CERAMIC AND PROCESS FOR THE CONTINUOUS SINTERING THEREOF

WIPO Patent Application WO2000002829

A3

A continuous process for the manufacture of a ceramic sintered comopact wherein the process comprises the steps of: forming a green compact from a powder mixture comprising a first component comprising compounds which contain elements of silicon, aluminum, oxygen and nitrogen; and the powder mixture further comprising a second component comprising a compound of at least one element selected from the group consisting of yttrium, scandium, cerium, lanthanum and the metals of the lanthanide series, and the second component comprising between 0.1 and 10 weight percent of the powder mixture; heat treating the green compact wherein the heat treatment comprises continously passing the green compact through at least one heating zone so as to produce a sintered compact.

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YECKLEY RUSSELL L

PCT/US1999/014231

August 17, 2000

June 23, 1999

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KENNAMETAL INC (US)

C04B35/117; C04B35/119; C04B35/597; C04B35/599; C04B35/64; C04B41/45; C04B41/50; C04B41/81; C04B41/87; F27B9/24; F27D3/12; (IPC1-7): C04B35/58; F27B9/24; F27D3/12

WO1982003072A1	1982-09-16
WO1998023554A1	1998-06-04

US5648042A	1997-07-15
US5370716A	1994-12-06
EP0796828A2	1997-09-24
US5382273A	1995-01-17
US4563433A	1986-01-07
US5525134A	1996-06-11
US5413972A	1995-05-09
US5227346A	1993-07-13

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