【摘要】 通过热重实验和扫描电子显微镜等方法，研究了４种触头用银合金粉末的氧化性能及氧化后的组织结构。发现ＡｇＳｎＲＥ合金粉末氧化以后，在粉末表层形成一层纯银层，其组织结构理想；它的氧化性能最好，适于制备触头材料。ＡｇＳｎＲＥ合金粉末的优良氧化性能与其氧化后理想的组织结构有关，稀土元素可以降低合金粉末的氧化温度，其它影响作用有待于进一步研究。更多还原

【Abstract】 The oxidation properties and microstructures of oxidized silver alloy powder have been investigated by the methods of thermal weight experiment and scanning electron microscope. Ag Sn RE alloy powder has been oxidized completely at 610 ℃ within 60 min, with a pure silver layer forming around the powder surface. It is suitable for making electrical contact materials. The authors believe that the optimum oxidation properties of Ag Sn RE alloy powder is related to the fine microstructures of the oxidized powder.更多还原