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:
Jan. 13, 2004
Filed:
May. 29, 2002
Applicant:
Inventor:
William Victor Alcini, Ypsilanti, MI (US);
Assignee:
NTN Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F 3/12 ; B22F 3/26 ;
U.S. Cl.
CPC ...
B22F 3/12 ; B22F 3/26 ;
Abstract
A method for forming a copper-infiltrated iron powder metal article comprises compacting and sintering a predominately iron powder to form an iron-base matrix that contains between about 1 and 7 weight percent nickel and about 0.1 and 1.2 weight percent phosphorus. A copper metal is infiltrated into pores within the iron-base matrix. The product article comprises between about 2.0 and 23 weight percent copper infiltrant. Preferably, infiltration is carried out concurrently with sintering of the iron powder compact. The resulting product exhibits a particularly useful combination of mechanical properties, including high tensile strength and elongation.