| 摘要 |
1,239,863. Plating zirconium. EUROPEAN ATOMIC ENERGY COMMUNITY. May 2, 1969 [May 13, 1968], No. 22591/69. Heading C7F. Zirconium and its alloys are plated by chemical displacement, the workpiece being first pickled and then immersed in a bath of molten CuCl 2 in an inert atmosphere at 430‹ -600‹C. for 10 seconds to 20 minutes to obtain a copper coating. Residual salts adhering to the coated surface may be removed by immersion in a LiCl-KCl eutectic at 500‹C, for 8-10 seconds, followed by water rinsing. The Cu coating may be used as a base for electro-plated Ni, Au, Ag, Cr, Cd, Pb, As, or Sb, or as a base for coatings of Nb, Mo, or W deposited from their halides in the gaseous phase. |
