"WO 2005/023461 A1 (03/17/05) Sumitomo Metal Mining Co., Ltd." "Kato, T.; Okada, S.; Futaki, S." NICKEL POWDER AND PROCESS FOR PRODUCING THE SAME "Inexpensive nickel powder with excellent weatherability and a low electric resistance when compounded with resin, which is suitable as conductive particles for conductive pastes and resins. The nickel powder is produced from aqueous solution and contains 1-20 wt% of cobalt. 1-40 wt% of cobalt may be contained only in the surface layer of nickel powder."
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