CN111060564B - Device and method for detecting purity of gold brick through resistivity - Google Patents
Device and method for detecting purity of gold brick through resistivity Download PDFInfo
- Publication number
- CN111060564B CN111060564B CN201911027245.2A CN201911027245A CN111060564B CN 111060564 B CN111060564 B CN 111060564B CN 201911027245 A CN201911027245 A CN 201911027245A CN 111060564 B CN111060564 B CN 111060564B
- Authority
- CN
- China
- Prior art keywords
- sample
- gold
- terminal
- electrode probe
- binding post
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/041—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
- G01N9/36—Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture
Landscapes
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention provides a device and a method for detecting the purity of a gold brick through resistivity, wherein a sample base fixer and a test frame bracket are arranged on a test frame base; a sample top cover fixer is vertically arranged downwards in the middle of the top hack lever; the sample insulating top cover is fixed by the sample top cover fixer, the sample insulating fixture box is fixed on the sample base, the sample base is fixed on the sample base fixer, two opposite sides on the sample insulating fixture box are an anode probe and a cathode probe, the digital display screen is connected with the A/D converter, the positive and negative wiring terminals of the A/D converter are connected with the positive and negative terminals of the voltage wiring terminal, and the positive and negative terminals of the constant current source are connected with the positive and negative terminals of the current wiring terminal. The invention adopts the method for detecting the resistivity, can effectively identify the condition of fake doped tungsten in the gold bricks, and realizes the rapid nondestructive detection of the purity of the batch of gold bricks.
Description
Technical Field
The invention relates to the field of gold brick purity detection, in particular to a device and a method for detecting gold brick purity through resistivity.
Background
Gold market is frequently traded, and gold bricks are used as common gold storage and trading carriers, and gold brick counterfeiting can endanger gold trading safety, and cause huge losses to countries, banks and consumers. Therefore, the detection of the purity of the gold brick is very important.
At present, the national standards for detecting the purity of the gold bricks are mainly divided into a water hanging method (density method), a chemical method and an X-ray spectrum detection method, wherein the water hanging method mainly adopts a density detection method to detect the purity of the gold bricks, but cannot identify a fake making method of doping tungsten metal inside the gold bricks. The chemical method adopts a chemical analysis method, so that the purity of gold can be effectively detected, but the chemical method can cause irreversible and thorough damage to the gold bricks, so that all the gold bricks cannot be detected, and a space is reserved for the fake making of the gold bricks; the purity of the gold brick can be detected rapidly without damage by an X-ray spectrometry, but the defect is that the precision is not high, and X-rays only penetrate the gold brick to a depth of about 1cm, so that the fake making method of doping other substances in the gold brick cannot be identified; the densities of gold, tungsten and iridium are similar, and the tungsten seepage method is mostly adopted for manufacturing the fake gold bricks, so that the water hanging method cannot be used for distinguishing. However, the resistivity difference of the three materials is large, and the three materials can be effectively distinguished by measuring the resistivity, so that the device and the method for detecting the purity of the gold bricks by the resistivity are provided, and the rapid nondestructive detection of the purity of a large number of gold bricks can be realized by combining a density method.
Disclosure of Invention
In view of the above, the present invention aims to: the device and the method for detecting the purity of the gold brick through the resistivity can effectively solve the defects that the conventional method for detecting the purity of the gold brick cannot identify the defect that the doped tungsten is falsified, the chemical method cannot realize rapid nondestructive detection and the X-ray spectrometry cannot detect the inside of the gold brick.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the device for detecting the purity of the gold brick through resistivity is provided, and the structure is as follows: a sample base fixer (2) and a test frame bracket (4) are arranged on the test frame base (1); a sample top cover fixer (3) is vertically arranged downwards in the middle of the top hack lever; the sample insulating top cover (5) can be fixed by the sample top cover fixing device (3), and the height is adjusted up and down along with the adjustment of the sample top cover fixing device (3); the sample insulation clamp (7) can be fixed on the sample base (6), the sample base (6) is fixed on the sample base fixer (2), and the height can be adjusted up and down along with the adjustment of the sample base fixer (2); the two opposite sides of the sample insulation clamp (7) are provided with a positive electrode probe (9) and a negative electrode probe (8);
the digital display screen (12) is connected with the A/D converter (14), positive and negative wiring terminals of the A/D converter (14) are connected with positive and negative wiring terminals of the voltage wiring terminal (15), and voltage values measured on the voltage wiring terminal (15) are displayed on the digital display screen (12) through analog-to-digital conversion of the A/D converter (14); the positive and negative terminals of the constant current source (13) are connected with the positive and negative terminals of the current terminal (16), and the constant current source (13) outputs adjustable constant current.
The positive electrode probe (9) and the negative electrode probe (8) are respectively provided with a group of wiring terminals, the positive electrode probe wiring terminal (11) is provided with an A+ terminal and a V+ terminal, the negative electrode probe wiring terminal (10) is provided with an A-terminal and a V-terminal, and the negative electrode probe wiring terminal (10) is connected with the back of the metal electrode plane of the positive electrode probe wiring terminal (11).
The V+ binding post of the voltage binding post (15) is connected with the V+ terminal of the positive electrode probe binding post (11), and the V-binding post is connected with the V-terminal of the negative electrode probe binding post (10); the A+ binding post of the current binding post (16) is connected with the A+ terminal of the positive electrode probe binding post (11), and the A-binding post is connected with the A-terminal on the negative electrode probe binding post (10).
The sample insulation top cover (5) and the sample insulation clamp (7) are made of insulation material polyurethane, and have good insulativity and workability, and the sample insulation top cover (5) and the sample insulation clamp (7) form a box-shaped space.
The positive electrode probe (9) and the negative electrode probe (8) are electrode planes made of the same metal, the outer ring is fixed by polyurethane, and the positive electrode probe and the negative electrode probe are combined with the sample insulation clamp (7); the positive electrode probe and the negative electrode probe are the only parts which can conduct electricity; positive and negative terminals A+, A-, V+ and V-on the positive electrode probe and the negative electrode probe are directly connected with the back of the metal electrode plane; the sample insulating top cover, the sample insulating clamp and the completely closed box-shaped space comprising the positive electrode probe and the negative electrode probe can only contact the part of the metal electrode plane and each insulating part.
The method for detecting the purity of the gold bricks by resistivity is realized based on the device for detecting the purity of the gold bricks by resistivity, and specifically comprises the following steps:
(1) The vertical height of a sample base fixer is adjusted under the condition of constant temperature and constant humidity, and a sample insulating clamp is fixed on a sample base which is fixed on the sample base fixer; putting a gold brick in the sample insulating clamp at a time, and taking the vertical height as a limit; filling gold sand with the purity the same as the calibration value of the gold brick in the rest space in the box, and filling the sample insulation clamp; the sample insulation top cover is arranged on the insulation top cover fixer, the vertical height of the insulation top cover fixer is adjusted to enable the sample insulation top cover to be clung to the top of the sample insulation clamp, so that the sample insulation top cover, the sample insulation clamp and a closed space are assembled, and besides the gold bricks, the inside of the sample insulation top cover is filled with gold sand with the same calibration purity as the gold bricks;
(2) The A+ and A-binding posts on the current binding post are respectively connected with an A+ terminal on the positive electrode probe and an A-terminal on the negative electrode probe; the V+ and V-binding posts on the voltage binding post are respectively connected with a V+ terminal on the positive electrode probe and a V-terminal on the negative electrode probe; starting a constant current source, and regulating the value of an output current to be equal to the ratio of the cross section area S of the metal electrode of the positive electrode probe and the metal electrode of the negative electrode probe to the horizontal length L of the sample insulation clamp; the constant current generated by the constant current source flows into an A+ terminal of the positive electrode probe from an A+ terminal of the current terminal, passes through a mixture of a gold brick and a gold sand in the sample insulation clamp, flows out of an A-terminal of the negative electrode probe, is finally connected into an A-terminal of the current terminal, and returns to the negative electrode of the constant current source; the voltage value of the gold brick and gold sand mixture is respectively connected with a V+ terminal and a V-terminal of a voltage terminal through a V+ terminal of a positive electrode probe and a V-terminal of a negative electrode probe, flows into an A/D converter, converts the analog quantity of the voltage value into the digital quantity, and inputs the digital quantity into a digital display screen, and the displayed voltage value is digitally equal to the resistivity value of the gold brick and gold sand mixture;
(3) Adjusting the vertical height of the sample top cover fixer upwards, taking out the gold bricks in the box-shaped space, replacing the next batch of gold bricks, and detecting again as shown in the previous step; after all the gold bricks are detected, comparing the measured resistivity with the theoretical resistivity of the calibrated purity gold, wherein the purity can be considered to be in accordance with calibration when the error is smaller than a certain degree; under the condition that the resistivities of all the gold bricks have no obvious difference, the resistivities of the same batch of gold bricks can be considered to be the same, and the condition that metals doped with tungsten, bismuth and iridium are fake does not exist; optionally selecting a gold brick, and detecting whether the possibility of fake products of doping other metals with similar resistivity in the gold brick by using a density method; and (3) comprehensively detecting the purity of a large number of gold bricks in a full-coverage nondestructive mode by combining the resistivity test result and the density method test result.
Compared with the existing gold brick purity detection method, the method has the beneficial effects that the condition of fake doped tungsten in the gold bricks can be effectively identified by adopting the method for detecting the resistivity, and the rapid nondestructive detection can be carried out on all batch of gold bricks, so that the problem that the three methods of effectively identifying fake doped tungsten metal, nondestructive detection and rapid and non-missing detection of batch of gold bricks cannot be simultaneously used in the existing gold brick purity detection method can be solved, and the rapid and non-missing nondestructive detection of batch of gold bricks can be realized.
Drawings
FIG. 1 is a schematic diagram of a device for detecting purity of a gold brick by resistivity;
FIG. 2 is a schematic diagram of the electrical structure connection of a device for detecting the purity of a gold brick by resistivity;
in the figure: 1. a test rack base; 2. a sample insulating base holder; 3. a sample insulating top cover holder; 4. a test rack bracket; 5. a sample insulating top cover; 6. a sample base; 7. a sample insulation jig; 8. a negative electrode probe; 9. a positive electrode probe; 10. a negative electrode probe wiring terminal; 11. a positive electrode probe wiring terminal; 12. a digital display screen; 13. a constant current source; 14. an A/D converter; 15. a voltage terminal; 16. and a current binding post.
Description of the embodiments
The present application will be described by way of examples, and as shown in fig. 1, the present invention provides an apparatus for detecting purity of a gold brick by resistivity, which has the structure as follows: a sample base fixer (2) and a test frame bracket (4) are arranged on the test frame base (1); a sample top cover fixer (3) is vertically arranged downwards in the middle of the top hack lever; the sample insulating top cover (5) can be fixed by the sample top cover fixing device (3), and the height is adjusted up and down along with the adjustment of the sample top cover fixing device (3); the sample insulation clamp (7) can be fixed on the sample base (6), the sample base (6) is fixed on the sample base fixer (2), and the height can be adjusted up and down along with the adjustment of the sample base fixer (2); the two opposite sides of the sample insulation clamp (7) are provided with a positive electrode probe (9) and a negative electrode probe (8); the positive electrode probe (9) and the negative electrode probe (8) are respectively provided with a group of wiring terminals, the positive electrode probe wiring terminal (11) is provided with an A+ terminal and a V+ terminal, the negative electrode probe wiring terminal (10) is provided with an A-terminal and a V-terminal, and the negative electrode probe wiring terminal (10) is connected with the back of the metal electrode plane of the positive electrode probe wiring terminal (11).
As shown in fig. 2, the digital display screen (12) is connected with the a/D converter (14), positive and negative wiring terminals of the a/D converter (14) are connected with positive and negative wiring terminals of the voltage wiring terminal (15), and the voltage value measured on the voltage wiring terminal (15) is displayed on the digital display screen (12) through analog-to-digital conversion of the a/D converter (14); the positive and negative terminals of the constant current source (13) are connected with the positive and negative terminals of the current terminal (16), and the constant current source (13) outputs adjustable constant current. The V+ binding post of the voltage binding post (15) is connected with the V+ terminal on the positive electrode probe (9), and the V-binding post is connected with the V-terminal on the negative electrode probe (8); the A+ binding post of the current binding post (16) is connected with the A+ terminal on the positive electrode probe (9), and the A-binding post is connected with the A-terminal on the negative electrode probe (8).
The vertical height of the sample base fixer (2) is adjusted under the condition of constant temperature and constant humidity, the sample insulating clamp (7) is fixed on the sample base (6), and the sample base (6) is fixed on the sample base fixer (2); putting a gold brick into the sample insulating clamp (7) at a time, and taking the vertical height as a limit; filling gold sand with the purity the same as the calibration value of the gold bricks in the rest space in the box-shaped space, and filling a sample insulation clamp (7); the sample insulation top cover (5) is arranged on the insulation top cover fixer (3), and the vertical height of the insulation top cover fixer (3) is adjusted to enable the sample insulation top cover (5) to be clung to the top of the sample insulation clamp (7), so that the sample insulation top cover (5), the sample insulation clamp (7) and a box-shaped space are assembled, and besides the gold bricks, the inside is filled with gold sand with the same calibration purity as the gold bricks.
The method comprises the steps that A+ and A-binding posts on a current binding post (16) are respectively connected with an A+ terminal of a positive electrode probe binding post (11) and an A-terminal of a negative electrode probe binding post (10), and V+ and V-binding posts on a voltage binding post (15) are respectively connected with a V+ terminal of the positive electrode probe binding post (11) and a V-terminal of the negative electrode probe binding post (10); starting a constant current source (13), and adjusting the output current value to be equal to the ratio of the cross section area S of the metal electrode of the positive electrode probe (9) and the negative electrode probe (8) to the horizontal length L of the sample insulation clamp (6); the constant current generated by the constant current source (13) flows into the A+ terminal of the positive electrode probe binding terminal (11) from the A+ terminal of the current binding terminal (16), passes through the mixture of the gold brick and the gold sand in the sample insulation clamp (7), flows out of the A-terminal of the negative electrode probe binding terminal (10), is finally connected into the A-terminal of the current binding terminal (16), and returns to the negative electrode of the constant current source (13).
The voltage value of the gold brick and gold sand mixture is respectively connected with a V+ binding post and a V-binding post of a voltage binding post (15) through a V+ terminal of a positive electrode probe binding post (11) and a V-terminal of a negative electrode probe binding post (10), flows into an A/D converter (14) to convert the analog quantity of the voltage value into the digital quantity, and is input into a digital display screen (12), and the displayed voltage value is digitally equal to the resistivity value of the gold brick and gold sand mixture; and (3) adjusting the vertical height of the sample top cover fixer (3) upwards, taking out the gold bricks in the box-shaped space, replacing the next batch of gold bricks, and detecting again as shown in the previous step.
After all the gold bricks are detected, comparing the measured resistivity with the theoretical resistivity of the calibrated purity gold, wherein the purity can be considered to be in accordance with calibration when the error is smaller than a certain degree; under the condition that the resistivities of all the gold bricks have no obvious difference, the resistivities of the same batch of gold bricks can be considered to be the same, and the condition that metals doped with tungsten, bismuth and iridium are fake does not exist; optionally selecting a gold brick, and detecting whether the possibility of fake products of doping other metals with similar resistivity in the gold brick by using a density method; and (3) comprehensively detecting the purity of a large number of gold bricks in a full-coverage nondestructive mode by combining the resistivity test result and the density method test result.
In specific implementation, the constant current value output by the constant current source (13) is equal to the ratio S/L of the sectional area S of the metal electrode of the positive electrode probe (9) and the negative electrode probe (8) in the sample insulation clamp (7) to the horizontal length L of the sample insulation clamp (7), and can be deduced according to the theoretical formula ρ=u·s/IL of resistivity and i=u/R: ρ=r·s/L, so that when the constant current source output current value is S/L, the voltage value displayed by the digital display screen is numerically equal to the resistivity ρ of the gold-brick gold-sand mixture to be measured.
The vertical height of the sample top cover fixer (3) is adjusted upwards, the gold bricks in the box-shaped space are taken out, the next batch of gold bricks are replaced, and as shown in the previous step, the detection is carried out again; after all the gold bricks are detected, comparing the measured resistivity with the theoretical resistivity of the calibrated purity gold, wherein the purity can be considered to be in accordance with calibration when the error is smaller than a certain degree; under the condition that the resistivities of all the gold bricks have no obvious difference, the resistivities of the same batch of gold bricks can be considered to be the same; optionally selecting a gold brick, and detecting whether the possibility of fake products of doping other metals with similar resistivity in the gold brick by using a density method; and (3) comprehensively detecting the purity of a large number of gold bricks in a full-coverage nondestructive mode by combining the resistivity test result and the density method test result.
Claims (1)
1. A detection method for detecting purity of gold bricks through resistivity is characterized by comprising the following steps: based on an apparatus for detecting purity of gold bricks by resistivity, a sample base holder (2) and a test rack bracket (4) are mounted on a test rack base (1) of the apparatus; a sample top cover fixer (3) is vertically arranged downwards in the middle of the top hack lever; the sample insulating top cover (5) is fixed by the sample top cover fixing device (3), and the height is adjusted up and down along with the adjustment of the sample top cover fixing device (3); the sample insulation clamp (7) is fixed on the sample base (6), the sample base (6) is fixed on the sample base fixer (2), and the height is adjusted up and down along with the adjustment of the sample base fixer (2); the two opposite sides of the sample insulation clamp (7) are provided with a positive electrode probe (9) and a negative electrode probe (8); the peripheries of the metal electrode planes used by the positive electrode probe (9) and the negative electrode probe (8) are wrapped by polyurethane and combined with a sample insulation clamp (7); the sample insulation top cover (5) and the sample insulation clamp (7) form a box-shaped space;
the positive electrode probe (9) and the negative electrode probe (8) are respectively provided with a group of wiring terminals, the positive electrode probe wiring terminal (11) is provided with an A+ terminal and a V+ terminal, the negative electrode probe wiring terminal (10) is provided with an A-terminal and a V-terminal, and the negative electrode probe wiring terminal (10) is connected with the back of the metal electrode plane of the positive electrode probe wiring terminal (11); the voltage binding post (15) is provided with a V+ binding post and a V-binding post; the current terminal (16) has an A+ terminal and an A-terminal;
the device also comprises a digital display screen (12) connected with the A/D converter (14), positive and negative wiring terminals of the A/D converter (14) are connected with positive and negative wiring terminals of the voltage wiring terminal (15), and voltage values measured on the voltage wiring terminal (15) are displayed on the digital display screen (12) through analog-to-digital conversion of the A/D converter (14); the positive and negative terminals of the constant current source (13) are connected with the positive and negative terminals of the current terminal (16), and the constant current source (13) outputs adjustable constant current;
the detection method for detecting the purity of the gold brick through resistivity is realized by adopting the following steps:
the vertical height of the sample base fixer (2) is adjusted under the condition of constant temperature and constant humidity, the sample insulating clamp (7) is fixed on the sample base (6), and the sample base (6) is fixed on the sample base fixer (2); putting a gold brick into the sample insulating clamp (7) at a time, and taking the vertical height as a limit; filling gold sand with the purity the same as the calibration value of the gold brick in the rest space in the box, and filling a sample insulation clamp (7); the sample insulation top cover (5) is arranged on the sample top cover fixer (3), and the vertical height of the sample top cover fixer (3) is adjusted to enable the sample insulation top cover (5) to be closely attached to the top of the sample insulation clamp (7), so that a box-shaped space is formed by the sample insulation top cover (5) and the sample insulation clamp (7), and gold sand is filled in the box-shaped space except for gold bricks; the purity of the gold sand is the same as the calibration value of the gold bricks, and the box-shaped space formed by the sample insulation top cover (5) and the sample insulation clamp (7) is filled;
the method comprises the steps that A+ and A-binding posts on a current binding post (16) are respectively connected with an A+ terminal of a positive electrode probe binding post (11) on a positive electrode probe (9) and an A-terminal of a negative electrode probe binding post (10) on a negative electrode probe (8), and V+ and V-binding posts on a voltage binding post (15) are respectively connected with a V+ terminal of a positive electrode probe binding post (11) on the positive electrode probe (9) and a V-terminal of a negative electrode probe binding post (10) on the negative electrode probe (8); starting a constant current source (13), and adjusting the output current value to be equal to the ratio of the cross section area S of the metal electrode of the positive electrode probe and the metal electrode of the negative electrode probe in the sample insulation clamp (7) to the horizontal length L of the sample insulation clamp (7); the voltage value displayed by the digital display screen is equal to the resistivity of the gold-sand mixture of the gold brick to be tested in value;
the constant current generated by the constant current source (13) flows into the A+ terminal of the positive electrode probe binding terminal (11) of the positive electrode probe (9) from the A+ terminal of the current binding terminal (16), passes through the mixture of the gold brick and the gold sand in the sample insulation clamp (7), flows out of the A-terminal of the negative electrode probe binding terminal (10) of the negative electrode probe (8), finally is connected into the A-binding terminal of the current binding terminal (16), and returns to the negative electrode of the constant current source (13); the voltage value of the gold brick and gold sand mixture is connected with a V+ binding post and a V-binding post of a voltage binding post (15) respectively through a V+ binding post of a positive electrode probe binding post (11) of a positive electrode probe (9) and a V-binding post of a negative electrode probe binding post (10) of a negative electrode probe (8), and flows into an A/D converter (14) to convert the analog value of the voltage value into the digital value, and the digital value is input into a digital display screen (12), wherein the displayed voltage value is equal to the resistivity value of the gold brick and gold sand mixture in number;
3) The vertical height of the sample top cover fixer (3) is adjusted upwards, the gold bricks in the box-shaped space are taken out, the next batch of gold bricks are replaced, and as shown in the previous step, the detection is carried out again; after all the gold bricks are detected, comparing the measured resistivity with the theoretical resistivity of the calibrated purity gold; under the condition that the resistivities of all the gold bricks have no obvious difference, the resistivities of the same batch of gold bricks can be considered to be the same, and the condition that metals doped with tungsten, bismuth and iridium are fake does not exist; optionally selecting a gold brick, and detecting whether the possibility of fake products of doping other metals with similar resistivity in the gold brick by using a density method; and (3) comprehensively detecting the purity of a large number of gold bricks in a full-coverage nondestructive mode by combining the resistivity test result and the density method test result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911027245.2A CN111060564B (en) | 2019-10-27 | 2019-10-27 | Device and method for detecting purity of gold brick through resistivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911027245.2A CN111060564B (en) | 2019-10-27 | 2019-10-27 | Device and method for detecting purity of gold brick through resistivity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111060564A CN111060564A (en) | 2020-04-24 |
| CN111060564B true CN111060564B (en) | 2023-05-09 |
Family
ID=70297669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911027245.2A Active CN111060564B (en) | 2019-10-27 | 2019-10-27 | Device and method for detecting purity of gold brick through resistivity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111060564B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58202866A (en) * | 1982-05-21 | 1983-11-26 | Tanaka Kikinzoku Kogyo Kk | Judging method of gold ingot |
| EP0672257A1 (en) * | 1992-12-07 | 1995-09-20 | VISCOR, Petr | Method and apparatus for determining characteristic electrical properties of semi-conducting materials |
| CN101038265A (en) * | 2007-04-23 | 2007-09-19 | 华中科技大学 | Device for measuring Seebeck coefficient and resistivity of semi-conductor film material |
| KR20100010795A (en) * | 2008-07-23 | 2010-02-02 | 주식회사 실트론 | Manufacturing method of resistivity standard sample of epitaxial wafer and revision method of resistivity measuring device used the resistivity standard sample manufactured by the method |
| CN108344774A (en) * | 2017-01-22 | 2018-07-31 | 清远先导材料有限公司 | The impurity concentration detection method of ultra-pure germanium stick or ingot |
| CN110187184A (en) * | 2019-06-25 | 2019-08-30 | 上海大学 | A kind of resistivity measuring instrument |
-
2019
- 2019-10-27 CN CN201911027245.2A patent/CN111060564B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58202866A (en) * | 1982-05-21 | 1983-11-26 | Tanaka Kikinzoku Kogyo Kk | Judging method of gold ingot |
| EP0672257A1 (en) * | 1992-12-07 | 1995-09-20 | VISCOR, Petr | Method and apparatus for determining characteristic electrical properties of semi-conducting materials |
| CN101038265A (en) * | 2007-04-23 | 2007-09-19 | 华中科技大学 | Device for measuring Seebeck coefficient and resistivity of semi-conductor film material |
| KR20100010795A (en) * | 2008-07-23 | 2010-02-02 | 주식회사 실트론 | Manufacturing method of resistivity standard sample of epitaxial wafer and revision method of resistivity measuring device used the resistivity standard sample manufactured by the method |
| CN108344774A (en) * | 2017-01-22 | 2018-07-31 | 清远先导材料有限公司 | The impurity concentration detection method of ultra-pure germanium stick or ingot |
| CN110187184A (en) * | 2019-06-25 | 2019-08-30 | 上海大学 | A kind of resistivity measuring instrument |
Non-Patent Citations (1)
| Title |
|---|
| 电阻率自动测定仪在金砖纯度检测中的应用研究;王磊;《中国计量》;20180710(第07期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111060564A (en) | 2020-04-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101328994B1 (en) | Volume Electrical Resistivity Equipment for Cable in NPPs | |
| US5661403A (en) | Apparatus and method for testing a solid electrolyte | |
| CN109030952B (en) | Mandrel volume resistivity measuring equipment for insulator | |
| CN110873823A (en) | Resistivity testing method for semiconductor material | |
| CN111060563B (en) | Device and method for identifying doping of gold bricks through resistivity | |
| CN105486927A (en) | Measurement method for volume resistivity of solid insulating material | |
| CN111060564B (en) | Device and method for detecting purity of gold brick through resistivity | |
| EP1817601A4 (en) | Method and apparatus for measuring hydrogen concentration in zirconium alloy components in the fuel pool of a nuclear power plant | |
| CN202939222U (en) | Cable conductor direct-current resistance test device | |
| CN111913042A (en) | Axial resistivity testing device and method for cable buffer layer | |
| CN104678181B (en) | Rail resistance rate measuring method | |
| CN106771623A (en) | The test device of insulating materials resistance and resistivity under a kind of hot environment | |
| CN105158570A (en) | Simple method for testing electrical conductivity of solid electrolyte | |
| KR20170116539A (en) | Vertical resistance measurement device of lithium-sulfur battery and method for evaluating cathode of lithium-sulfur battery using the same | |
| CN206515426U (en) | Material dielectric parameter testing electrode device | |
| CN207851253U (en) | A kind of motor automated production detection device | |
| CN205103317U (en) | Measurement device for solid insulating material volume resistivity | |
| CN110988480A (en) | Device and method for measuring conductivity of proton exchange membrane in thickness direction | |
| Engin et al. | A high temperature cell for simultaneous electrical resistance and neutron diffraction measurements | |
| CN213275763U (en) | Device for measuring conductivity of proton conducting membrane in thickness direction | |
| CN206442353U (en) | Crystal silicon solar batteries built-in testing device | |
| CN110285857A (en) | A kind of fuel cell detection device | |
| CN201555890U (en) | Anode current distribution measuring instrument of movable type aluminium electrolysis bath | |
| CN109781808A (en) | The device and method of electrochemical impedance spectral technology measurement rock-soil material water salt content | |
| CN214539798U (en) | Detection apparatus for cable insulation resistance value |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |