陸 堯3， 項(xiàng) 兢3， 翁 桅3
(1.上海大學(xué) 材料科學(xué)與工程學(xué)院， 上海 200072；
2. 華東師范大學(xué) 物理系， 上海 200062；
3. 上海電器科學(xué)研究所， 上海 200063)
摘 要: 采用化學(xué)鍍技術(shù)，在高能球磨所得納米石墨粉上包覆銀， 制得納米晶銀/石墨包覆粉體，經(jīng)冷壓、 燒結(jié)、 復(fù)壓工序， 制備了AgC5觸頭材料。采用此新工藝制備的觸頭材料與常規(guī)工藝制得的相比， 在力學(xué)和物理性能等方面有了較大的提高。 分?jǐn)鄬?shí)驗(yàn)表明： 將納米技術(shù)應(yīng)用到銀/石墨觸頭材料的制備中， 使材料的抗電弧磨損性能有了較大的改善。
關(guān)鍵字: 化學(xué)包覆；高能球磨； 納米石墨；銀/石墨觸頭材料；抗電弧磨損
ZHU Li-hui1, LU Yao3, XIANG Jing3, WENG Wei3
（1. School of materials science and engineering,
Shanghai University, Shanghai 200072, China；
2. Department of physics, East China Normal University,
Shanghai 200062, China;
3. Shanghai Electrical Apparatus Research Institute,Shanghai 200063, China）
Abstract:Using electroless plating, the nanocrystalline graphite powder coated with silver was prepared from nano-graphite obtained by high-energy ball milling. By pressing, sintering and re-pressing, the AgC5 electrical contact material was fabricated. The electrical contact material prepared by the novel process has great improvement in mechanical, physical properties. The make-break test shows that AgC5 contact material fabricated by nano-phase coating possesses good resistance against arc erosion.
Key words: chemical coating； high-energy ball milling； nano-graphite； silver/graphite contact material; resistance against arce
