アルゴン水素ガス・タングステンアークによる金属蒸気(超微粒子)の生成に関する検討 : アークエネルギーによる金属超微粒子の製造技術に関する研究(第1報)(昭和60年度春季全国大会論文発表講演論文)

概要

論文の詳細を見る
A production technique of Ultra-fine Particles (UFP) has been investiagted to achieve a high generation rate of UFP. Ultra-fine Ni, Fe and Ti particles were generated in the Hydrogen-Argon mixed gas atmosphere at various current between Tungsten electrode and the bulk metal, and the generation rate of the UFP were measured. It is found that the shape of arc is changed by increasing the arc current abruptly and the generation rate of UFP is drastically reduced at the particular arc curret (transition current). At the lower arc current than the transition current the arc is concentrated on the anode spot, and the generation rate of UFP is very high. At the higher arc current than the transition current, the arc spreads on the bulk metal, and the genreation rate is very small. This transition current changes, depending on a concentration of hydrogen in atmospher, arc length and a kind of bulk metal.
社団法人溶接学会の論文
1985-02-05