Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Making composite or hollow article
Patent
1996-10-15
1998-12-08
Mai, Ngoclan
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Making composite or hollow article
419 9, 419 11, 419 12, 419 13, 419 14, B22F 700
Patent
active
058483489
ABSTRACT:
The present disclosure is directed to the fabrication of a highly wear layer either directly upon an article or tool support structure or body, or as a wear resistant insert or element which is subsequently attached to the tool body. The wear material is formed by sintering particulate material using the absorption of microwave energy as a means of heating. The disclosure also encompasses post manufacture annealing, using heating by microwave radiation, of both highly wear resistant inserts and composite articles which consist of a wear resistant layer and a body. The wear resistant material, whether fabricated directly upon an article or fabricated separately and subsequently affixed to an article, provides an abrasive wear surface and greatly increases the life of the article. Microwave sintered wear resistant surfaces for mills, drills, grinders, brakes, bearings, saw blades and other articles and assemblies are disclosed.
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Bonding of WC with an Iron Aluminide (FeAl) Intermetallic, Joachim H. Schneibel and Ramesh Subramanian, Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN--To be published in 1996 World Congress on Powder Metallurgy & Particulate Materials Jun. 16-21, Washington, D.C., pp. 1-9.
Iron Aluminide-Bonded Ceramics, Joachim H. Schneibel, Metals and Ceramics Division, Oak Ridge Natinal Laboratory, Oak Ridge, TN, undated.
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