摘要:
A treatment method for zirconium alloy, comprising performing a surface layer oxidation and removal treatment on a surface layer of zirconium alloy. The surface layer oxidation and removal treatment comprises: performing an oxidation treatment on the surface layer of the zirconium alloy to obtain an oxide surface layer (41), and then removing the oxide surface layer (41) to expose a metal substrate (30). The present application also comprises a method for fabricating a surface oxide ceramic layer (10) of zirconium alloy and a material for a medical implant.
摘要:
Tiegel zur Aufnahme von Salzbädern für das Borieren von Stählen zeigen dann hohe Standzeiten, wenn als Werkstoff Stähle mit 0,05 - 0,8 % Kohlenstoff, 0,8 - 2,5 % Silizium, 0,1 - 2,0 % Mangan, 0 - 1,5 % Aluminium, 6 - 30% Chrom, 4 - 39 % Nickel, Rest Eisen verwendet werden.
摘要:
The invention relates to a method of treating a liquid gallium or gallium alloy surface for prolonged use as a liquid mirror. The method of the invention comprises the steps of (a) contacting the surface of liquid gallium or gallium alloy with an aqueous solution of a halogenic acid to cause dissolution of any gallium oxide present on the surface, thereby obtaining an oxide-free liquid gallium or gallium alloy surface covered with a layer of the acid solution; (b) adding to the acid solution an aqueous solution of a surfactant present in an amount to form a single bimolecular layer of surfactant at an interface between the liquid gallium or gallium alloy and water; and (c) allowing a uniform passivating oxide layer to gradually form on the oxide-free liquid gallium or gallium alloy surface, the passivating oxide layer having surface irregularities smaller than 40 nm.
摘要:
Harte und kratzfeste Gegenstände aus Platin und Palladium bzw. deren Legierungen besitzen eine borhaltige Oberflächenschicht, die 20 bis 500 µm stark ist und 0,3 bis 1,5 Gew.% Bor im Metallgitter eingelagert enthält.