Abstract: A powder metallurgy corrosion and wear resistant tool steel article, and alloy thereof. The article is manufactured by hot isostatic compaction of nitrogen atomized, prealloyed high-chromium, high-vanadium, high-niobium powder particles. The alloy is characterized by very high wear and corrosion resistance, making it particularly useful for use in the manufacture of components for advanced bearing designs as well as machinery parts exposed to severe abrasive wear and corrosion conditions, as encountered, for example, in the plastic injection molding industry and food industry.
Type:
Grant
Filed:
November 13, 2006
Date of Patent:
October 30, 2007
Assignee:
Crucible Materials Corp.
Inventors:
Alojz Kajinic, Andrzej L. Wojcieszynski, Maria K. Sawford
Abstract: A clad article of a substrate of one powdered metal that is clad with a second dissimilar powdered metal. A separation layer may be provided between the substrate and the clad layer to separate these layers during consolidation and to facilitate bonding thereof. The consolidation operation may be performed by hot isostatic pressing of the powders within a deformable container.
Type:
Grant
Filed:
June 10, 2003
Date of Patent:
August 10, 2004
Assignee:
Crucible Materials Corp.
Inventors:
Frank J. Rizzo, Brian A. Hann, Joseph F. Perez
Abstract: A clad article of a substrate of one powdered metal that is clad with a second dissimilar powdered metal. A separation layer may be provided between the substrate and the clad layer to separate these layers during consolidation and to facilitate bonding thereof. The consolidation operation may be performed by hot isostatic pressing of the powders within a deformable container.
Type:
Application
Filed:
June 10, 2003
Publication date:
November 6, 2003
Applicant:
Crucible Materials Corp.
Inventors:
Frank J. Rizzo, Brian A. Hann, Joseph F. Perez
Abstract: Practice of this invention provides, at least, a method of making a hydrogen storage material comprising the steps of:
1. forming a molten mixture comprising nickel and at least one other transition metal element, the combination of which will form a TiNi alloy and including in said molten mixture from about 0.1 at. % to about 10 at. % of one or more elements which will form an alloy which is immiscible in the TiNi-type alloy; and
(b) cooling said molten mixture to form a solid alloy-system material by rapid solidification of said molten mixture at a cooling rate of at least 103° C. per second.
Type:
Grant
Filed:
July 17, 2000
Date of Patent:
December 31, 2002
Assignees:
Energy Conversion Devices, Inc., Crucible Materials Corp.
Inventors:
Jason Ting, Ulrike Habel, Michael W. Peretti, William B. Eisen, Rosa Young, Benjamin Chao, Baoquan Huang
Abstract: A silicon base binary alloy of prealloyed powder having less than 10% aluminum, excluding zero. The alloy may be in the form of gas atomized prealloyed powder, which powder may be consolidated to form an article. Preferably, the article is a sputtering target.
Type:
Grant
Filed:
April 11, 2001
Date of Patent:
November 5, 2002
Assignee:
Crucible Materials Corp.
Inventors:
Brian J. McTiernan, Michael W. Peretti, Jocelyne O. McGeever
Abstract: A method for producing an autogenous welded tubular metal article having a substantially uniform grain size, including the weld-affected area thereof. This is achieved by applying to the metal article a series of cold reduction and annealing operations that in combination render the grain size of the weld-affected area uniform with respect to the remainder of the cross-section of the article, and particular the visual appearance of the cross-section.
Abstract: A method for producing an autogenous welded tubular metal article having a substantially uniform grain size, including the weld-affected area thereof. This is achieved by applying to the metal article a series of cold reduction and annealing operations that in combination render the grain size of the weld-affected area uniform with respect to the remainder of the cross-section of the article, and particular the visual appearance of the cross-section.
Abstract: An austenitic stainless steel article, preferably in the form of a tubing. The article has a passivated surface layer, which in the case of a tubing is on the interior surface of the tubing. The passivated surface layer has an oxide component having Fe2O3 and Cr2O3 and a metal component of Fe with zero valence and Cr with zero valence. The ratio of the oxide component to the metal component is in excess of 8:1.
Abstract: A method for producing compacted, fully dense articles from atomized tool steel alloy particles by placing the particles in a deformable container, and isostatically pressing the particles at an elevated temperature to produce a precompact having an intermediate density. The precompact is heated to a temperature above the elevated temperature used to produce the precompact. The precompact is isostatically pressed to produce the fully-dense article.
Type:
Grant
Filed:
August 13, 1999
Date of Patent:
August 8, 2000
Assignee:
Crucible Materials Corp.
Inventors:
William B. Eisen, Walter Haswell, Kenneth J. Wojslaw, Jeryl K. Wright