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High-emissivity and high-entropy ceramic powder material and coating preparation method
The invention relates to the field of high-temperature protection materials and coatings, in particular to a high-emissivity and high-entropy ceramic powder material and a coating preparation method, which are beneficial to efficient heat dissipation so as to avoid overtemperature failure of a base material. A high-emissivity and high-entropy ceramic powder material with the component of CraNibTixSmyAl(1-a-b-x-y)O(3+x-b)/2 (the subscript is the atomic ratio) is designed through the high-entropy idea, spraying powder is prepared through the method of solid-phase sintering and mechanical crushing, and the high-emissivity coating is prepared through atmosphere plasma spraying. The temperature resistance of the high-emissivity coating of the component system exceeds 1100 DEG C, the phenomena of coating stripping, peeling and the like are avoided after the coating is circulated for more than 30 times under the conditions of 1150 DEG C*5 min and water quenching, the emissivity at the room temperature reaches 0.96, and the emissivity at the 1200 DEG C reaches 0.92.
本发明涉及高温防护材料及涂层领域，具体为一种高发射率高熵陶瓷粉体材料及涂层制备方法，有助于高效散热以避免基体材料超温失效。通过高熵化思想设计一种成分为CraNibTixSmyAl(1‑a‑b‑x‑y)O(3+x‑b)/2(下标为原子比)的高发射率高熵陶瓷粉体材料，采用“固相烧结+机械破碎”的方法制备喷涂粉末，并利用大气等离子喷涂制备高发射率涂层。该成分体系高发射率涂层耐温能力超过1100℃，在1150℃×5min、水淬条件下循环30次以上，无涂层剥落、起皮等现象，室温条件发射率高达0.96，1200℃发射率达到0.92。
High-emissivity and high-entropy ceramic powder material and coating preparation method
The invention relates to the field of high-temperature protection materials and coatings, in particular to a high-emissivity and high-entropy ceramic powder material and a coating preparation method, which are beneficial to efficient heat dissipation so as to avoid overtemperature failure of a base material. A high-emissivity and high-entropy ceramic powder material with the component of CraNibTixSmyAl(1-a-b-x-y)O(3+x-b)/2 (the subscript is the atomic ratio) is designed through the high-entropy idea, spraying powder is prepared through the method of solid-phase sintering and mechanical crushing, and the high-emissivity coating is prepared through atmosphere plasma spraying. The temperature resistance of the high-emissivity coating of the component system exceeds 1100 DEG C, the phenomena of coating stripping, peeling and the like are avoided after the coating is circulated for more than 30 times under the conditions of 1150 DEG C*5 min and water quenching, the emissivity at the room temperature reaches 0.96, and the emissivity at the 1200 DEG C reaches 0.92.
本发明涉及高温防护材料及涂层领域，具体为一种高发射率高熵陶瓷粉体材料及涂层制备方法，有助于高效散热以避免基体材料超温失效。通过高熵化思想设计一种成分为CraNibTixSmyAl(1‑a‑b‑x‑y)O(3+x‑b)/2(下标为原子比)的高发射率高熵陶瓷粉体材料，采用“固相烧结+机械破碎”的方法制备喷涂粉末，并利用大气等离子喷涂制备高发射率涂层。该成分体系高发射率涂层耐温能力超过1100℃，在1150℃×5min、水淬条件下循环30次以上，无涂层剥落、起皮等现象，室温条件发射率高达0.96，1200℃发射率达到0.92。
High-emissivity and high-entropy ceramic powder material and coating preparation method
一种高发射率高熵陶瓷粉体材料及涂层制备方法
GAO MINGHAO (author) / LUAN SHENGJIA (author) / WANG YUANHONG (author) / ZHOU TIANYI (author) / ZHU HONGBO (author) / CHANG HUI (author) / XU NA (author) / ZHANG JIA (author) / HOU WANLIANG (author) / CHANG XINCHUN (author)
2021-05-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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