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Metal surface heat protecting coating structure and preparation method and composite material thereof
The invention provides a metal surface heat protecting coating structure and a preparation method and composite material thereof. The metal surface heat protecting coating structure comprises a micro-arc oxidization transition layer and a ceramic coating, wherein the micro-arc oxidization transition layer and the ceramic coating are sequentially arranged on the surface of a metal base body from inside to outside. The ceramic coating comprises multiple subsidiary layers with the thermal expansion coefficient and the heat conductivity descending in a gradient manner from inside to outside. According to the heat protecting coating structure, the outer layer ceramic coating is designed into a multi-layer composite structure with the thermal expansion coefficient and the heat conductivity changing in a gradient manner, thus the thermal expansion difference between the coatings is reduced, the interface stress between a base body and the coatings is relieved, and the stability of the coatingoverall structure is improved. In addition, the micro-arc oxidization transition layer is guided between the metal base body and the ceramic coating, the stress between the metal base body and the ceramic coating can be relieved effectively, and meanwhile, the binding force between the ceramic coating and the metal base body is further increased.
本发明提供了一种金属表面热防护涂层结构及其制备方法、复合材料。所述金属表面热防护涂层结构包括由内而外依次设置于所述金属基体表面的微弧氧化过渡层和陶瓷涂层，且所述陶瓷涂层包含由内至外热膨胀系数和热导率呈梯度下降的多个子层。本发明提供的热防护涂层结构，外层陶瓷涂层设计成热膨胀系数和热导率呈梯度变化的多层复合结构，从而降低涂层之间的热膨胀差异，缓解基体与涂层之间的界面应力，增加涂层整体结构的稳定性。另外，在金属基体与陶瓷涂层之间引入微弧氧化过渡层，也能够有效缓解金属基体与陶瓷涂层之间的应力，同时还提高了陶瓷涂层与金属基体之间的结合力。
Metal surface heat protecting coating structure and preparation method and composite material thereof
The invention provides a metal surface heat protecting coating structure and a preparation method and composite material thereof. The metal surface heat protecting coating structure comprises a micro-arc oxidization transition layer and a ceramic coating, wherein the micro-arc oxidization transition layer and the ceramic coating are sequentially arranged on the surface of a metal base body from inside to outside. The ceramic coating comprises multiple subsidiary layers with the thermal expansion coefficient and the heat conductivity descending in a gradient manner from inside to outside. According to the heat protecting coating structure, the outer layer ceramic coating is designed into a multi-layer composite structure with the thermal expansion coefficient and the heat conductivity changing in a gradient manner, thus the thermal expansion difference between the coatings is reduced, the interface stress between a base body and the coatings is relieved, and the stability of the coatingoverall structure is improved. In addition, the micro-arc oxidization transition layer is guided between the metal base body and the ceramic coating, the stress between the metal base body and the ceramic coating can be relieved effectively, and meanwhile, the binding force between the ceramic coating and the metal base body is further increased.
本发明提供了一种金属表面热防护涂层结构及其制备方法、复合材料。所述金属表面热防护涂层结构包括由内而外依次设置于所述金属基体表面的微弧氧化过渡层和陶瓷涂层，且所述陶瓷涂层包含由内至外热膨胀系数和热导率呈梯度下降的多个子层。本发明提供的热防护涂层结构，外层陶瓷涂层设计成热膨胀系数和热导率呈梯度变化的多层复合结构，从而降低涂层之间的热膨胀差异，缓解基体与涂层之间的界面应力，增加涂层整体结构的稳定性。另外，在金属基体与陶瓷涂层之间引入微弧氧化过渡层，也能够有效缓解金属基体与陶瓷涂层之间的应力，同时还提高了陶瓷涂层与金属基体之间的结合力。
Metal surface heat protecting coating structure and preparation method and composite material thereof
一种金属表面热防护涂层结构及其制备方法、复合材料
WANG YAMING (author) / LIU ZHEMING (author) / ZOU YONGCHUN (author) / LI JUNLONG (author) / YU JIANGXIANG (author) / JIA DECHANG (author) / ZHOU YU (author)
2020-08-28
Patent
Electronic Resource
Chinese
IPC:
C23C
Beschichten metallischer Werkstoffe
,
COATING METALLIC MATERIAL
/
C04B
Kalk
,
LIME
/
C09D
Überzugsmittel, z.B. Anstrichstoffe, Firnisse oder Lacke
,
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS
/
C25D
Verfahren für die elektrolytische oder elektrophoretische Herstellung von Überzügen
,
PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS
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