Norrosion resistant sintered body having excellent ductility, sensor ring using the same, and engagement part using the same
AssigneesDaido Tokushuko Kabushiki Kaisha, Sumitomo Electric Industries, Ltd.
InventorsTakayoshi Shimizu, Tetsuya Kondoh
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Abstract
A corrosion resistant sintered body having excellent ductility is provided by sintering, at temperatures of not less than 1050 to less than 1300.degree. C., powders which are composed by adding metal compound of B to and mixing with powders of ferrite stainless steel containing C.ltoreq.0.1 wt %, Si.ltoreq.3.0 wt %, Mn.ltoreq.0.30 wt %, Ni.ltoreq.2.0%, 11 wt %.ltoreq.Cr.ltoreq.22 wt %, Mo.ltoreq.3.0%, and the rest being substantially Fe, at an amount of B in the mixed powders being between more than 0.03 wt % and less than 0.2 wt % based on the weight of the powder.
Claims20
A corrosion resistant sintered body having excellent ductility, obtained by the process comprising the steps of:
- sintering a powder at a sintering temperature from not less than 1050.degree. C. to less than 1300.degree. C.;
- wherein said powder comprising a ferrite stainless steel powder containing 11 to 22 wt % of Cr and a metal compound of B, the amount of B being from not less than 0.03 to less than 0.2 wt % based on the weight of said powder.
A corrosion resistant sintered body having excellent ductility obtaining by a process comprising the step of sintering a ferrite stainless steel powder containing 11 to 22% of Cr and metal compound of B, the amount of B being from not less than 0.03 to less than 0.2 wt % based on the weight of said powder;
- wherein pores of said sintered body is rounded and the number of open pores is small.
Dependencies are inferred from the claim text.