電子ストーレジリングのためのアルミニウム-ステンレス鋼接合ビームダクト

概要

論文の詳細を見る
Friction welding has been developed at KEK to join aluminium alloy vacuum chambers to stainless steel vacuum components of an electron storage ring. The stainless steel surface is electroplated with silver to a thickness of 10 μm before welding. Additional procedures such as complicated pre-treatment for electroplating, various heat treatment and various cleaning procedures are not required. Fabricated transitions up to 100 mm in diameter have been obtained. Some units have been tested for mechanical and vacuum leak properties as beam ducts. It has been found that the strength of the bonding plane is very strong and fracture of the tensile specimens occurs not at the bonded plane but at the aluminium alloy part, and that vacuum leak does not occur for heat cycles up to 200°C. Welds torerate thermal shock to liquid nitrogen temperature and remain leak-tight.
日本真空協会の論文