Sintered ceramic shaped article wholly or predominantly of eutec

Details Sintered ceramic shaped article wholly or predominantly of eutec Sintered ceramic shaped article wholly or predominantly of eutec

Filed on

1984-01-09

Date issued

1986-06-17

Examiner

McCarthy, Helen M.

Patent Class

Compositions: ceramic

SubClass

Ceramic compositions

SubSubClass

Refractory

Other Related Categories

407119, 416241B, 82 1C, 501 87, 501 93, 501 94, 501 96, 501 97, 501104, 501105, 501120, 501127, 501152, 501153, C04B 3500, C04B 3548

Type

Patent

Status

active

Patent number

045956634

Description

ABSTRACT:
Ceramic shaped articles are disclosed which are formed of dense, non-metallic, mechanically resistant materials and contain eutectic constituents consisting of zirconium oxide, hafnium oxide and at least one other high-melting oxide and mixtures thereof. The composition exhibits excellent hardness, wear properties and bending strength. A method for preparing the articles is also disclosed wherein the appropriate mixture in a hypoeutectic, eutectic, or hypereutectic ratio is heated to its melting point, poured into a preheated mold and cooled.

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Levin, E. M. et al.-Phase Diagram for Ceramists-1975 Supplement-pub. by Am. Cer Soc., Columbus, Ohio, Index and Figures 4256, 4443-44-45; 4259, 4377-78, 227, 354, 2390, 4437, 579, 772, 4400.

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