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氧化物添加劑對(duì)Ag-SnO2電接觸材料抗蠕變性能的影響
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石家莊鐵道大學(xué)

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O341

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河北省教育廳重點(diǎn)項(xiàng)目(項(xiàng)目號(hào)ZD2018075)


Effect of Oxide Additives on the Creep Resistance of Ag-SnO2 Contact Materials
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1.Shijiazhuang Tiedao University,HeBei Shijiazhuang 050043Provincial Collaborative Innovation Center of Mechanics of Intelligent Materials in Hebei;2.Hebei Key Laboratory of Mechanics of Intelligent Materials and Structures

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    摘要:

    為研究氧化物添加劑對(duì)Ag基電接觸材料抗蠕變性能的影響，用粉末冶金法制備了分別含有CuO、WO3和In2O3的Ag-SnO2材料。常溫下對(duì)拉伸試樣進(jìn)行蠕變實(shí)驗(yàn)，獲得蠕變特征曲線及相關(guān)參數(shù)，構(gòu)建了Ag-SnO2材料的蠕變本構(gòu)方程。借助掃描電子顯微鏡（SEM）對(duì)拉伸斷口形貌進(jìn)行分析，用ABAQUS有限元軟件進(jìn)一步對(duì)蠕變行為進(jìn)行模擬。結(jié)果表明：由于SnO2與Ag基體間的界面強(qiáng)度得到提高，氧化物添加劑可顯著增強(qiáng)Ag-SnO2電接觸材料的抗蠕變性能，尤其是CuO添加劑的效果最佳。模擬結(jié)果與通過實(shí)驗(yàn)獲得的蠕變數(shù)據(jù)基本吻合，誤差小于3%。研究結(jié)果對(duì)預(yù)測Ag基電接觸材料的蠕變行為及改善力學(xué)性能均具有一定參考價(jià)值。

    Abstract:

    To investigate the effect of oxide additives on the creep resistance of Ag based electrical contact materials, Ag-SnO2 contact materials with CuO, WO3 and In2O3 were prepared by powder metallurgy. The creep tests were performed on the tensile specimen at room temperature, and the creep characteristic curves and related parameters were obtained. The creep constitutive equation of the Ag-SnO2 contact materials was constructed. The fracture morphology was analyzed using a scanning electron microscope (SEM). The creep behavior was further simulated by ABAQUS finite element software. The results showed that oxide additives can significantly enhanced the creep resistance of the Ag-SnO2 electrical contact materials due to the improvement of interfacial strength, especially CuO additive has the best effect. It is showed that the simulation results were basically consistent with the experimental data and the error was less than 3 percent. The obtained results are of great reference value for predicting the creep behavior of Ag-based contact material and improving the mechanical properties.

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楊天陽,馬園園,張小龍,馮文杰,李桂景.氧化物添加劑對(duì)Ag-SnO2電接觸材料抗蠕變性能的影響[J].稀有金屬材料與工程,2021,50(4):1441~1447.[Yang TianYang, Ma YuanYuan, Zhang XiaoLong, Feng WenJie, Li GuiJing. Effect of Oxide Additives on the Creep Resistance of Ag-SnO2 Contact Materials[J]. Rare Metal Materials and Engineering,2021,50(4):1441~1447.]
DOI：10.12442/j. issn.1002-185X.20200397

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  • 收稿日期:2020-06-07
  • 最后修改日期:2020-06-29
  • 錄用日期:2020-07-21
  • 在線發(fā)布日期: 2021-05-08
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