Title:
VALVE SEAT MADE OF IRON-BASED SINTERED ALLOY
Document Type and Number:
WIPO Patent Application WO/2022/185758
Kind Code:
A1
Abstract:
Provided is a valve seat that is made of an iron-based sintered alloy and that has excellent abrasion resistance in a wide temperature range from a low temperature to a high temperature in a corrosive environment. The valve seat made of iron-based sintered alloy according to the present invention is characterized by comprising a base phase, and first hard particles and second hard particles that have component compositions different from each other and that are dispersed in the base phase. The valve seat is characterized in that the base phase contains 0.1-5.0 mass% of W, the first hard particles are Fe-Mo alloy particles, and the second hard particles are high Cr-containing Fe-based alloy particles that contain 10 mass% or more of Cr.
Inventors:
YANAGIMOTO AKIKO (JP)
Application Number:
PCT/JP2022/001665
Publication Date:
September 09, 2022
Filing Date:
January 18, 2022
Export Citation:
Assignee:
KK RIKEN (JP)
International Classes:
B22F5/00; C22C27/04; C22C33/02; C22C38/00; C22C38/46; C22C38/56; F01L3/02
Foreign References:
| JPH06172942A | 1994-06-21 | |||
| JP2015178650A | 2015-10-08 |
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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