US2019256955A1PendingUtilityA1

Hard particle powder for sintered body

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Assignee: DAIDO STEEL CO LTDPriority: Feb 16, 2018Filed: Feb 8, 2019Published: Aug 22, 2019
Est. expiryFeb 16, 2038(~11.6 yrs left)· nominal 20-yr term from priority
Inventors:Iwane NagaseTomomi YamamotoTakahisa EndoSyunsuke KonoHiroki Hattori
F01L 2303/00C22C 30/00C22C 19/07F01L 3/02F01L 2800/18F01L 2810/02B22F 2999/00B22F 2998/10C22C 33/0278C22C 33/0207C22C 33/0285B22F 2302/40B22F 2301/35B22F 3/16B22F 1/0003B22F 1/09B22F 1/12C22C 19/052C22C 1/057
41
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Claims

Abstract

Provided is a hard particle powder for a sintered body, consisting of: 0.01≤C≤3.5 mass %, 0.5≤Si≤4.0 mass %, 0.1≤Mn≤10.0 mass %, 0.1≤Ni≤35.0 mass %, 0.1≤Cr≤40.0 mass %, 5.0≤Mo≤50.0 mass %, 0.1≤Fe≤30.0 mass %, and 0.01≤REM≤0.5 mass %, with a balance being Co and inevitable impurities.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A hard particle powder for a sintered body, consisting of:
 0.01≤C≤3.5 mass %,   0.5≤Si≤4.0 mass %,   0.1≤Mn≤10.0 mass %,   0.1≤Ni≤50.0 mass %,   0.1≤Cr≤40.0 mass %,   5.0≤Mo≤50.0 mass %,   0.1≤Fe≤30.0 mass %, and   0.01≤REM≤0.5 mass %,   with a balance being Co and inevitable impurities.   
     
     
         2 . The hard particle powder for a sintered body, according to  claim 1 , wherein the content of Mn is:
 4.0≤Mn≤7.0 mass %.   
     
     
         3 . The hard particle powder for a sintered body, according to  claim 1 , wherein the content of Ni is:
 0.2≤Ni≤30 mass %.   
     
     
         4 . The hard particle powder for a sintered body, according to  claim 1 , wherein the content of Fe is:
 2.0≤Fe≤20 mass %.   
     
     
         5 . A sintered body comprising:
 a hard particle powder,   a pure iron powder, and   a graphite powder,   wherein the hard particle powder consists of:
 0.01≤C≤3.5 mass %, 
 0.5≤Si≤4.0 mass %, 
 0.1≤Mn≤10.0 mass %, 
 0.1≤Ni≤35.0 mass %, 
 0.1≤Cr≤40.0 mass %, 
 5.0≤Mo≤50.0 mass %, 
 0.1≤Fe≤30.0 mass %, and 
 0.01≤REM≤0.5 mass %, 
 with a balance being Co and inevitable impurities. 
   
     
     
         6 . The sintered body according to  claim 5 , wherein the content of Mn is:
 4.0≤Mn≤7.0 mass %.   
     
     
         7 . The sintered body according to  claim 5 , wherein the content of Ni is:
 0.2≤Ni≤30 mass %.   
     
     
         8 . The sintered body according to  claim 5 , wherein the content of Fe is:
 2.0≤Fe≤20 mass %.

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