Oxide powder, sintered body, process for preparation thereof and

Details Oxide powder, sintered body, process for preparation thereof and Oxide powder, sintered body, process for preparation thereof and

1990-02-27

1991-12-10

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Refractory

20419229, 20429813, 423624, C04B 3550

Patent

active

050718002

ABSTRACT:
An indium oxide powder or indium oxide/tin oxide powder having an average primary particle diameter of 1 to 0.01 .mu.m, a BET surface area of 15 to 50 m.sup.2 /g, and a specific surface area of 2 to 5 m.sup.2 /g as determined from the particle diameter distribution. The mixed powder is prepared by coprecipitating an indium- and tin-containing salt from a solution containing indium and tin, calcining the salt, and pulverizing the calcined product using a specific vibrating pulverizer. A sintered body, prepared by sintering the indium oxide/tin oxide powder, has a density of at least 5.3 g/cm.sup.3, a specific resistance of 2.times.10.sup.-3 to 2.times.10.sup.-4 .OMEGA.-cm, and an average grain diameter of 5 to 15 .mu.m.

REFERENCES:
patent: 4647548 (1987-03-01), Klein
patent: 4690745 (1987-09-01), Klein

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