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Bi2Sn2O7摻雜對(duì)Ag/SnO2材料界面潤(rùn)濕性及物理性能的影響
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作者單位:

1.浙江工業(yè)大學(xué);2.浙江大學(xué)

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中圖分類號(hào):

TM501.3

基金項(xiàng)目:

浙江省重點(diǎn)研發(fā)計(jì)劃2017C01051


Effect of Bi2Sn2O7 doping on interfacial wettability and physical properties of Ag/SnO2 materials
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1.Zhejiang University of Technology;2.Zhejiang University

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    摘要:

    以化學(xué)共沉淀法合成的錫酸鉍（Bi2Sn2O7）為改性組元，采用座滴法研究了Bi2Sn2O7摻雜對(duì)Ag/SnO2界面潤(rùn)濕角的影響規(guī)律，并利用機(jī)械合金化技術(shù)結(jié)合成型燒結(jié)工藝制備了Ag/SnO2(x)-Bi2Sn2O7(y)電接觸材料。采用掃描電鏡、X射線衍射儀、視頻光學(xué)接觸角測(cè)量?jī)x、電阻測(cè)試儀、硬度計(jì)以及密度計(jì)等表征手段對(duì)材料的物相結(jié)構(gòu)、電學(xué)及力學(xué)性能進(jìn)行了表征。結(jié)果表明：所合成的Bi2Sn2O7粉體呈無(wú)規(guī)則顆粒狀，尺寸在1-10μm之間。Bi2Sn2O7摻雜能明顯改善Ag與SnO2之間界面潤(rùn)濕性，并且在Bi2Sn2O7與SnO2質(zhì)量比在2：10時(shí)潤(rùn)濕角最小為82°。Ag與SnO2之間的潤(rùn)濕角越小，Ag/SnO2(x)-Bi2Sn2O7(y)電接觸材料的電阻率越低，尤其在錫酸鉍摻雜量為2wt.%時(shí)電阻率達(dá)到最低值，為2.28μΩ·cm，致密度和硬度達(dá)到最大值，分別為96.96%和90.0 HV0.3。

    Abstract:

    Bismuth stannate (Bi2Sn2O7) synthesized by chemical coprecipitation was used as modified component. The effect of Bi2Sn2O7 doping on the wetting angle of Ag/SnO2 interface was studied by the sessile drop method. The Ag/SnO2(x)-Bi2Sn2O7(y) electrical contact materials were prepared by mechanical alloying technique combined with molding sintering process. The phase structure, electrical and mechanical properties of the materials were characterized by SEM, XRD, OCA, resistance tester, hardness tester and densimeter. The results showed that Bi2Sn2O7 doping can significantly improve the interfacial wettability between Ag and SnO2, and the minimum wetting angle is 82 ° when the mass ratio of Bi2Sn2O7 to SnO2 was 2:10. The lower resistivity of Ag/SnO2(x)-Bi2Sn2O7(y) electrical contact materials were achieved with a decreased wetting angle between Ag and SnO2. Especially when the content of Bi2Sn2O7 is 2wt.%, the resistivity reaches the lowest value2.28 (μΩ·cm), and the relative density (96.96%)and hardness(90.0 HV0.3) reach the maximum value.

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引用本文

鄭曉華,王 純,沈 濤,秦海波,楊芳兒. Bi2Sn2O7摻雜對(duì)Ag/SnO2材料界面潤(rùn)濕性及物理性能的影響[J].稀有金屬材料與工程,2022,51(2):552~558.[Zheng Xiaohua, Wang Chun, Shen Tao, Qin Haibo, Yang Fanger. Effect of Bi2Sn2O7 doping on interfacial wettability and physical properties of Ag/SnO2 materials[J]. Rare Metal Materials and Engineering,2022,51(2):552~558.]
DOI：10.12442/j. issn.1002-185X.20210177

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  • 收稿日期:2021-03-04
  • 最后修改日期:2021-05-08
  • 錄用日期:2021-05-13
  • 在線發(fā)布日期: 2022-03-09
  • 出版日期: 2022-02-28