| 摘要 |
PROBLEM TO BE SOLVED: To improve the oxidation resistance of nickel hyperfine powder and to raise its oxidation starting temperature. SOLUTION: Nickel hyperfine powder and a solution of acetic acid are previously mixed, and after that, this mixture is brought into contact with an alcoholic solution containing an organic titanate to deposit an organic composite film containing TiO2 as a skeleton on the surface of nickel hyperfine powder. The content of Ti in the organic composite film is controlled to >=1,000 ppm to the nickel hyperfine powder. Further, in the case Ba is added by 1,500 to 12,000 ppm, its oxidation starting temperature rises as well.
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