Influence of sintering atmosphere on the corrosion behavior of the type 410 stainless steel prepared by MIM process (特集 自動車用焼結部品の更なる拡大) Influence of Sintering Atmosphere on the Corrosion Behavior of the Type 410 Stainless Steel Prepared by MIM Process

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Abstract

The mixtures of Type 410 stainless steel powder and the binder were injected into dumbbell type tensile test bars, and the green compacts thus obtained were subjected to pre-sintering at 873 K for 7.2 ks in the vacuum with various degrees of 0.1, 4 and 133 Pa followed by sintering at 1623 K for 7.2 ks under Ar gas flowing in the same vacuum of 0.1, 4 and 133 Pa. The Type 410 specimens sintered in vacuum of 0.1, 4, and 133 Pa were designated as Specimen 1, 2 and 3, respectively. In addition, the Type 410 specimen pre-sintered at 873 K for 7.2 ks in H<SUB>2</SUB> gas and sintered at 1623 K for 7.2 ks under Ar gas flowing in the same vacuum of 0.1 Pa was also prepared. It was referred to as Specimen 1 A. By using these four specimens mentioned above, the influence of sintering atmosphere on the corrosion behavior of the Type 410 stainless steel specimen prepared by MIM process was studied. The dissolution rate of Specimen 1 A is almost same as that of Specimen 1, while Specimen 2 and 3 showed 2.15 times and 4.31 times larger dissolution rate than Specimen 1. EIS test showed that the larger the sintering vacuum degree was applied, the more anodic reaction was accelerated and the less corrosion resistance was observed. Alternate wetting and drying test clarified that Specimen 1 A had the best corrosion resistance, while Specimen 3 had the worst, which agrees well with the results of polarization curve measurement and EIS test.

Journal

  • Journal of the Japan Society of Powder and Powder Metallurgy

    Journal of the Japan Society of Powder and Powder Metallurgy 54(7), 531-537, 2007-07-15

    Japan Society of Powder and Powder Metallurgy

References:  19

Cited by:  1

Codes

  • NII Article ID (NAID)
    10019563053
  • NII NACSIS-CAT ID (NCID)
    AN00222724
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    05328799
  • NDL Article ID
    8906320
  • NDL Source Classification
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL Call No.
    Z17-274
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
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