高融点金属の電子ビーム溶解

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書誌事項

タイトル別名
  • Electron-Beam Melting of Refractory Metals
  • コウユウテン キンゾク ノ デンシ ビーム ヨウカイ

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抄録

The object of this experiment is to investigate the electron-beam melting techniques and to study the properties of electron beam melted metals. The specification of the furnace used in this experiment is similar to that constructed by N.R.C. The operating conditions are as follows: Accelerating voltage, 10,000 V; electron beam current, 300∼750 mA; pressure, about 10−5 mmHg; inside dimension of water-cooled copper boat, 15×15×200 mm. Tungsten, tantalum, molybdenum, niobium, zirconium, etc. were successfully melted in this furnace. The extent of purification depends on the metal being melted. For instance, electron-beam melted tantalum is very ductile and is cold-rolled to total reduction of about 99% without annealing. On the other hand, tungsten or molybdenum ingots purified by this technique are apt to break at grain boundaries.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 25 (2), 124-128, 1961

    公益社団法人 日本金属学会

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