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Title: Method for the preparation of ferrous low carbon porous material

Patent ·
OSTI ID:1133442

A method for preparing a porous metal article using a powder metallurgy forming process is provided which eliminates the conventional steps associated with removing residual carbon. The method uses a feedstock that includes a ferrous metal powder and a polycarbonate binder. The polycarbonate binder can be removed by thermal decomposition after the metal article is formed without leaving a carbon residue.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Number(s):
8,734,715
Application Number:
13/006,141
OSTI ID:
1133442
Country of Publication:
United States
Language:
English

References (27)

Slip casting method patent October 1989
CO.sub.2 copolymer binder for forming ceramic bodies and a shaping process using the same patent November 1989
Method for manufacturing amorphous silica objects patent November 1991
Poly(propylene carbonate)-containing ceramic tape formulations and the green tapes resulting therefrom patent February 1992
Composition for producing ceramics patent February 1992
Process for thermal debinding and sintering of a workpiece patent November 1994
Polycarbonate binder resin and electrophotographic photoconductor containing the same patent January 1995
Powder ferrous metal compositions containing aluminum patent January 1999
Binder systems for powder metallurgy compacts patent May 2001
Method of making a functionally graded material patent June 2001
Removal of organic acid based binders from powder metallurgy compacts patent November 2001
Polymer gel molds patent April 2002
Process for producing powder metallurgy compacts free from binder contamination and compacts produced thereby patent April 2002
Binder system and method for particulate material with debind rate control additive patent April 2002
Atmospheric pressure method of thermally removing binder from porous compacts and binder-free compacts produced thereby patent November 2002
Process of making a metal matrix composite (MMC) component patent January 2003
Preparation of articles using metal injection molding patent December 2003
Binder for powder metallurgy, mixed powder for powder metallurgy and method for producing same patent July 2006
Method of producing a carbide sintered compact patent October 2007
Metal injection molded putter patent August 2011
Metal injection molding multiple dissimilar materials to form composite electric machine rotor and rotor sense parts patent-application April 2003
Feedstock composition and method of using same for powder metallurgy forming of reactive metals patent-application September 2005
Photosensitive member having anti-curl backing layer with lignin sulfonic acid doped polyaniline patent-application October 2005
Feedstock composition for powder metallurgy forming of reactive metals patent-application March 2007
Porous, degradable implant made by power molding patent-application July 2008
Sintered Body and Method for Producing the Same patent-application September 2008
Metal Injection Molding Process patent-application October 2011

Cited By (2)

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Related Subjects

36 MATERIALS SCIENCE