纯氧氛围下Ag-Sn-In合金粉末压坯烧结工艺探究

Investigation of Sintering Process of Ag-Sn-In Alloy Billet under pure oxygen atmosphere

摘要:

采用雾化法制备Ag-Sn-In合金粉末，通过讨论工艺参数（烧结温度、烧结保温时间、压坯压力）对AgSnO2电触头材料性能的影响，确定合理实验参数：压坯压力为200MPa，烧结温度为950℃，烧结保温时间为10h。对比纯氧氛围下烧结和传统烧结工艺的材料性能和显微组织，发现纯氧氛围下更有利于高温烧结，提高了烧结效率，改善烧结坯的烧结组织，提高了材料性能。

Abstract:

Ag-Sn-In alloy powders were prepared by atomization. By investigating the effect of the process parameters (sintering temperature , sintering time , compacting pressure ),we confirm the optimal sintering temperature , sintering time and compacting pressure is 950℃ for 10h and 200MPa. By the comparative study on properties and micro-structures of AgSnO2 electric contact materials prepared by the pure oxygen atmosphere sintering process and the traditional sintering process, The results indicate that a pure oxygen atmosphere is conducive to the high temperature sintering, which improves the efficiency of the sintering and eventually improves the micro-structure and performance of AgSnO2 electric contact materials.