Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Of inorganic materials
Patent
1991-09-16
1993-07-13
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Of inorganic materials
264 56, 264 63, 264104, B29C 6500, C04B 3500
Patent
active
052271021
ABSTRACT:
A method of manufacturing a conductive porous ceramic tube including the steps of mixing a powder of La or a La compound, Mn or a Mn compound and Sr or a Sr compound; firing the resulting mixture at a temperature of 1000.degree.-1400.degree. C. and synthesizing the compound of La.sub.1-x Sr.sub.x MnO.sub.3 (where 0<x.ltoreq.0.5); grinding the compound of La.sub.1-x Sr.sub.x MnO.sub.3 to form a powder of 2 to 10 .mu.m in a mean particle diameter; kneading 100 parts by weight of the powder with the addition of an organic binder, water and 1 to 8 parts by weight of a pore-forming agent; forming the kneaded material into a molded tube; drying the molded tube and thereafter firing the molded tube; at a temperature of 1300.degree.-1600.degree. C.
REFERENCES:
patent: 3957952 (1976-05-01), Naber et al.
patent: 4707311 (1987-11-01), Okazaki
patent: 4751152 (1988-06-01), Zymboly
patent: 4927577 (1990-05-01), Ohtaka et al.
"The Effect of Water Adsorption on (La.sub.1-x Sr.sub.x)MnO.sub.3 (0.1.ltoreq.x.ltoreq.0.5)", Yogyo-Kyokai-Shi 88 [9] 1980, H. Taguchi et al., pp. 566-570.
Fiorilla Christopher A.
NGK Insulators Ltd.
Silbaugh Jan H.
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