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Surface modification method of reactive sintering silicon carbide product
A surface modification method of a reaction-sintered silicon carbide product comprises the following steps: step 1, carrying out extrusion molding on reaction-sintered silicon carbide pug, and drying a biscuit; step 2, preparing slurry; step 3, soaking the dried biscuit in the grouting slurry or spraying the slurry onto the biscuit by a spray gun, so that the surface of the biscuit absorbs the slurry to form a compact thin layer; 4, after the slurry is adsorbed on the surface, drying; and 5, sintering the dried biscuit in a furnace. The reactive sintering silicon carbide biscuit is subjected to surface treatment before entering a furnace, a compact coating can be effectively formed on the surface of the biscuit, surface gaps of the biscuit can be effectively blocked, after the product is sintered, the advantage of product extrusion can be achieved, uniformity of the surface of the product can be improved, the surface of the product is more compact, silicon carbide is higher, the use temperature of the product can be effectively increased, and the service life of the product is prolonged. The use temperature of a conventional silicon carbide pipe is 1300 DEG C, while the use temperature of the silicon carbide pipe subjected to surface treatment can reach 1500 DEG C, and meanwhile, free silicon cannot be separated out from the surface. The surface performance is good, and the service life of the product is finally prolonged.
一种反应烧结碳化硅产品的表面改性方法，步骤1、反应烧结碳化硅泥料挤出成型后，素坯干燥；步骤2、制备浆料；步骤3、干燥后素坯浸泡注浆浆料中或喷枪将浆料喷到素坯上，使素坯表面吸浆，形成致密的薄层；步骤4、表面吸附浆料后，干燥；步骤5、干燥后的素坯装炉炉子烧结。反应烧结碳化硅素坯进炉子之前进行表面处理，可以有效的在素坯表面形成致密涂层，有效添堵素坯表面空隙，产品烧结后，既能达到挤出产品的优势，又能改善产品表面的均匀一致，使其表面更致密，碳化硅更高，可以有效提高产品使用温度，常规的碳化硅管使用温度在1300度，而本发明表面处理后的碳化硅管使用温度可达到1500度，同时表面不会析出游离硅。表面性能好，最终延长产品的使用寿命。
Surface modification method of reactive sintering silicon carbide product
A surface modification method of a reaction-sintered silicon carbide product comprises the following steps: step 1, carrying out extrusion molding on reaction-sintered silicon carbide pug, and drying a biscuit; step 2, preparing slurry; step 3, soaking the dried biscuit in the grouting slurry or spraying the slurry onto the biscuit by a spray gun, so that the surface of the biscuit absorbs the slurry to form a compact thin layer; 4, after the slurry is adsorbed on the surface, drying; and 5, sintering the dried biscuit in a furnace. The reactive sintering silicon carbide biscuit is subjected to surface treatment before entering a furnace, a compact coating can be effectively formed on the surface of the biscuit, surface gaps of the biscuit can be effectively blocked, after the product is sintered, the advantage of product extrusion can be achieved, uniformity of the surface of the product can be improved, the surface of the product is more compact, silicon carbide is higher, the use temperature of the product can be effectively increased, and the service life of the product is prolonged. The use temperature of a conventional silicon carbide pipe is 1300 DEG C, while the use temperature of the silicon carbide pipe subjected to surface treatment can reach 1500 DEG C, and meanwhile, free silicon cannot be separated out from the surface. The surface performance is good, and the service life of the product is finally prolonged.
一种反应烧结碳化硅产品的表面改性方法，步骤1、反应烧结碳化硅泥料挤出成型后，素坯干燥；步骤2、制备浆料；步骤3、干燥后素坯浸泡注浆浆料中或喷枪将浆料喷到素坯上，使素坯表面吸浆，形成致密的薄层；步骤4、表面吸附浆料后，干燥；步骤5、干燥后的素坯装炉炉子烧结。反应烧结碳化硅素坯进炉子之前进行表面处理，可以有效的在素坯表面形成致密涂层，有效添堵素坯表面空隙，产品烧结后，既能达到挤出产品的优势，又能改善产品表面的均匀一致，使其表面更致密，碳化硅更高，可以有效提高产品使用温度，常规的碳化硅管使用温度在1300度，而本发明表面处理后的碳化硅管使用温度可达到1500度，同时表面不会析出游离硅。表面性能好，最终延长产品的使用寿命。
Surface modification method of reactive sintering silicon carbide product
一种反应烧结碳化硅产品的表面改性方法
ZHAO JIN (author) / WANG XINGLONG (author) / HUANGFU BINGCHEN (author) / MA TAO (author) / YANG KAI (author) / XI RENFANG (author) / LI XINRONG (author)
2022-04-29
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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