Process for the production of lanthanum chromite films by plasma

Details Process for the production of lanthanum chromite films by plasma Process for the production of lanthanum chromite films by plasma

1992-12-02

1994-07-26

Beck, Shrive P.

Coating processes

Spray coating utilizing flame or plasma heat

Metal oxide containing coating

427115, 4271263, 4273762, B05D 108, B05D 512

Patent

active

053325982

ABSTRACT:
A process for the production of a lanthanum chromite film, including the steps of preparing a plasma spray powder by mixing 1-15 parts by weight of powdery chromium oxide powder to 100 parts by weight of powdery lanthanum chromite, this lanthanum chromite having a composition ratio of A sites to B-sites being in a range of 1:1 to 1:0.9, forming a plasma sprayed film by plasma spraying the plasma spray powder onto a substrate, and forming the lanthanum chromite film by heat treating the resulting plasma sprayed film. The plasma spray powder may be produced by preparing a mixed powder by adding 1-15 parts by weight of powdery chromium oxide to 100 parts by weight of a synthesis powder capable of producing the lanthanum chromite film by heat treatment, the synthesis powder containing at least chromium oxide and lanthanum chromite and the lanthanum chromite film having a composition ratio of A-sites to B-sites being in a range of 1:1 to 1:0.9, obtaining a synthesized product by heating the mixed powder, and granulating the synthesized product.

REFERENCES:
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patent: 4614628 (1986-09-01), Hsu et al.
patent: 4749632 (1988-06-01), Flandermeyer et al.
patent: 4988538 (1991-01-01), Horvei et al.
patent: 5143751 (1992-09-01), Richards et al.
Sunshine Journal, 1981, vol. 2, No. 1, pp. 26-37 (no month date).
The 32nd Battery Symposium in Japan, Sep. 17-19, 1991, Kyoto.
Patent Abstracts of Japan, vol. 015, No. 062 (E-1033) 28 Apr. 1989 & JP-A-22 88 160 (Fujikura) 28 Nov. 1990.

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