Valve metal compositions and method

Valve metal compositions and method

  • CN 1,149,296 C
  • Filed: 04/23/1998
  • Issued: 05/12/2004
  • Est. Priority Date: 04/26/1997
  • Status: Active Grant
First Claim
Patent Images

1. tantalum wire rod that contains nickel, wherein in described tantalum material the concentration of nickel or bigger near the surface of described tantalum wire rod, wherein the amount of nickel is 2-2000ppm.

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