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A platform for research: civil engineering, architecture and urbanism
Composite ceramic material as well as preparation method and application thereof
The invention belongs to the technical field of composite materials, and particularly relates to a composite ceramic material and a preparation method and application thereof. The specific surface area of the material is increased through the microtexture, the nucleation density of a nickel phosphide coating can be improved, the number of micropores in an interface can be reduced, accordingly, tight interface bonding is formed, physical bonding between the coating and a substrate is promoted, and the problem that the nickel phosphide coating and a tungsten carbide interface are poor in bonding force is solved; according to the invention, the transition layer is added between the nickel phosphide coating and the tungsten carbide, and the transition layer can be chemically bonded with the nickel phosphide coating and the tungsten carbide interface, so that the interface bonding force is enhanced, and the thermal expansion coefficient of the transition layer is between that of nickel phosphide and that of tungsten carbide, so that the internal stress of nickel phosphide can be reduced; the high-temperature-resistant degree of the nickel phosphide coating is improved, the problem that thermal expansion coefficients and crystal lattices between the nickel phosphide coating and the nickel phosphide coating are not matched is solved, the interface bonding force of the coating is further improved, and the high-temperature-resistant performance and the chemical stability of the nickel phosphide coating are improved.
本发明属于复合材料技术领域，具体涉及一种复合陶瓷材料及其制备方法和应用。本发明通过微织构增大材料比表面积，可以提高磷化镍镀层的成核密度，减少界面中的微孔数量，从而形成紧密的界面键合，促进镀层与基板之间的物理结合，解决了磷化镍镀层与碳化钨界面结合力差的问题；本发明通过在磷化镍镀层和碳化钨中间添加过渡层，过渡层与磷化镍镀层和碳化钨界面处能够发生化学键合，从而增强界面结合力，并且过渡层的热膨胀系数介于磷化镍和碳化钨之间，能减少磷化镍的内应力，提高磷化镍镀层的耐高温程度，解决了二者之间热膨胀系数和晶格不匹配的问题，进一步提高镀层界面结合力，并且提高了磷化镍镀层的耐高温性能和化学稳定性。
Composite ceramic material as well as preparation method and application thereof
The invention belongs to the technical field of composite materials, and particularly relates to a composite ceramic material and a preparation method and application thereof. The specific surface area of the material is increased through the microtexture, the nucleation density of a nickel phosphide coating can be improved, the number of micropores in an interface can be reduced, accordingly, tight interface bonding is formed, physical bonding between the coating and a substrate is promoted, and the problem that the nickel phosphide coating and a tungsten carbide interface are poor in bonding force is solved; according to the invention, the transition layer is added between the nickel phosphide coating and the tungsten carbide, and the transition layer can be chemically bonded with the nickel phosphide coating and the tungsten carbide interface, so that the interface bonding force is enhanced, and the thermal expansion coefficient of the transition layer is between that of nickel phosphide and that of tungsten carbide, so that the internal stress of nickel phosphide can be reduced; the high-temperature-resistant degree of the nickel phosphide coating is improved, the problem that thermal expansion coefficients and crystal lattices between the nickel phosphide coating and the nickel phosphide coating are not matched is solved, the interface bonding force of the coating is further improved, and the high-temperature-resistant performance and the chemical stability of the nickel phosphide coating are improved.
本发明属于复合材料技术领域，具体涉及一种复合陶瓷材料及其制备方法和应用。本发明通过微织构增大材料比表面积，可以提高磷化镍镀层的成核密度，减少界面中的微孔数量，从而形成紧密的界面键合，促进镀层与基板之间的物理结合，解决了磷化镍镀层与碳化钨界面结合力差的问题；本发明通过在磷化镍镀层和碳化钨中间添加过渡层，过渡层与磷化镍镀层和碳化钨界面处能够发生化学键合，从而增强界面结合力，并且过渡层的热膨胀系数介于磷化镍和碳化钨之间，能减少磷化镍的内应力，提高磷化镍镀层的耐高温程度，解决了二者之间热膨胀系数和晶格不匹配的问题，进一步提高镀层界面结合力，并且提高了磷化镍镀层的耐高温性能和化学稳定性。
Composite ceramic material as well as preparation method and application thereof
一种复合陶瓷材料及其制备方法和应用
ZHAO BIN (author) / WU XIANYOU (author) / ZHANG ZHAOQIAN (author) / ZHOU TIANFENG (author) / YAN PEI (author) / QIU TIANYANG (author) / WANG XIBIN (author) / LIANG ZHIQIANG (author) / LIU ZHIBING (author) / XIE LIJING (author)
2024-10-11
Patent
Electronic Resource
Chinese
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