CN107540375A - A kind of low-temperature high-strength devitrified glass and its diamond composite - Google Patents
A kind of low-temperature high-strength devitrified glass and its diamond composite Download PDFInfo
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- CN107540375A CN107540375A CN201710822277.6A CN201710822277A CN107540375A CN 107540375 A CN107540375 A CN 107540375A CN 201710822277 A CN201710822277 A CN 201710822277A CN 107540375 A CN107540375 A CN 107540375A
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- devitrified glass
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Abstract
The invention discloses a kind of low-temperature high-strength devitrified glass and its diamond composite, bonding agent based on raw material components and its mass ratio:Diamond particles:The ﹕ 5 of binding agent=15 ﹕ 80；The raw material components and its mass percentage content of bonding agent are：SiO235~60wt%, B2O310~15wt%, Na23~8wt% of O, Li25~15wt% of O, Al2O35~12wt%, ZnO5~17wt%, TiO2With ZrO2(mol ratio 2:1) 3~5wt%, on this basis additional WO32~10wt%.Bonding agent is stoichiometrically first prepared, then raw material is mixed, dry pressing is base substrate, then base substrate is made into low-temperature high-strength devitrified glass and its diamond composite in 800 DEG C of sintering.The invention provides a kind of cost is cheap, technique is simple, devitrified glass and its diamond composite of high comprehensive performance, its refractoriness is 641 DEG C, mobility 283%, intensity 76.94MPa.
Description
Technical field
The invention belongs to a kind of ceramic composition characterized by composition, more particularly to a kind of high-strength devitrified glass diamond
Based composite ceramic material.
Background technology
Diamond has high hardness and fusing point, and thermal capacitance is small, low thermal expansion, and thermal conductivity is high, be a kind of performance extremely
Excellent superhard material, but due to when diamond is burnt till diffusion coefficient it is relatively low, production application can not be made in single diamond
Needed for diamond composition.Therefore, in the industrial production, typically diamond is combined by bonding agent, to prepare
All kinds of diamond composites of practical application can be put into.Devitrified glass and its diamond composite are in each field of industry
It is respectively provided with and is widely applied.
The extensive use of diamond abrasive tool, higher requirement is proposed to the intensity of diamond based composite ceramic material.Such as
Where other performances it is unaffected in the case of, preferably improve the focus always studied both at home and abroad of intensity of composite.
Add rare earth oxide or progress fritting processing is although feasible but cost is higher.The additive types of addition are more, although can
Intensity can be improved, but the reaction between raw material is not easy to hold, and high temperature sintering influences the combination property of material.
The content of the invention
The purpose of the present invention, it is on the basis of existing technology, in the case where not influenceing other performances, further to improve
The intensity and combination property of diamond based composites, the present invention without carry out fritting processing also without addition costly metal or
Oxide, but select the operating procedure of simple possible and raw material cheap and easy to get that the of a relatively high Buddha's warrior attendant ground mass pottery of intensity is made
Porcelain composite.The devitrified glass and its Buddha's warrior attendant that a kind of cost is cheap, technique is simple, high comprehensive performance, intensity are higher are provided
Stone composite material.
The present invention is achieved by following technology.
A kind of low-temperature high-strength devitrified glass and its diamond composite, combine based on raw material components and its mass ratio
Agent:Diamond particles:The ﹕ 5 of binding agent=15 ﹕ 80；The raw material components and its mass percentage content of basic bonding agent are：SiO2
35~60wt%, B2O310~15wt%, Na23~8wt% of O, Li25~15wt% of O, Al2O35~12wt%, ZnO 5~
17wt%, TiO2+ZrO2For 3~5wt%, the TiO2+ZrO2Mol ratio 2:1；Additional WO on this basis32~
10wt%；
The preparation method of above-mentioned low-temperature high-strength devitrified glass and its diamond composite, there are following steps：
(1) raw material components and its mass percentage content of basic bonding agent are pressed：SiO235~60wt%, B2O310~
15wt%, Na2O3~8wt%, Li25~15wt% of O, Al2O35~12wt%, ZnO 5~17wt%, TiO2+ZrO2For 3~
5wt%, carry out dispensing, the TiO2+ZrO2Mol ratio 2:1；It is put into ball mill to dry grind 6 hours, sieving, obtains basic combination
Agent；
By 2~10wt% WO3Powder is applied in basic bonding agent powder；
(2) the basic bonding agent of step (1) is mixed with diamond particles, binding agent by the ﹕ 5 of 15 ﹕ 80 mass ratio, dry-pressing
Base substrate is configured to, the diamond particles granularity is 100~120 μm；
(3) base substrate of step (2) is sintered in high temperature sintering furnace in 800 DEG C, 100min is incubated when being cooled to 640 DEG C,
Room temperature is then cooled to, low-temperature high-strength devitrified glass and its diamond composite is made.
The step (1) is put into the ball of ball mill, material mass ratio is 2 ﹕ 1, and it is 100 mesh sieves to sieve.
The WO of the step (1)3Additional mass percent content be 4%.
The refractoriness of the basic bonding agent of the step (1) is 663 DEG C, mobility 259%, intensity 76.24MPa.
The binding agent of the step (2) is dextrin.
The base substrate of the step (2) is 30 millimeters × 6 millimeters × 4 millimeters of rectangular strip base substrate.
The temperature schedule of the step (3) is：Less than 400 DEG C heating rates are 3 DEG C/min, and 60min is incubated in 400 DEG C；
400 DEG C to 800 DEG C heating rates are 4 DEG C/min, and 110min is incubated in 800 DEG C；800 DEG C to 640 DEG C rate of temperature fall are 2 DEG C/
Min, 100min is incubated in 640 DEG C, is then cooled to room temperature.
The invention provides the Buddha's warrior attendant ground mass ceramics that a kind of cost is cheap, technique is simple, high comprehensive performance, intensity are higher
Composite.Work as WO in the composite3When addition is 4wt%, its refractoriness is 641 DEG C, mobility 283%, intensity
For 76.24MPa.
Brief description of the drawings
Fig. 1 is that embodiment 1 adds 4wt.%WO3ESEM microscopic appearance figure.
Embodiment
The raw materials used present invention is commercially available industrial chemicals, and invention is made further with reference to specific embodiment
It is bright.
Embodiment 1
(1) 6 grams of boric acid, 20 grams of silica, 5 grams of aluminum oxide, 2.5 grams of sodium carbonate, lithium carbonate 5 are weighed with electronic balance
Gram, 4 grams of zinc oxide, 1.13 grams of titanium dioxide, 0.86 gram of zirconium oxide, be put into ball grinder, be medium with alumina balls, according to original
Material：The mass ratio of alumina balls is 2:1, dry grind 6 hours, the powder after dry grinding is crossed into 100 mesh sieves, obtains basic Ceramic bond
Agent；
By WO3Powder is added in basic bonding agent powder, and outer dosage is 4wt.%；
(2) it is the ﹕ 5 of 15 ﹕ 80 according to the mass ratio of Jie He Ji ﹕ Jin hard rock Ke Li ﹕ binding agents, weighs bonding agent and diamond
Grain and binding agent mixed, the diamond particles granularity be 100~120 μm of binding agents be dextrin, then dry-pressing into
For base substrate；Base substrate size is 30mm × 6mm × 4mm, and briquetting pressure 150kN, the dwell time is 10 to 20s；
(3) it is in 800 DEG C of sintering, temperature schedule in high temperature sintering furnace by base substrate：Less than 400 DEG C heating rates are 3 DEG C/
Min, 60min is incubated in 400 DEG C；400 DEG C to 800 DEG C heating rates are 4 DEG C/min, and 110min is incubated in 800 DEG C；800 DEG C are arrived
640 DEG C of rate of temperature fall are 2 DEG C/min, are incubated 100min in 640 DEG C, are then cooled to room temperature, low-temperature high-strength crystallite is made
Glass and its diamond composite.
Weigh the bonding agent powder for taking 0.75g well prepared in advance in the balance, the dry-pressing formed cylinder for 8 × 8mm of diameter, into
Cylinder after shaping is positioned on clean smooth ceramic substrate, is put into sintering furnace in 55kN by Stress control during type,
Sintering schedule when being prepared by diamond composite is heated, and its mean radius of sample cooling rear side is treated, before and after sintering
Comparison foundation of the radius ratio as mobility.
The length of side 8mm such as length of side 2mm, the bottom such as the pyrometric cone of densification, the high 30mm of pyrometric cone, upper bottom are made of prod cast.From
After so drying, pyrometric cone is fixed on frustum with binding agent, 80 °~82 ° inclinations angle, the cone that will be prepared are kept with table top
It is put into sintering furnace, refractoriness of temperature when recording cone tip level as bonding agent.
Bending strength test is carried out using three-point bending method, each sample is chosen four strips and tested, averaged
Obtain the bending strength of sample.
It is micro- that sample section is carried out using the diamond based composite ceramic material strip being broken after bending strength test
See the observation of pattern.Strip is prepared into the sample that can be used for the observation of SEM microscopic appearance as requested, in electronics
Observed under microscope, obtain the section SEM pictures of different amplification.
Fig. 1 is the composite section microscopic appearance figure of embodiment 1, it can be seen that basic bonding agent has wrapped up gold well
Hard rock particle, bonding agent bridge is thicker, and overall structure is closer, shows diamond particles and the good interface of vitrified bond
Bonding state.
The correlated performance test result of embodiment 1 is：Bending strength 76.24MPa, refractoriness are 641 DEG C, and mobility is
283%.
Comparative example
Removed in comparative example and do not add WO in embodiment 13In addition, other processes are identical with embodiment 1.
The dependence test result of comparative example is：Bending strength 64.85MPa, refractoriness are 639 DEG C, and mobility is
261%.
Embodiment 2
WO is removed in embodiment 23Addition is that other processes are identical with example 1 beyond 2wt%.
The dependence test result of embodiment 2 is：Bending strength 70.46MPa, refractoriness are 636 DEG C, mobility 288%.
Embodiment 3
WO is removed in embodiment 33Addition is that other processes are identical with example 1 beyond 6wt%.
The dependence test result of embodiment 3 is：Bending strength 71.29MPa, refractoriness are 639 DEG C, mobility 275%.
Embodiment 4
WO is removed in embodiment 43Addition is that other processes are identical with example 1 beyond 8wt%.
The dependence test result of embodiment 4 is：Bending strength 68.36MPa, refractoriness are 668 DEG C, mobility 264%.
Embodiment 5
WO is removed in embodiment 53Addition is that other processes are identical with example 1 beyond 10wt%.
The dependence test result of embodiment 4 is：Bending strength 66.94MPa, refractoriness are 640 DEG C, mobility 270%.
Each raw material cited by the present invention, and the bound value of raw material, interval value can realize the present invention, then this is not
It is illustrated one by one.
Above example is only the exemplary description done to the present invention, it should explanation, is not departing from the present invention's
In the case of core, any simple deformation, modification or other skilled in the art can not spend creative work
Equivalent substitution each falls within protection scope of the present invention.
Claims (7)
- A kind of 1. bonding agent based on low-temperature high-strength devitrified glass and its diamond composite, raw material components and its mass ratio: Diamond particles:The ﹕ 5 of binding agent=15 ﹕ 80；The raw material components and its mass percentage content of basic bonding agent are：SiO235~ 60wt%, B2O310~15wt%, Na23~8wt% of O, Li25~15wt% of O, Al2O35~12wt%, ZnO 5~ 17wt%, TiO2+ZrO2For 3~5wt%, the TiO2+ZrO2Mol ratio 2:1；Additional WO on this basis32~ 10wt%.The preparation method of above-mentioned low-temperature high-strength devitrified glass and its diamond composite, there are following steps：(1) raw material components and its mass percentage content of basic bonding agent are pressed：SiO235~60wt%, B2O310~ 15wt%, Na2O3~8wt%, Li25~15wt% of O, Al2O35~12wt%, ZnO 5~17wt%, TiO2+ZrO2For 3~ 5wt%, carry out dispensing, the TiO2+ZrO2Mol ratio 2:1；It is put into ball mill to dry grind 6 hours, sieving, obtains basic combination Agent；By 2~10wt% WO3Powder is applied in basic bonding agent powder；(2) the basic bonding agent of step (1) is mixed with diamond particles, binding agent by the ﹕ 5 of 15 ﹕ 80 mass ratio, dry pressing For base substrate, the diamond particles granularity is 100~120 μm；(3) base substrate of step (2) is sintered in high temperature sintering furnace in 800 DEG C, 100min is incubated when being cooled to 640 DEG C, then Room temperature is cooled to, low-temperature high-strength devitrified glass and its diamond composite is made.
- 2. a kind of low-temperature high-strength devitrified glass according to claim 1 and its diamond composite, it is characterised in that institute State that step (1) is put into the ball of ball mill, material mass ratio is 2 ﹕ 1, it is 100 mesh sieves to sieve.
- 3. a kind of low-temperature high-strength devitrified glass according to claim 1 and its diamond composite, it is characterised in that institute State the WO of step (1)3Additional mass percent content be 4%.
- 4. a kind of low-temperature high-strength devitrified glass according to claim 1 and its diamond composite, it is characterised in that institute The refractoriness for stating the basic bonding agent of step (1) is 663 DEG C, mobility 259%, intensity 76.24MPa.
- 5. a kind of low-temperature high-strength devitrified glass according to claim 1 and its diamond composite, it is characterised in that institute The binding agent for stating step (2) is dextrin.
- 6. a kind of low-temperature high-strength devitrified glass according to claim 1 and its diamond composite, it is characterised in that institute The base substrate for stating step (2) is 30 millimeters × 6 millimeters × 4 millimeters of rectangular strip base substrate.
- 7. a kind of low-temperature high-strength devitrified glass according to claim 1 and its diamond composite, it is characterised in that institute The temperature schedule for stating step (3) is：Less than 400 DEG C heating rates are 3 DEG C/min, and 60min is incubated in 400 DEG C；400 DEG C to 800 DEG C heating rate is 4 DEG C/min, and 110min are incubated in 800 DEG C；800 DEG C to 640 DEG C rate of temperature fall are 2 DEG C/min, in 640 DEG C of guarantors Warm 100min, is then cooled to room temperature.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108863363A (en) * | 2018-06-09 | 2018-11-23 | 南京理工大学 | A kind of Technique of Vitrified Diamond Wheels material and its microwave sintering process |
| CN112279518A (en) * | 2020-10-30 | 2021-01-29 | 武汉理工大学 | Low-temperature sintered microcrystalline glass bonding agent for diamond grinding wheel and preparation method and application thereof |
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| CN102421718A (en) * | 2009-07-31 | 2012-04-18 | 株式会社小原 | Glass ceramic, sintered glass ceramic material, glass ceramic complex, glass micropowder, slurry-like mixture, and photocatalyst |
| CN105254181A (en) * | 2014-07-18 | 2016-01-20 | 长春理工大学 | Europium-doped tungstate transparent glass ceramic and preparation method thereof |
| CN106116579A (en) * | 2016-06-21 | 2016-11-16 | 天津大学 | A kind of high-strength diamond based composite ceramic material |
| CN106830936A (en) * | 2017-01-23 | 2017-06-13 | 天津大学 | A kind of low-temperature high-strength diamond base microcrystal glass composite |
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| CN102421718A (en) * | 2009-07-31 | 2012-04-18 | 株式会社小原 | Glass ceramic, sintered glass ceramic material, glass ceramic complex, glass micropowder, slurry-like mixture, and photocatalyst |
| CN101993249A (en) * | 2010-10-26 | 2011-03-30 | 河南工业大学 | Preparation method of ceramic bond for low-temperature high-strength cubic boron nitride (CBN) grinding tool |
| CN105254181A (en) * | 2014-07-18 | 2016-01-20 | 长春理工大学 | Europium-doped tungstate transparent glass ceramic and preparation method thereof |
| CN106116579A (en) * | 2016-06-21 | 2016-11-16 | 天津大学 | A kind of high-strength diamond based composite ceramic material |
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| CN112279518A (en) * | 2020-10-30 | 2021-01-29 | 武汉理工大学 | Low-temperature sintered microcrystalline glass bonding agent for diamond grinding wheel and preparation method and application thereof |
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Application publication date: 20180105 |