提出了火花等离子体放电(SPD)制备高温合金细粉新技术, 并设计了样机. 该方法与常用的高温合金制粉方法---等离 子旋转电极法和氩气雾化法的原理不同, 与之相比, 该方法冷速更快, 可制备粒度更细小的粉末, 且设备简单. 对2种高温合金进行制粉, 实验表明: 该方法制备的粉末粒度分布窄、球形度高、粉末颗粒表面光滑、看不到枝晶、 颗粒内部是球状晶凝固组织, 从而组织更均匀.
In the past three decades, the P/M superalloy in our country has a great progress. But in general, there is a big gap between domestic and foreign. The powders are the key. So a novel spark plasma discharge process , different from traditional process such as Plasma Rotating Electrode Process and Argon Gas Atomization, is proposed to produce Superalloy fine powders. Fine powders from wrought superalloy plate and a new P/M superalloy bar are studied.
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