Sintered bodies Al.sub.2 O.sub.3 -TiC-TiO.sub.2 continuing yttri

Details Sintered bodies Al.sub.2 O.sub.3 -TiC-TiO.sub.2 continuing yttri Sintered bodies Al.sub.2 O.sub.3 -TiC-TiO.sub.2 continuing yttri

1981-03-24

1982-10-26

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

51309, 264 65, 264 293, 501 93, 501127, 501134, 501135, 501152, 501153, C04B 3500, C04B 3510, C04B 3546, C04B 3556

Patent

active

043562728

ABSTRACT:
Sintered bodies having improved sinterability and toughness consist essentially of: (1) 100 parts by weight of titanium carbide, titanium oxide and aluminum oxide, the titanium carbide and titanium oxide accounting for 15 to 60 percent by weight and the aluminum oxide accounting for 85 to 40 percent by weight, the amount of titanium oxide relative to the titanium carbide and titanium oxide being 5 to 15 percent by weight, and (2) 0.039 to 1.575 parts by weight of yttrium. Sintering aids may include at least one of the oxides of magnesium, nickel, molybdenum, chromium, cobalt, iron and manganese.

REFERENCES:
patent: 3377176 (1968-04-01), Wolkodoff et al.
patent: 3565643 (1971-02-01), Bergna
patent: 3580708 (1971-05-01), Ogawa et al.
patent: 3711585 (1973-01-01), Muta et al.
patent: 3792142 (1974-02-01), Kobayashi et al.
patent: 3886254 (1975-05-01), Tanaka et al.
patent: 4022584 (1977-05-01), Rudy
patent: 4031177 (1977-06-01), Auriol et al.
patent: 4063908 (1977-12-01), Ogawa et al.
patent: 4217113 (1980-08-01), Suh et al.
patent: 4249914 (1981-02-01), Ogawa et al.

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