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以Ti—Si—Ni混合合金粉末为原料,利用激光熔敷技术,在高温、高强钛合金BT9表面制得了以金属间化合物Ti5Si3为强化相、以金属间化合物NiTi为基体的金属间化合物快速凝固高温抗氧化复合材料涂层。在1000℃恒温氧化50小时的试验条件下测试了涂层的抗氧化性及氧化动力学曲线,分析了复合材料涂层及氧化膜的显微组织结构及相组成。
Using Ti-Si-Ni alloy powder as raw material, laser welding technology was used to rapidly solidify the intermetallic compound based on the intermetallic compound NiTi on the surface of the high-temperature and high-strength titanium alloy BT9 by using intermetallic compound Ti5Si3 as reinforcing phase High temperature anti-oxidation composite coating. The oxidation and oxidation kinetics curves of the coating were tested under the conditions of 1000 ℃ for 50 hours. The microstructure and phase composition of the coating and the oxide film were analyzed.