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A platform for research: civil engineering, architecture and urbanism
Method for sintering silicon carbide ceramic surface through nitridation modification reaction
The invention relates to surface nitridation modified reaction sintered silicon carbide ceramic and a preparation method thereof. The reaction sintered silicon carbide ceramic comprises silicon carbide, carbon black, carbon fibers, a binder, a dispersant and deionized water. The binder is formed by mixing carboxymethyl cellulose and a PAF-II type powdery binder according to any ratio; and the dispersant is formed by mixing polyethylene glycol and polyvinylpyrrolidone in any ratio. The preparation method comprises the steps of material mixing, material waking, sintering and surface treatment. Flowing nitrogen is introduced under a certain pressure, so that the nitrogen reacts with free silicon to generate a compound of silicon and nitrogen, the service life of the reaction sintered silicon carbide is prolonged, and the corrosion resistance of the reaction sintered silicon carbide is improved.
本发明涉及一种表面氮化改性的反应烧结碳化硅陶瓷及其制备方法，反应烧结碳化硅陶瓷包括碳化硅、炭黑、碳纤维、粘结剂、分散剂、去离子水；所述粘结剂为羧甲基纤维素和PAF‑Ⅱ型粉状粘结剂以任意比混合；所述分散剂为聚乙二醇和聚乙烯吡咯烷酮以任意比混合。制备方法包括混料、醒料、烧结和表面处理。本发明是在一定压力下通入流动的氮气，使氮气与游离硅反应生成硅和氮的化合物，提高反应烧结碳化硅的使用寿命和耐腐蚀能力。
Method for sintering silicon carbide ceramic surface through nitridation modification reaction
The invention relates to surface nitridation modified reaction sintered silicon carbide ceramic and a preparation method thereof. The reaction sintered silicon carbide ceramic comprises silicon carbide, carbon black, carbon fibers, a binder, a dispersant and deionized water. The binder is formed by mixing carboxymethyl cellulose and a PAF-II type powdery binder according to any ratio; and the dispersant is formed by mixing polyethylene glycol and polyvinylpyrrolidone in any ratio. The preparation method comprises the steps of material mixing, material waking, sintering and surface treatment. Flowing nitrogen is introduced under a certain pressure, so that the nitrogen reacts with free silicon to generate a compound of silicon and nitrogen, the service life of the reaction sintered silicon carbide is prolonged, and the corrosion resistance of the reaction sintered silicon carbide is improved.
本发明涉及一种表面氮化改性的反应烧结碳化硅陶瓷及其制备方法，反应烧结碳化硅陶瓷包括碳化硅、炭黑、碳纤维、粘结剂、分散剂、去离子水；所述粘结剂为羧甲基纤维素和PAF‑Ⅱ型粉状粘结剂以任意比混合；所述分散剂为聚乙二醇和聚乙烯吡咯烷酮以任意比混合。制备方法包括混料、醒料、烧结和表面处理。本发明是在一定压力下通入流动的氮气，使氮气与游离硅反应生成硅和氮的化合物，提高反应烧结碳化硅的使用寿命和耐腐蚀能力。
Method for sintering silicon carbide ceramic surface through nitridation modification reaction
一种氮化改性反应烧结碳化硅陶瓷表面的方法
MA LI (author) / SUN SHAN (author) / GONG HONGYU (author) / MA KUN (author) / GONG ZHIGANG (author) / LI ZHITAO (author) / GONG XINGYU (author) / YUAN HONGFENG (author)
2021-08-27
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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