CN109761579B

CN109761579B - High-refraction high-density colour artificial gem

Info

Publication number: CN109761579B
Application number: CN201910232959.0A
Authority: CN
Inventors: 刘峰; 龙素琼; 尹跃
Original assignee: Chengdu Qicai Jewelry Co ltd
Current assignee: Chengdu Qicai Jewelry Co ltd
Priority date: 2019-03-26
Filing date: 2019-03-26
Publication date: 2022-01-04
Anticipated expiration: 2039-03-26
Also published as: CN109761579A

Abstract

The invention disclosesA refractive, high-density, colored artificial gemstone, the artificial gemstone comprising: BaO: 16% -30%; la₂O₃：15％～55％；SiO₂：5％～25％；B₂O₃: 5% -18%; auxiliary materials: 0 to 12 percent. The invention is beneficial to synthesizing the best lanthanum oxide and barium oxide eutectic body phase by improving the formula, so that the product has excellent characteristics of high refractive index, high density, high toughness and the like, and the whole color of the gem is bright and uniform.

Description

High-refraction high-density colour artificial gem

Technical Field

The invention relates to the technical field of ornaments, in particular to a high-refraction high-density colored artificial gem.

Background

The natural gems are always loved genius by human beings, with the improvement of human material civilization, the living standard is generally improved, and the demand on the natural gems is more and more, but the natural gems are rare in yield and high in price and cannot meet the popular demand.

Synthetic gemstones (referred to as artificial gemstones for short) are created and developed to alleviate the contradiction between supply and demand of natural gemstones, as compared to natural gemstones, and are artificially produced, not naturally produced gemstones. According to the relevant regulations, an artificial gemstone is defined as: materials that are produced or manufactured entirely or partially by hand for use as jewelry and decorations are collectively referred to as artificial gems. The popular understanding is that: the artificial gem is a material which is manufactured in a laboratory or a factory by using the basic principle and the method of modern science and technology and selecting proper raw materials through reasonable process and technical flow. Although the price of the existing artificial synthetic gemstones is lower than that of natural gemstones, compared with the natural gemstones, the performance indexes of the existing artificial synthetic gemstones reflecting the characteristics of the gemstones are poorer, and the existing artificial synthetic gemstones cannot meet the higher requirements of people on ornaments.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: although the price of the existing artificial synthetic gemstones is lower than that of natural gemstones, compared with the natural gemstones, the performance indexes of the existing artificial synthetic gemstones reflecting the characteristics of the gemstones are poorer, and the existing artificial synthetic gemstones cannot meet the higher requirements of people on ornaments.

The invention is realized by the following technical scheme:

a high-refraction high-density color artificial gem, the artificial gem comprises the following components:

BaO：16％～30％；

La₂O₃：15％～55％；

SiO₂：5％～25％；

B₂O₃：5％～18％；

auxiliary materials: 0 to 12 percent. The artificial synthetic gem provided by the invention is a eutectic structure of the oxides.

Further, the artificial gem comprises the following components:

BaO：19％～28％；

La₂O₃：24％～48％；

SiO₂：10％～23％；

B₂O₃：7％～16％；

auxiliary materials: 2-9%.

Further, the artificial gem comprises the following components:

BaO：25％；

La₂O₃：39％；

SiO₂：19％；

B₂O₃：12％；

auxiliary materials: 5 percent.

Further, the BaO and La₂O₃The molar mass ratio is 0.62-4.25.

Further, the auxiliary materials comprise a fluxing agent and a coloring agent.

Further, the colorant includes metal oxides of erbium, neodymium, copper, cobalt, gold, nickel, chromium.

The invention has the following advantages and beneficial effects:

1. the invention provides a colored artificial gem, barium oxide and lanthanum oxide can be melted to form a main phase of the gem, the main phase is a high molecular weight oxide, and the density of the gem can be ensured to be closer to that of a natural gem; the invention is beneficial to synthesizing the best lanthanum oxide and barium oxide eutectic phase by improving the formula, so that the product has excellent characteristics of high refractive index, high density, high toughness and the like, and the whole color of the gem is bright and uniform;

2. the invention provides a colored artificial gem, boron trioxide and silicon dioxide in the gem form a secondary phase, the silicon dioxide has stabilizing effect on a main phase, such as crystallization inhibition, melt viscosity improvement, easy forming, and excellent eutectic property and coloring effect with a coloring agent;

3. the invention provides a colored artificial gem, which is obtained by improving a formula, thereby being beneficial to further improving the refractive index and the density and reducing the energy consumption and the cost; this is because the erosion of the container is increased during the high-temperature melting process, which results in the generation of impurities such as stones and bubbles, and affects the performance of the stones.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not used as limitations of the present invention.

Example 1

The embodiment provides a high-refraction high-density color artificial gem, which comprises the following components in percentage by weight:

BaO：30％；

La₂O₃：15％；

SiO₂：25％；

B₂O₃：18％；

auxiliary materials: 12 percent.

The BaO and La₂O₃The molar mass ratio is 4.25; the auxiliary material is Cr₂O₃Colorant 9% to produce emerald gemstones; 1% of Na is adopted as fluxing agent₂O and 2% of K₂O。

The processing technological process of the artificial gem comprises the following steps: weighing raw materials, mixing the raw materials, adding auxiliary materials, melting, casting and molding, keeping the temperature to normal temperature, annealing, and cooling to normal temperature to finally obtain a finished product for processing; the melting temperature is 1300-1370 degrees; the raw materials are oxides, carbonates, nitrates and the like corresponding to each metal element.

Example 2

This example differs from example 1 in that: the artificial synthetic gem comprises the following components:

BaO：16％；

La₂O₃：55％；

SiO₂：18％；

B₂O₃：11％；

the BaO and La₂O₃The molar mass ratio was 0.62.

Example 3

BaO：28％；

La₂O₃：24％；

SiO₂：23％；

B₂O₃：16％；

auxiliary materials: 9 percent.

The BaO and La₂O₃The molar mass ratio was 2.48.

Example 4

BaO：19％；

La₂O₃：48％；

SiO₂：16％；

B₂O₃：11％；

auxiliary materials: 6 percent.

The BaO and La₂O₃The molar mass ratio was 0.84.

Example 5

BaO：25％；

La₂O₃：39％；

SiO₂：19％；

B₂O₃：12％；

auxiliary materials: 5 percent.

The BaO and La₂O₃The molar mass ratio was 1.36.

Comparative example 1

This comparative example differs from example 5 in that:

BaO：49％；

La₂O₃：15％；

SiO₂：19％；

B₂O₃：12％；

auxiliary materials: 5 percent.

The BaO and La₂O₃The molar mass ratio was 6.9.

Comparative example 2

This comparative example differs from example 5 in that:

BaO：10％；

La₂O₃：54％；

SiO₂：19％；

B₂O₃：12％；

auxiliary materials: 5 percent.

The BaO and La₂O₃The molar mass ratio was 0.39.

Comparative example 3

This comparative example differs from example 5 in that:

CaO：25％；

CeO₂：39％；

SiO₂：19％；

B₂O₃：12％；

auxiliary materials: 5 percent.

The CaO and CeO₂The molar mass ratio was 3.0.

Comparative example 4

This comparative example differs from example 5 in that:

BaO：16％；

La₂O₃：23％；

SiO₂：26％；

B₂O₃：21％；

auxiliary materials: 14 percent.

The BaO and La₂O₃The molar mass ratio was 1.48.

And (3) performance testing:

test method

1. The refractive index detection method comprises the following steps:

the detection is carried out according to the method specified in the national standard GB/T7962 of the people's republic of China.

2. The density detection method comprises the following steps:

Second, test results

The results of the refractive index, density and dispersion measurements on the samples prepared in each of comparative examples 1 to 4 of examples 1 to 5 are shown in Table 1,

table 1, results of performance tests on samples prepared in each of examples 1 to 5 in each of comparative examples 1 to 4

Sample (I)	Refractive index	Density (g/cm)³)
			Example 1	1.72	3.80
Example 2	1.75	3.84
			Example 3	1.81	3.86
Example 4	1.86	3.90
			Example 5	1.90	3.93
Comparative example 1	1.61	3.72
			Comparative example 2	1.63	3.74
Comparative example 3	1.54	3.65
			Comparative example 4	1.66	3.78

In summary, the artificially synthesized gems provided by the invention through improving the formula have the following advantages:

1. the gem is observed by a magnifying glass with the magnification of more than 10 times, and has no cotton-shaped, reticular or tree-root-shaped inclusion, small crack and no bubble.

2. High refractive index:

the refractive index of the artificial gem provided by the invention is as high as 1.72-1.90, less free electrons exist in the gem provided by the invention, the influence of impurities, inclusion bodies and the like is avoided, the transparency is higher, the surface and the interior of the gem are uniform in brightness, and the luster is stronger.

3. The density is high:

the density of the artificial gem provided by the invention is as high as 3.80-3.93 g/cm³The larger the density of the gem is, the more the grinding processing operation is facilitated; the denser the inside of the gemstone, the smoother the surface of the finished polished gemstone, and the higher the degree of natural reflection, i.e., the brighter it is.

4. The toughness is high:

the artificial gem provided by the invention has higher toughness, better cutting and polishing performance and excellent processing performance; in the process of processing the carved or cambered surface, the unfavorable phenomena such as cracks are not easy to occur, and the processing difficulty is relatively reduced.

5. The color is bright and uniform:

the quality problems of the jewel provided by the application, such as impurities or structural defects, are also indirectly shown.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The high-refraction high-density color artificial gem is characterized by comprising the following components in percentage by mass:

BaO：16％～30％；

La₂O₃：15％～55％；

SiO₂：5％～25％；

B₂O₃：5％～18％；

auxiliary materials: 0 to 12 percent; the auxiliary materials are fluxing agent and colorant.

2. The high refractive, high density colored synthetic stone of claim 1 wherein said synthetic stone is comprised of:

BaO：19％～28％；

La₂O₃：24％～48％；

SiO₂：10％～23％；

B₂O₃：7％～16％；

auxiliary materials: 2-9%.

3. The high refractive, high density colored synthetic stone of claim 2 wherein said synthetic stone comprises the composition of:

BaO：25％；

La₂O₃：39％；

SiO₂：19％；

B₂O₃：12％；

auxiliary materials: 5 percent.

4. The high refractive, high density colored synthetic gemstone according to claim 1, wherein said BaO and La₂O₃The molar mass ratio is 0.62-4.25.

5. The high refractive, high density colored synthetic gemstone according to claim 1, wherein the coloring agent includes metal oxides of erbium, neodymium, copper, cobalt, gold, nickel, chromium.