为了制备耐热震和耐熔融金属腐蚀的金属陶瓷材料,通过机械合金化技术制备TiB2硬质相增强Ni基金属陶瓷粉末,将其超音速火焰喷涂在Q235钢表面制成TiB2-40Ni35A金属陶瓷涂层,并对其形貌、物相、孔隙率、结合强度、硬度、耐热震及耐熔融Al-12.07％Si腐蚀性能进行研究.结果表明:涂层组织致密、孔隙率仅为0.281％,物相主要为TiB2和Ni;涂层的结合强度为64 MPa,硬度为(446.7±85.6) HV3N;经过60次热震后,涂层中未发现明显的裂纹;经过60 h熔融Al-12.07％Si腐蚀后,涂层中未发现明显裂纹,仍与基体结合良好.
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