US 6,805,835 B2Granted

Process for sintering powder metal components

AssigneeThe Penn State Research Foundation

InventorsRustum Roy, Dinesh K. Agrawal, Jiping Cheng

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Abstract

A process for sintering green powder metal, metal alloy or metal composition parts employing microwave energy is described.

Claims4

Dependent claims

A method of sintering comprising subjecting a body comprising Fe+Ni(2%)+Graphite(0.8%) to microwave energy for between 10 and 30 minutes at a temperature between 1100° C. and 1250° C., wherein the microwave energy has a frequency between 0.5 GHz and 10 GHz.

Dependencies are inferred from the claim text.

Facts

Application: 09/769,839Filed 25 Jan 2001 · continuation
Priority: 25 Nov 1997
Published: US 2001/0048887 A16 Dec 2001
Granted: 19 Oct 2004
Term ends: Not estimatedThe source records don’t support an estimate.

Classification2 codes

B22F 3/105
Sintering only: by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
B22F
Working metallic powder

Family

Application60/066,947Us provisional application · filed 25 Nov 1997
Application09/185,246Parent of this continuation · filed 3 Nov 1998
US 2001/0048887 A1Pre-grant publication · published 6 Dec 2001
US 6,183,689 B2Parent of this continuation
US 6,805,835 B2This patent

From the US filing history. Foreign family members aren’t listed.

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