| 摘要 |
PURPOSE:To efficiently form an Al alloy layer having a uniform composition and thickness, by passing a nitrided Ti wire through molten Al in vacuum or the like. CONSTITUTION:A Ti wire is nitrided to a certain depth from the outside. The nitrided Ti wire is passed through molten Al in vacuum, an inert gas or gaseous nitrogen to form an Al-Ti alloy layer on the surface of the wire. Since the m.p. of the Ti wire is increased by the nitriding, the nitrided Ti wire maintains its low temp. phase (alpha phase) even at >=about 1,000 deg.C without causing phase transformation. The Ti wire is hardened by the nitriding to increase the tensile strength, and the nitrided Ti wire is not broken even at >=1,000 deg.C, so the mass productivity is improved. |
