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High-strength wear-resistant silicon nitride combined silicon carbide ceramic and preparation method thereof
The invention relates to the technical field of wear-resistant ceramics, in particular to a high-strength wear-resistant silicon nitride combined silicon carbide ceramic and a preparation method thereof.The high-strength wear-resistant silicon nitride combined silicon carbide ceramic is prepared from monatomic silicon powder, silicon carbide powder, silicon nitride powder, a hardening and tempering agent and a binding agent, and the hardening and tempering agent comprises Y2O3 micro-nano particles, zirconium carbide powder, zirconium powder and tungsten carbide. A reaction sintering silicon nitride and silicon carbide combined process is adopted, and under the coupling action of a composite tempering agent and controllable fibrous and columnar Si3N4 generated in situ, optimization design and controllable preparation are carried out on a microstructure and phase composition; the ZrSi2N4 and the silicon nitride can form good chemical bonding. The wear-resistant ceramic prepared by the method has the characteristics of high strength, high hardness and high toughness, the wear resistance, the corrosion resistance and the impact resistance are remarkably improved, the service life is prolonged, the production efficiency of related industries is greatly improved, meanwhile, the pollution to materials is reduced, the high performance and the stability of the product are ensured, and the wear-resistant ceramic has obvious economic benefits.
本发明涉及耐磨陶瓷技术领域，尤其涉及一种高强耐磨氮化硅结合碳化硅陶瓷及制备方法，一种高强耐磨氮化硅结合碳化硅陶瓷，由单质硅粉、碳化硅粉、氮化硅粉、调质剂、结合剂制备而成：调质剂包括Y2O3微纳米颗粒、碳化锆粉、锆粉和碳化钨。采用反应烧结氮化硅结合碳化硅工艺，复合调质剂和原位生成可控的纤维状、柱状Si3N4的耦合作用下，对微观结构与物相组成进行优化设计与可控制备；ZrSi2N4与氮化硅能形成良好的化学结合。该方法制备的耐磨陶瓷具有高强、高硬、高韧的特点，耐磨性、耐腐蚀性、耐冲击性能显著提升，服役寿命延长，大幅度提高相关产业生产效率，同时减少对物料的污染，保证了产品的高性能与稳定性，且具有明显的经济效益。
High-strength wear-resistant silicon nitride combined silicon carbide ceramic and preparation method thereof
The invention relates to the technical field of wear-resistant ceramics, in particular to a high-strength wear-resistant silicon nitride combined silicon carbide ceramic and a preparation method thereof.The high-strength wear-resistant silicon nitride combined silicon carbide ceramic is prepared from monatomic silicon powder, silicon carbide powder, silicon nitride powder, a hardening and tempering agent and a binding agent, and the hardening and tempering agent comprises Y2O3 micro-nano particles, zirconium carbide powder, zirconium powder and tungsten carbide. A reaction sintering silicon nitride and silicon carbide combined process is adopted, and under the coupling action of a composite tempering agent and controllable fibrous and columnar Si3N4 generated in situ, optimization design and controllable preparation are carried out on a microstructure and phase composition; the ZrSi2N4 and the silicon nitride can form good chemical bonding. The wear-resistant ceramic prepared by the method has the characteristics of high strength, high hardness and high toughness, the wear resistance, the corrosion resistance and the impact resistance are remarkably improved, the service life is prolonged, the production efficiency of related industries is greatly improved, meanwhile, the pollution to materials is reduced, the high performance and the stability of the product are ensured, and the wear-resistant ceramic has obvious economic benefits.
本发明涉及耐磨陶瓷技术领域，尤其涉及一种高强耐磨氮化硅结合碳化硅陶瓷及制备方法，一种高强耐磨氮化硅结合碳化硅陶瓷，由单质硅粉、碳化硅粉、氮化硅粉、调质剂、结合剂制备而成：调质剂包括Y2O3微纳米颗粒、碳化锆粉、锆粉和碳化钨。采用反应烧结氮化硅结合碳化硅工艺，复合调质剂和原位生成可控的纤维状、柱状Si3N4的耦合作用下，对微观结构与物相组成进行优化设计与可控制备；ZrSi2N4与氮化硅能形成良好的化学结合。该方法制备的耐磨陶瓷具有高强、高硬、高韧的特点，耐磨性、耐腐蚀性、耐冲击性能显著提升，服役寿命延长，大幅度提高相关产业生产效率，同时减少对物料的污染，保证了产品的高性能与稳定性，且具有明显的经济效益。
High-strength wear-resistant silicon nitride combined silicon carbide ceramic and preparation method thereof
一种高强耐磨氮化硅结合碳化硅陶瓷及制备方法
YU CHAO (author) / ZHU HONGXI (author) / WU JIANXIANG (author) / WU PEIXIA (author)
2023-10-20
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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