Ceramic materials for high-speed cutting

Abrasive tool making process – material – or composition – With inorganic material – Metal or metal oxide

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501105, 501153, C04B 3510

Patent

active

042920493

ABSTRACT:
Ceramic materials for use in high-speed cutting, comprising Al.sub.2 O.sub.3, ZrO.sub.2 and at least one alkali earth oxide selected from CaO and MgO, the weight ratio of Al.sub.2 O.sub.3 /ZrO.sub.2 is in the range from about 95/5 to 99.5/0.5, the molar ratio of (CaO+MgO)/ZrO.sub.2 is in the range from about 0.05/1 to 0.2/1, and at least 50% of the ZrO.sub.2 in the material is cubic ZrO.sub.2, and the remainder is monoclinic ZrO.sub.2.

REFERENCES:
patent: 3862846 (1975-01-01), Smoak et al.
patent: 3871891 (1975-03-01), Schuller et al.

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