The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 17, 2016
Filed:
Mar. 11, 2013
Applicant:
Hitachi Powdered Metals Co., Ltd., Matsudo-shi, Chiba, JP;
Inventors:
Daisuke Fukae, Matsudo, JP;
Hideaki Kawata, Matsudo, JP;
Assignee:
HITACHI POWDERED METALS CO., LTD., Chiba, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 38/02 (2006.01); C22C 38/18 (2006.01); C22C 38/22 (2006.01); C22C 38/34 (2006.01); C22C 38/36 (2006.01); C22C 38/40 (2006.01); C22C 38/44 (2006.01); C22C 38/56 (2006.01); C22C 33/02 (2006.01); B22F 3/12 (2006.01); C22C 30/00 (2006.01); B22F 3/10 (2006.01); C22C 38/00 (2006.01);
U.S. Cl.
CPC ...
C22C 38/56 (2013.01); B22F 3/1007 (2013.01); C22C 30/00 (2013.01); C22C 33/0214 (2013.01); C22C 33/0285 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/34 (2013.01); C22C 38/40 (2013.01); C22C 38/44 (2013.01); B22F 3/12 (2013.01); B22F 2999/00 (2013.01);
Abstract
A sintered alloy has an overall composition consisting of, by mass %, 13.05 to 29.62% of Cr, 6.09 to 23.70% of Ni, 0.44 to 2.96% of Si, 0.2 to 1.0% of P, 0.6 to 3.0% of C, and the balance of Fe and inevitable impurities; a metallic structure in which carbides are precipitated and uniformly dispersed in an iron alloy matrix having dispersed pores; and a density of 6.8 to 7.4 Mg/m. The carbides include specific carbides having maximum diameter of 1 to 10 μm and area ratio of 90% or more with respect to the total carbides.