2O3摻雜,電接觸材料,燒結(jié),電阻率"/> 2O3粉為原料,采用機(jī)械合金法制備復(fù)合粉體。結(jié)合氧化法與粉末冶金工藝,對(duì)復(fù)合粉體進(jìn)行氧化、壓制、燒結(jié)。采用掃描電鏡(SEM)和能譜儀、硬度計(jì)、金相顯微鏡、金屬電導(dǎo)率測(cè)量?jī)x等對(duì)復(fù)合粉體氧化前后的形貌以及電接觸材料燒結(jié)前后的性能進(jìn)行表征。結(jié)果表明：燒結(jié)后,電接觸材料硬度較于燒結(jié)前明顯下降。同時(shí)電接觸材料隨Sn含量增大,電阻率升高,密度反而下降。在一定的La2O3(0wt.%、0.75wt.%、1.5wt.%、2.25wt.%、3wt.%)含量范圍內(nèi),La2O3摻雜量越高,密度越低。同時(shí)電接觸材料經(jīng)燒結(jié)后,隨La2O3含量增加,其電阻率先降后升,在La2O3含量為0.75wt.%時(shí),電接觸材料的電阻率最低。"/>

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La2O3摻雜AgSnO2電接觸材料的制備及性能研究
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浙江工業(yè)大學(xué)材料科學(xué)與工程學(xué)院,浙江工業(yè)大學(xué)材料科學(xué)與工程學(xué)院,浙江工業(yè)大學(xué)材料科學(xué)與工程學(xué)院,,浙江大學(xué)

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省自然科學(xué)基金(No.LQ17E010002)；浙江省科技計(jì)劃項(xiàng)目(No.2017C01051)


Preparation and Properties of La2O3 Doped AgSnO2Electrical Contact Materials
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College of Materials Science and Engineering,Zhejiang University of Technology,College of Materials Science and Engineering,Zhejiang University of Technology,College of Materials Science and Engineering,Zhejiang University of Technology,,

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    摘要:

    以Ag、Sn、La2O3粉為原料,采用機(jī)械合金法制備復(fù)合粉體。結(jié)合氧化法與粉末冶金工藝,對(duì)復(fù)合粉體進(jìn)行氧化、壓制、燒結(jié)。采用掃描電鏡(SEM)和能譜儀、硬度計(jì)、金相顯微鏡、金屬電導(dǎo)率測(cè)量?jī)x等對(duì)復(fù)合粉體氧化前后的形貌以及電接觸材料燒結(jié)前后的性能進(jìn)行表征。結(jié)果表明：燒結(jié)后,電接觸材料硬度較于燒結(jié)前明顯下降。同時(shí)電接觸材料隨Sn含量增大,電阻率升高,密度反而下降。在一定的La2O3(0wt.%、0.75wt.%、1.5wt.%、2.25wt.%、3wt.%)含量范圍內(nèi),La2O3摻雜量越高,密度越低。同時(shí)電接觸材料經(jīng)燒結(jié)后,隨La2O3含量增加,其電阻率先降后升,在La2O3含量為0.75wt.%時(shí),電接觸材料的電阻率最低。

    Abstract:

    Ag-SnO2-La2O3 composite powders were prepared by mechanical alloy method with Ag, Sn and La2O3 powder. The composite powders were oxidized, pressed and sintered by combining with oxidation and powder metallurgy processs. The morphology of the composite powders before and after oxidation and their electrical contact materials before and after sintering were characterized by scanning electron microscopy (SEM), energy dispersive spectrometer (EDS), X-ray diffractometer (XRD), Vickers hardness tester, metallographic microscope and metal conductivity meter. The results showed that with the increase of Sn content, the resistivity increased but the density decreased after sintering. And the hardness of electrical contact materials was decreased significantly after sintering. When the doping content of La2O3 ranged from 0wt.% up to 3wt.%, the higher the La2O3 doping content, the lower the density of the Ag-SnO2-La2O3 electrical contact material. And with the increase of La2O3 doping content, the resistivity decreased first and then increased for the sintered Ag-SnO2-La2O3 contacts. When the La2O3 doping content was 0.75wt.%, the resistivity of the sintered Ag-SnO2-La2O3 contacts was lowest.

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楊芳兒,唐建新,鄭曉華,張玲潔,沈濤. La2O3摻雜AgSnO2電接觸材料的制備及性能研究[J].稀有金屬材料與工程,2018,47(S2):182~187.[Yang Fanger, Tang Jianxin, Zheng Xiaohua, Zhang Lingjie, Shen Tao. Preparation and Properties of La2O3 Doped AgSnO2Electrical Contact Materials[J]. Rare Metal Materials and Engineering,2018,47(S2):182~187.]
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  • 收稿日期:2017-12-01
  • 最后修改日期:2017-12-11
  • 錄用日期:2018-02-01
  • 在線發(fā)布日期: 2018-11-01
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