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溶胶-凝胶法制备YAG颗粒及在电接触材料中的应用
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浙江大学,浙江大学,浙江大学,浙江大学,温州宏丰电工合金股份有限公司;温州宏丰电工合金股份有限公司,温州宏丰电工合金股份有限公司;温州宏丰电工合金股份有限公司

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浙江省科技计划项目,项目号2017C01051;浙江省自然科学基金,LQ17E010002


Preparation of YAG Nanoparticles by Sol-Gel and its Application in Electrical Contact Material
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Department of Materials Science and Engineering,Zhejiang University,Department of Materials Science and Engineering,Zhejiang University,Department of Materials Science and Engineering,Zhejiang University,Department of Materials Science and Engineering,Zhejiang University,Wenzhou Hongfeng Electrical Alloy Co Ltd,Wenzhou Hongfeng Electrical Alloy Co Ltd

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    摘要:

    以硝酸钇(Y(NO3)36H2O)、硝酸铝(Al(NO3)39H2O)为主要原料,六次甲基四胺作为催化剂,采用溶胶-凝胶法合成Y3Al5O12(YAG)纳米颗粒,并以YAG颗粒为第二相增强材料,通过粉末冶金工艺制备Ag/YAG电接触复合材料;采用X-射线衍射仪(XRD),扫描电子显微镜(SEM),透射电子显微镜(TEM),傅里叶红外光谱(FT-IR)、硬度计、电导率仪等方法对其进行表征。结果表明:在水浴温度为50℃的条件下成功采用sol-gel法合成YAG纳米颗粒,物相纯度高;随着催化剂六次甲基四胺加入量的增加,YAG粉末颗粒粘连在一起,并出现大孔;以YAG为第二相增强材料制备的Ag/YAG电接触复合片材电阻率较低,维氏硬度大于80。

    Abstract:

    YAG nanoparticles were prepared by sol - gel method using yttrium nitrate (Y(NO3)36H2O) and aluminum nitrate (Al(NO3)39H2O) as the main raw materials and hexamethylenediamine as the catalyst. Ag / YAG electrical contact composites were fabricated by powder metallurgy. And the microstructure and properties of them were characterized by XRD, SEM, TEM, FTIR and so on. The results showed that pure YAG nanoparticles were successfully synthesized by sol-gel method with the bath temperature of 50℃. The size of YAG nanoparticles increased with the increasing of the amount of hexamethylenediamine.And low resistivity and high hardness (>80Hv) of Ag / YAG electrical contact composite were obtained when sintering temperature reached 860℃.

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管秉钰,张玲洁,杨辉,樊先平,祁更新,陈晓.溶胶-凝胶法制备YAG颗粒及在电接触材料中的应用[J].稀有金属材料与工程,2018,47(S2):40~43.[Guan Bingyu, Zhang Lingjie, Yang Hui, Fan Xianping, Qi Gengxin, Chen Xiao. Preparation of YAG Nanoparticles by Sol-Gel and its Application in Electrical Contact Material[J]. Rare Metal Materials and Engineering,2018,47(S2):40~43.]
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  • 收稿日期:2017-12-12
  • 最后修改日期:2017-12-12
  • 录用日期:2018-02-01
  • 在线发布日期: 2018-11-01
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