【摘要】 采用超声气体雾化技术制备了ＮｉＣｏＣｒＡＩＴａＹ合金粉末，结果表明： 该合金粉末呈球形，平均粒度为３２μｍ，颗粒组织由α－Ｃｒ＋γ双相组成；采用真空等 离子喷涂方法制备的该合金粉末涂层，具有良好的抗高温氧化性能，１０００℃和 １１００℃，２００小时的静态氧化增重分别为０．３ｍｇ／ｃｍ２和０．３５ｍｇ／ｃｍ２。更多还原

【Abstract】 In this paper,NiCoCrAITaY alloy powders have been produced by means of ultrasonic gas atomization tech- niqlue.The results showed that the powder microstructure is composed of α-Cr and y phases and the mean size of powders is 32 μm with a nearly spherical morphology.The overlay coating prepared by VPS exhibits a good high temperature oxidation resistance.The mass gain of static oxidation after exposed at 1000 and 1100℃ for 200hrs is 0.3 and 0.35mg/m2,respectively.更多还原