2;Ag粉粒度;電弧侵蝕"/> 2（質(zhì)量分?jǐn)?shù)，下同）觸頭材料，測量了Ag-4% TiB2觸頭材料的致密度、導(dǎo)電率和硬度，并在真空下對(duì)Ag-4% TiB2觸頭材料進(jìn)行了電弧侵蝕實(shí)驗(yàn)。采用掃描電子顯微鏡對(duì)Ag-4% TiB2觸頭材料電弧侵蝕后的表面形貌進(jìn)行了表征，采用TDS-2014雙通道數(shù)字存儲(chǔ)示波器記錄了燃弧波形，并計(jì)算了燃弧時(shí)間，對(duì)電弧侵蝕機(jī)理進(jìn)行了探討。結(jié)果表明，Ag-4% TiB2觸頭材料的致密度、導(dǎo)電率和硬度均隨著Ag粒度的降低而增加。另外，采用細(xì)銀粉制備的Ag-4% TiB2觸頭材料具有較長的燃弧時(shí)間、較大的侵蝕面積和較淺的蝕坑，表明細(xì)小的Ag顆粒有助于電弧分散，能夠提高材料的耐電弧侵蝕性能。"/>

最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

+高級(jí)檢索
不同粒度銀粉的Ag-TiB2 觸頭材料電弧侵蝕行為
作者:
作者單位:

1.西安理工大學(xué) 陜西省電工材料與熔(浸)滲技術(shù)重點(diǎn)實(shí)驗(yàn)室，陜西 西安 710048;2.西北有色金屬研究院，陜西 西安 710016

作者簡介:

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:

National Natural Science Foundation of China (No.51971173)，Doctoral Dissertation Innovation Fund of Xi’an University of Technology (310/252072011)


Arc Erosion Behavior of Ag-TiB2 Contact Materials with Ag Powders of Different Sizes
Author:
Affiliation:

1.Shaanxi Key Laboratory of Electrical Materials and Infiltration Technology, Xi'an University of Technology, Xi'an 710048, China;2.Northwest Institute of Nonferrous Metals, Xi'an 710016, China

Fund Project:

National Natural Science Foundation of China (51971173); Doctoral Dissertation Innovation Fund of Xi'an University of Technology (310/252072011)

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計(jì)
    • |
  • 參考文獻(xiàn)
    • |
  • 相似文獻(xiàn)
    • |
  • 引證文獻(xiàn)
    • |
  • 資源附件
    • |
  • 文章評(píng)論
    摘要:

    采用不同粒度的銀粉和放電等離子燒結(jié)工藝制備了Ag-4% TiB2（質(zhì)量分?jǐn)?shù)，下同）觸頭材料，測量了Ag-4% TiB2觸頭材料的致密度、導(dǎo)電率和硬度，并在真空下對(duì)Ag-4% TiB2觸頭材料進(jìn)行了電弧侵蝕實(shí)驗(yàn)。采用掃描電子顯微鏡對(duì)Ag-4% TiB2觸頭材料電弧侵蝕后的表面形貌進(jìn)行了表征，采用TDS-2014雙通道數(shù)字存儲(chǔ)示波器記錄了燃弧波形，并計(jì)算了燃弧時(shí)間，對(duì)電弧侵蝕機(jī)理進(jìn)行了探討。結(jié)果表明，Ag-4% TiB2觸頭材料的致密度、導(dǎo)電率和硬度均隨著Ag粒度的降低而增加。另外，采用細(xì)銀粉制備的Ag-4% TiB2觸頭材料具有較長的燃弧時(shí)間、較大的侵蝕面積和較淺的蝕坑，表明細(xì)小的Ag顆粒有助于電弧分散，能夠提高材料的耐電弧侵蝕性能。

    Abstract:

    The Ag-TiB2 contact materials with Ag powders of different sizes were prepared by spark plasma sintering. The relative density, electroconductivity, and hardness of Ag-4wt% TiB2 contact materials were measured, and the arc erosion behavior of the contact materials was analyzed under the vacuum condition. The surface morphologies of Ag-4wt% TiB2 contact materials after arc erosion were characterized by the scanning electron microscope. The arc duration was determined by the discharged waveform recorded by a Tektronix TDS-2014 dual channel digital memory oscilloscope, and the arc erosion mechanism was discussed. The results show that the relative density, electroconductivity, and hardness of Ag-4wt% TiB2 contact materials are increased with decreasing the Ag powder size. Furthermore, the Ag-4wt% TiB2 contact materials prepared from fine Ag powder have longer arc duration, larger erosion area, and shallower erosion pit, suggesting that the fine Ag powder is beneficial for arc dispersion and the improvement in arc erosion resistance.

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

李航宇,王獻(xiàn)輝,高倩雯,梁燕,費(fèi)媛.不同粒度銀粉的Ag-TiB2 觸頭材料電弧侵蝕行為[J].稀有金屬材料與工程,2022,51(3):765~771.[Li Hangyu, Wang Xianhui, Gao Qianwen, Liang Yan, Fei Yuan. Arc Erosion Behavior of Ag-TiB2 Contact Materials with Ag Powders of Different Sizes[J]. Rare Metal Materials and Engineering,2022,51(3):765~771.]
DOI：10.12442/j. issn.1002-185X.20210018

復(fù)制
文章指標(biāo)
  • 點(diǎn)擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2021-01-08
  • 最后修改日期:2021-03-03
  • 錄用日期:2021-03-22
  • 在線發(fā)布日期: 2022-03-30
  • 出版日期: 2022-03-30