CN107382288A - A kind of preparation technology of novel fire resistant ceramic material - Google Patents

A kind of preparation technology of novel fire resistant ceramic material Download PDF

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CN107382288A
CN107382288A CN201710674887.6A CN201710674887A CN107382288A CN 107382288 A CN107382288 A CN 107382288A CN 201710674887 A CN201710674887 A CN 201710674887A CN 107382288 A CN107382288 A CN 107382288A
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ceramic material
powder
sintering
fire resistant
microwave
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赵伟
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Ganzhou Yi Jia Xing Ceramics Co Ltd
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Ganzhou Yi Jia Xing Ceramics Co Ltd
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Abstract

The invention discloses a kind of preparation technology of novel fire resistant ceramic material, comprise the following steps：It is raw material from silicon nitride, aluminium nitride, aluminum oxide, silica, zirconium dioxide, tungstic acid；It is granulated after grinding；The depanning after compression molding；Molding blank is put into sintering furnace, high temperature ceramic material is made by two-step sintering successively.Compared with prior art, high temperature ceramic material produced by the present invention is using silicon nitride and aluminum oxide as primary raw material, by adding aluminium nitride, silica, zirconium dioxide, tungstic acid, and sintered by double fragmentation, obtained high temperature ceramic material has good resistance to elevated temperatures, stronger mechanical strength, not only intensity is high for the ceramics, resistance to corrosion and heat-resisting ability are extremely strong, and the rub resistance ability on its surface greatly improves, its abrasion is reduced, increases its service life, and also provide preparation method, method is simple, and cost is low, and operating efficiency is high.

Description

A kind of preparation technology of novel fire resistant ceramic material
Technical field
The present invention relates to function ceramics preparing technical field, particularly a kind of preparation work of novel fire resistant ceramic material Skill.
Background technology
With the development of society, ceramics occupy an important position in many fields, and recognized by many consumers Can, ceramic use environment is sufficiently complex, especially with high temperature in the environment of, greatly reduce service life, increase cost, So existing ceramics still can not meet the needs of social development, it is still necessary to which developing one kind, there are resistant to elevated temperatures ceramics to expire Sufficient demand.
The content of the invention
The invention aims to solve the deficiency of prior art problem, there is provided a kind of system of novel fire resistant ceramic material Standby technique.
To reach above-mentioned purpose, the present invention is implemented according to following technical scheme：
A kind of preparation technology of novel fire resistant ceramic material, comprises the following steps：
S1, it is raw material from silicon nitride, aluminium nitride, aluminum oxide, silica, zirconium dioxide, tungstic acid, the nitridation Silicon, aluminium nitride, aluminum oxide, silica, zirconium dioxide, the mass ratio of tungstic acid are:22-30：10-15：35-55：15- 23：7.5-9.5：2.7-5.2；
S2, with ball mill above-mentioned raw materials are ground respectively, respectively obtain beta-silicon nitride powder that particle diameter is 0.05-0.3 microns, Aluminium nitride powder, alumina powder, silicon-dioxide powdery, zirconium dioxide powder, tungstic acid powder；
S3, by beta-silicon nitride powder, aluminium nitride powder, alumina powder, silicon-dioxide powdery, zirconium dioxide powder, three oxygen Change tungsten powder body is according to mass ratio:22-30：10-15：35-55：15-23：7.5-9.5：2.7-5.2 is sent into comminutor and is granulated；
S4, it is put into after being granulated in mould, the depanning after compression molding；
S5, molding blank is put into sintering furnace, carries out microwave sintering in microwave sintering device under protective atmosphere, it is micro- The frequency span of ripple is 2.15GHz, and the temperature of microwave sintering is 500-1000 DEG C, pressure 2-4MPa, is incubated after sintering Taken out after a period of time；
S6, by step S5 sinter after base substrate be placed again into sintering furnace, in microwave sintering device under protective atmosphere Middle carry out microwave sintering, the frequency span of microwave is 2.45GHz, and the temperature of microwave sintering is 1100-1200 DEG C, and pressure is 3-5MPa, taken out after being incubated a period of time after sintering, natural cooling obtains novel fire resistant ceramic material.
Further, protective atmosphere is nitrogen or argon gas in the step S5 and S6.
Preferably, the step S5 soaking times are 1-2 hours.
Preferably, the step S5 soaking times are 4-20 hours.
Compared with prior art, high temperature ceramic material produced by the present invention is using silicon nitride and aluminum oxide as primary raw material, Sintered by adding aluminium nitride, silica, zirconium dioxide, tungstic acid, and by double fragmentation, obtained refractory ceramics Material has good resistance to elevated temperatures, stronger mechanical strength, and not only intensity is high for the ceramics, resistance to corrosion and high temperature resistant energy Power is extremely strong, and the rub resistance ability on its surface greatly improves, and reduces its abrasion, increases its service life, and also provide system Preparation Method, method is simple, and cost is low, and operating efficiency is high.
Embodiment
With reference to specific embodiment, the invention will be further described, the illustrative examples and explanation invented herein For explaining the present invention, but it is not as a limitation of the invention.
Embodiment 1
A kind of preparation technology of novel fire resistant ceramic material, comprises the following steps：
S1, weigh 22 grams of silicon nitride, 10 grams of aluminium nitride, 35 grams of aluminum oxide, 5 grams of silica 1,7.5 grams of zirconium dioxide, three 2.7 grams of tungsten oxide, above-mentioned raw materials are ground respectively with ball mill, respectively obtain beta-silicon nitride powder, nitrogen that particle diameter is 0.05 micron Change aluminium powder body, alumina powder, silicon-dioxide powdery, zirconium dioxide powder, tungstic acid powder；
S2, by beta-silicon nitride powder, aluminium nitride powder, alumina powder, silicon-dioxide powdery, zirconium dioxide powder, three oxygen Change and be granulated in tungsten powder body feeding comminutor；
S3, it is put into after being granulated in mould, the depanning after compression molding；
S4, molding blank is put into sintering furnace, carried out in the case where atmosphere is nitrogen or argon gas atmosphere in microwave sintering device Microwave sintering, the frequency span of microwave is 2.15GHz, and the temperature of microwave sintering is 500 DEG C, pressure 2MPa, after sintering Insulation is taken out after 1 hour；
S5, the base substrate after being sintered in step S5 is placed again into sintering furnace, in the case where atmosphere is nitrogen or argon gas atmosphere micro- Microwave sintering is carried out in ripple sintering equipment, the frequency span of microwave is 2.45GHz, and the temperature of microwave sintering is 1100 DEG C, Pressure is 3MPa, is taken out after being incubated 4 hours after sintering, and natural cooling obtains novel fire resistant ceramic material.
Embodiment 2
A kind of preparation technology of novel fire resistant ceramic material, comprises the following steps：
S1, weigh 30 grams of silicon nitride, 15 grams of aluminium nitride, 55 grams of aluminum oxide, 23 grams of silica, 9.5 grams of zirconium dioxide, three 5.2 grams of tungsten oxide, above-mentioned raw materials are ground respectively with ball mill, respectively obtain beta-silicon nitride powder, nitridation that particle diameter is 0.3 micron Aluminium powder body, alumina powder, silicon-dioxide powdery, zirconium dioxide powder, tungstic acid powder；
S2, by beta-silicon nitride powder, aluminium nitride powder, alumina powder, silicon-dioxide powdery, zirconium dioxide powder, three oxygen Change and be granulated in tungsten powder body feeding comminutor；
S3, it is put into after being granulated in mould, the depanning after compression molding；
S4, molding blank is put into sintering furnace, carried out in the case where atmosphere is nitrogen or argon gas atmosphere in microwave sintering device Microwave sintering, the frequency span of microwave is 2.15GHz, and the temperature of microwave sintering is 1000 DEG C, pressure 4MPa, after sintering Insulation is taken out after 2 hours；
S5, the base substrate after being sintered in step S5 is placed again into sintering furnace, in the case where atmosphere is nitrogen or argon gas atmosphere micro- Microwave sintering is carried out in ripple sintering equipment, the frequency span of microwave is 2.45GHz, and the temperature of microwave sintering is 1200 DEG C, Pressure is 5MPa, is taken out after being incubated 20 hours after sintering, and natural cooling obtains novel fire resistant ceramic material.
Embodiment 3
A kind of preparation technology of novel fire resistant ceramic material, comprises the following steps：
S1, weigh 26 grams of silicon nitride, 13 grams of aluminium nitride, 40 grams of aluminum oxide, 8 grams of silica 1,8 grams of zirconium dioxide, three oxygen Change 4 grams of tungsten, respectively ground above-mentioned raw materials with ball mill, respectively obtain beta-silicon nitride powder, aluminum nitride powder that particle diameter is 0.1 micron Body, alumina powder, silicon-dioxide powdery, zirconium dioxide powder, tungstic acid powder；
S2, by beta-silicon nitride powder, aluminium nitride powder, alumina powder, silicon-dioxide powdery, zirconium dioxide powder, three oxygen Change and be granulated in tungsten powder body feeding comminutor；
S3, it is put into after being granulated in mould, the depanning after compression molding；
S4, molding blank is put into sintering furnace, carried out in the case where atmosphere is nitrogen or argon gas atmosphere in microwave sintering device Microwave sintering, the frequency span of microwave is 2.15GHz, and the temperature of microwave sintering is 800 DEG C, pressure 3MPa, after sintering Insulation is taken out after 1.5 hours；
S5, the base substrate after being sintered in step S5 is placed again into sintering furnace, in the case where atmosphere is nitrogen or argon gas atmosphere micro- Microwave sintering is carried out in ripple sintering equipment, the frequency span of microwave is 2.45GHz, and the temperature of microwave sintering is 1150 DEG C, Pressure is 4MPa, is taken out after being incubated 10 hours after sintering, and natural cooling obtains novel fire resistant ceramic material.
Technical scheme is not limited to the limitation of above-mentioned specific embodiment, and every technique according to the invention scheme is done The technology deformation gone out, each falls within protection scope of the present invention.

Claims (4)

1. a kind of preparation technology of novel fire resistant ceramic material, it is characterised in that comprise the following steps：
S1, it is raw material from silicon nitride, aluminium nitride, aluminum oxide, silica, zirconium dioxide, tungstic acid, the silicon nitride, Aluminium nitride, aluminum oxide, silica, zirconium dioxide, the mass ratio of tungstic acid are:22-30：10-15：35-55：15-23： 7.5-9.5：2.7-5.2；
S2, with ball mill above-mentioned raw materials are ground respectively, respectively obtain beta-silicon nitride powder, nitridation that particle diameter is 0.05-0.3 microns Aluminium powder body, alumina powder, silicon-dioxide powdery, zirconium dioxide powder, tungstic acid powder；
S3, by beta-silicon nitride powder, aluminium nitride powder, alumina powder, silicon-dioxide powdery, zirconium dioxide powder, tungstic acid Powder is according to mass ratio:22-30：10-15：35-55：15-23：7.5-9.5：2.7-5.2 is sent into comminutor and is granulated；
S4, it is put into after being granulated in mould, the depanning after compression molding；
S5, molding blank is put into sintering furnace, carries out microwave sintering in microwave sintering device under protective atmosphere, microwave Frequency span is 2.15GHz, and the temperature of microwave sintering is 500-1000 DEG C, pressure 2-4MPa, and one section is incubated after sintering Taken out after time；
S6, by step S5 sinter after base substrate be placed again into sintering furnace, enter under protective atmosphere in microwave sintering device Row microwave sintering, the frequency span of microwave is 2.45GHz, and the temperature of microwave sintering is 1100-1200 DEG C, pressure 3- 5MPa, taken out after being incubated a period of time after sintering, natural cooling obtains novel fire resistant ceramic material.
2. the preparation technology of novel fire resistant ceramic material according to claim 1, it is characterised in that：The step S5 and Protective atmosphere is nitrogen or argon gas in S6.
3. the preparation technology of novel fire resistant ceramic material according to claim 1, it is characterised in that：The step S5 is protected The warm time is 1-2 hours.
4. the preparation technology of novel fire resistant ceramic material according to claim 1, it is characterised in that：The step S5 is protected The warm time is 4-20 hours.
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN110028310A (en) * 2019-04-10 2019-07-19 福建省德化戴玉堂陶瓷有限公司 A kind of preparation method of recycling fluorite ore tailing production refractory ceramics
CN114538932A (en) * 2022-03-21 2022-05-27 福建华清电子材料科技有限公司 Preparation method of co-fired aluminum nitride ceramic substrate

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CN105503198A (en) * 2015-11-30 2016-04-20 衡阳凯新特种材料科技有限公司 Silicon nitride material and preparation method thereof
CN106810264A (en) * 2015-11-27 2017-06-09 衡阳凯新特种材料科技有限公司 A kind of preparation method of silicon nitride ceramics

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