退火态钽丝表面熔化机理的研究

Study on the Mechanism of Surface Melting for Annealing Tantalum Wire

通过电子探针微区分析,研究钽丝内部的金属杂质铁对退火态钽丝表面的影响。结果表明,钽丝中低熔点金属的存在能导致退火态钽丝的表面熔化,确定了钽丝用钽粉中的铁含量的技术指标,并通过严格的过程控制,降低了退火态钽丝表面熔化的程度。

The effect of internal iron impurity on surface of annealing states tantalum wire was investigated through analysis on electronic probe tiny area. The results show that the metal with a low melting point inside the annealing state tantalum wire can lead to melting on the surface of wire, the iron content in raw material, i.e. tantalum powder, is determined, so the melting on the surface of annealing state tantalum wire is reduced through a strict process control.