Title:
0.5at%のハフニウムを含有し、その一部がイオン注入された高クロムフェライト鋼
Document Type and Number:
Japanese Patent JP2007530795
Kind Code:
A
Abstract:
The application relates to the problem of improving the corrosion resistance and creep properties of standard Cr-steels like E911 (table 1) at high temperatures. To solve this problem, a method of adding up to 0.5 atomic % Hf both during casting or molding and by ion implantation is provided. The addition of Hf improves the corrosion resistance and creep properties inter alia, as it forms a finely distributed stable second phase and as the harmful M23C6 disappears, because all carbon is taken by Hf to form HfC.
Inventors:
Roy Faulkner
Application Number:
JP2007505636A
Publication Date:
November 01, 2007
Filing Date:
April 01, 2005
Export Citation:
Assignee:
Loughborough University Enterprises Limited
International Classes:
C22C38/00; C21D6/00; C22C33/06; C22C38/18; C22C38/22; C22C38/24; C22C38/26; C23C14/48
Attorney, Agent or Firm:
Axis International Patent Business Corporation