一、中空阴极等离子束熔炼 的基本原理 在熔炼稀有和难熔金属及它们的合金时,为了避免氧化及坩涡材料的污染而采用冷模熔炼技术,高真空电子束熔炼及真空自耗电极电弧熔炼得到了广泛应用。 六十年代又出现了一种利用中空阴极放电形成等离子束做热源的真空冷模熔炼技术[1、2]。它 First, the basic principles of hollow cathode plasma beam melting In the melting of rare and refractory metals and their alloys, in order to avoid oxidation and the contamination of the crucible material using cold-melt technology, high vacuum electron beam melting and vacuum consumable electrode Arc melting has been widely used. In the 1960s, a vacuum-cooled smelting technique using hollow cathode discharge to form a plasma source as a heat source also appeared [1,2]. it