采用化恘包覆和粉末惀金法制备了新型Ag-CuO-La2O3电接触材料，悁究了新材料的微观结构和性能。结果表明，细小的 CuO 和 La2O3颗粒高度弥散地分布于银基体中，新材料的密度为9.77 g·cm-3，电阻率为2.36μ?·cm，显微硬度(Hv0.2)为113。与相同工惤制备的Ag-SnO2传统电接触材料比较，新材料具有更好的室温加工性能、更优异的耐电弧侵蚀能力惣及更长的电寿命。Ag-CuO-La2O3新材料有望成为惊种替代传统Ag-SnO2的新型电接触材料。
A new electrical contact material, Ag-CuO-La2O3, was produced by chemical coating and powder metallurgy method, and its microstructure and performance were investigated. The results show that fine oxides of CuO and La2O3 have a uniform distribution in the silver matrix. Its density, resistivity and micro-hardness(Hv0.2) is 9.77 g·cm-3, 2.36 μ?·cm and 113 respectively. Compared with convenient Ag-SnO2 electrical contact materials prepared by the same process, the new material has superior room temperature processing performance, better ability of anti-arc erosion and longer service life. The Ag-CuO-La2O3 material may be substitute for Ag-SnO2 as a new electrical contact material.
参考文献
| [1] | Wang J B;Zhang Y;Yang M G et al.Observation of arc discharging process of nanocomposite Ag-SnO2 and La-doped Ag-SnO2 contact with a high-speed camera[J].MATERIALS SCIENCE & ENGINEERING B,2006,131(1):230-234. |
| [2] | ?osovi?V;?osovi?A;Talijan N et al.Improving dispersion of SnO2 nanoparticles in Ag-SnO2 electrical contact materials using template method[J].Journal of Alloys and Compounds,2013,567:33-39. |
| [3] | 乔秀清,申乾宏,张玲洁,陈乐生,樊先平,杨辉.Ag/SnO2电接触材料的制备新方法[J].稀有金属材料与工程,2014(11):2614-2618. |
| [4] | Findik F;Uzun H .Microstructure,hardness and electrical properties of silver-based refractory contact materials[J].Materials and Design,2003,24(7):489-492. |
| [5] | 王松,郑婷婷,谢明,王亚雄,张吉明.AgSnO2电接触材料内氧化热力学与恒温氧化行为[J].稀有金属材料与工程,2014(04):796-798. |
| [6] | Wang X H;Yang H;Chen M et al.Fabrication and arc erosion behaviors of AgTiB2 contact materials[J].Powder Technology,2014,256:20-24. |
| [7] | Xu C H;Yi D Q;Wu C P et al.Microstructures and properties of silver-based contact material fabricated by hot extrusion of internal oxidized Ag-Sn-Sb alloy powders[J].Materials Science and Engineering A,2012,538:202-209. |
| [8] | Liu X M;Wu S L;Paul K et al.Effects of coating process on the characteristics of Ag-SnO2 contact materials[J].Materials Chemistry and Physics,2006,98(2-3):477-480. |
| [9] | J. Swingler,A. Sumption.Arc erosion of AgSnO2 electrical contacts at different stages of a break operation[J].稀有金属（英文版）,2010(03):248-254. |
| [10] | Lungu M;Gavriliu S;Canta T et al.AgSnO2 sintered electrical contacts with ultrafine and uniformly dispersed microstructure[J].JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS,2006,8(2):576-581. |
| [11] | Song Chen,Wei-Ming Guan,Kun-Hua Zhang,Zhi-Long Tan,Ming Xie.Experiment and finite element method analysis mass erosion and transfer of Ag/La2NiO4-based electrical contacts during operation[J].稀有金属（英文版）,2013(01):93-99. |
| [12] | CHEN Xiaohua,JIA Chengchang,LIU Xiangbing.Effects of silver powder particle size on the microstructure and properties of Ag-Yb2O3 electrical contact materials prepared by spark plasma sintering[J].稀有金属（英文版）,2010(04):366-370. |
| [13] | P.Verma,O.P.Pandey,A.Verma.Influence of Metal Oxides on the Arc Erosion Behaviour of Silver Metal Oxides Electrical Contact Materials[J].材料科学技术学报(英文版),2004(01):49-52. |
| [14] | 周允红,周晓龙,陶麒鹦,张浩.AgMeO电触头材料的研究进展[J].贵金属,2014(z1):100-107. |
| [15] | WANG Jing-qin,WANG Hai-tao,WEN Ming,ZHU Yan-cai.Testing results analysis of contact materials' electrical contact performance[J].浙江大学学报A（英文版）,2007(03):459-463. |
| [16] | ZHENG Ji,LI Songlin,DOU Fuqi,LI Tonghui.Preparation and microstructure characterization of a nano-sized Ti4+-doped AgSnO2 electrical contact material[J].稀有金属（英文版）,2009(01):19-23. |
| [17] | LU Jianguo,WANG Jingqin,ZHAO Jingying,WEN Ming,WANG Baozhu,WANG Xiaohong.A new contact material——Ag/SnO2-La2O3-Bi2O3[J].稀有金属(英文版),2002(04):289-293. |
| [18] | 王海涛,王景芹,杜江,孟凡青.稀土对AgSnO2触头材料润湿性影响[J].稀有金属材料与工程,2014(08):1846-1849. |
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