Sintering tray

Details Sintering tray Sintering tray

1997-04-14

1999-11-30

Jones, Deborah

Stock material or miscellaneous articles

Self-sustaining carbon mass or layer with impregnant or...

428212, 428216, 428220, 428457, 428472, 428688, 428689, 428698, 428701, 428702, 427 34, 4272552, 4272553, 427309, 264 62, 264 65, 264 66, B32B 900

Patent

active

059939702

ABSTRACT:
The present invention discloses a method of sintering of cemented carbide or cermet bodies lying on graphite trays. By using graphite trays coated with a covering layer of Y.sub.2 O.sub.3 containing .ltoreq.20 wt-% ZrO.sub.2, or corresponding volumetric amount of other refractory oxides, e.g., Al.sub.2 O.sub.3 or combinations thereof, with an average thickness of .gtoreq.10 .mu.m, the life of the trays between regrindings and recoatings can be largely extended.

REFERENCES:
patent: 4357382 (1982-11-01), Lambert et al.
patent: 4701384 (1987-10-01), Sarin et al.
patent: 4840854 (1989-06-01), Kojima et al.
patent: 4906431 (1990-03-01), Brundbjerg et al.
patent: 5418015 (1995-05-01), Jackson et al.
H. Kolaska et al., "Powder Metallurgy of Hardmetals", EPMA Lecture Series, Lecture 6, Sintering--Technical and Basic Principles, European Powder Metallurgy Association, Shrewsbury, UK, 1995, pp. 6/9-6/10.
Patent Abstract of Japan, abstract of JP 07-089769, Dialog Information Services Inc., File 351, Dialog Accession Number 010265860, Derwent Accession Number 95-167115/22, IBIDEN Co Ltd: "Tray for Sintering Cemented Carbide Chip", JP,A, 7089769, 950404, 9522 (Basic) Apr. 1995.

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