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A platform for research: civil engineering, architecture and urbanism
Hafnium diboride-silicon carbide-tantalum disilicide-gadolinium oxide composite coating and preparation method thereof
The invention provides a hafnium diboride-silicon carbide-tantalum disilicide-gadolinium oxide composite coating and a preparation method thereof, and belongs to the technical field of composite coatings. According to the invention, hafnium diboride-silicon carbide-tantalum disilicide-gadolinium oxide composite powder is used as a raw material of the coating, so that not only is relatively strong high-temperature oxidation resistance of hafnium diboride-silicon carbide of a traditional system maintained, but also crystal transformation of an oxide is stabilized and a glass phase is supplemented by using a tantalum disilicide adding phase; and the gadolinium oxide adding phase is used for improving the overall emissivity of the coating and enhancing the viscosity of the glass phase, so that the high-temperature oxygen corrosion resistance of the coating is further improved. The coating is prepared in an atmospheric plasma spraying mode, the method has the advantages of being simple in process, easy to control, high in production efficiency, low in cost and the like, and meanwhile the characteristics that the thickness of the coating is controllable, the defects of the coating are reduced, the compactness of the coating is improved, and the characteristics of a powder material are reserved to the maximum degree can be achieved.
本发明提供了一种二硼化铪‑碳化硅‑二硅化钽‑氧化钆复合涂层及其制备方法，属于复合涂层技术领域。本发明使用二硼化铪‑碳化硅‑二硅化钽‑氧化钆复合粉体作为涂层原料，不仅保持了传统体系二硼化铪‑碳化硅较强的高温抗氧化能力，还利用二硅化钽添加相来稳定氧化物的晶型转变以及补充玻璃相，利用氧化钆添加相来提高涂层整体发射率和增强玻璃相黏度的作用，进一步提高涂层的高温抗氧侵蚀的能力。本发明采用大气等离子喷涂的方式制备涂层，具有工艺简单、易于控制、生产效率高和成本低等优点，同时能够实现涂层厚度可控、减少涂层缺陷、提高涂层致密程度、最大程度保留粉体材料特性等特性。
Hafnium diboride-silicon carbide-tantalum disilicide-gadolinium oxide composite coating and preparation method thereof
The invention provides a hafnium diboride-silicon carbide-tantalum disilicide-gadolinium oxide composite coating and a preparation method thereof, and belongs to the technical field of composite coatings. According to the invention, hafnium diboride-silicon carbide-tantalum disilicide-gadolinium oxide composite powder is used as a raw material of the coating, so that not only is relatively strong high-temperature oxidation resistance of hafnium diboride-silicon carbide of a traditional system maintained, but also crystal transformation of an oxide is stabilized and a glass phase is supplemented by using a tantalum disilicide adding phase; and the gadolinium oxide adding phase is used for improving the overall emissivity of the coating and enhancing the viscosity of the glass phase, so that the high-temperature oxygen corrosion resistance of the coating is further improved. The coating is prepared in an atmospheric plasma spraying mode, the method has the advantages of being simple in process, easy to control, high in production efficiency, low in cost and the like, and meanwhile the characteristics that the thickness of the coating is controllable, the defects of the coating are reduced, the compactness of the coating is improved, and the characteristics of a powder material are reserved to the maximum degree can be achieved.
本发明提供了一种二硼化铪‑碳化硅‑二硅化钽‑氧化钆复合涂层及其制备方法，属于复合涂层技术领域。本发明使用二硼化铪‑碳化硅‑二硅化钽‑氧化钆复合粉体作为涂层原料，不仅保持了传统体系二硼化铪‑碳化硅较强的高温抗氧化能力，还利用二硅化钽添加相来稳定氧化物的晶型转变以及补充玻璃相，利用氧化钆添加相来提高涂层整体发射率和增强玻璃相黏度的作用，进一步提高涂层的高温抗氧侵蚀的能力。本发明采用大气等离子喷涂的方式制备涂层，具有工艺简单、易于控制、生产效率高和成本低等优点，同时能够实现涂层厚度可控、减少涂层缺陷、提高涂层致密程度、最大程度保留粉体材料特性等特性。
Hafnium diboride-silicon carbide-tantalum disilicide-gadolinium oxide composite coating and preparation method thereof
一种二硼化铪-碳化硅-二硅化钽-氧化钆复合涂层及其制备方法
LIU YANBO (author) / XIE MINGSHAO (author) / LIU SHAOPU (author) / WANG YIFAN (author)
2022-03-22
Patent
Electronic Resource
Chinese
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