Title:
Fe-BASED ALLOY HAVING EXCELLENT CORROSION PITTING RESISTANCE AND METHOD FOR PRODUCING THE SAME
Document Type and Number:
Japanese Patent JP2021091925
Kind Code:
A
Abstract:
To provide an Fe-based alloy having excellent corrosion pitting resistance, which has high corrosion pitting resistance to an aqueous solution having local corrosiveness mainly due to the existence of chloride ions, and a method for producing the same.SOLUTION: An Fe-based alloy having excellent corrosion pitting resistance, has a microstructure comprising a matrix and a dispersed phase, the matrix being Fe or Fe-based alloy, the dispersed phase being pure metal or alloy of at least one of Mo, V, Nb, W and Sn, or alloy with a total of Mo, V, Nb, W and Sn of 50 mass% or more. The dispersed phase has a volume ratio of 0.08% or more and 30% or less. Powder of pure metal or alloy to be the dispersed phase and powder of Fe or Fe-based alloy to be the matrix are uniformly mixed, followed by compression molding and sintering, resulting in the Fe-based alloy having excellent corrosion pitting resistance.SELECTED DRAWING: None
Inventors:
SAITO HARUKA
MUTO IZUMI
NISHIMOTO MASASHI
SUGAWARA MASARU
MUTO IZUMI
NISHIMOTO MASASHI
SUGAWARA MASARU
Application Number:
JP2019221778A
Publication Date:
June 17, 2021
Filing Date:
December 09, 2019
Export Citation:
Assignee:
UNIV TOHOKU
International Classes:
C22C38/00; B22F3/14; C22C33/02
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Foreign References:
| CN109848404A | 2019-06-07 |
Attorney, Agent or Firm:
Atsushi Suda
Shuji Kusunoki
Shuji Kusunoki