2NiO復(fù)合材料;合金內(nèi)氧化;接觸電阻;抗熔焊性;材料轉(zhuǎn)移"/> 2NiO電觸頭材料,在JF04C觸點(diǎn)材料測試機(jī)上對材料進(jìn)行電接觸實(shí)驗(yàn),研究了該材料的接觸電阻、抗熔焊性、材料轉(zhuǎn)移特性,并通過掃描電鏡對試樣陰/陽極表面電侵蝕下的微觀形貌進(jìn)行了分析。結(jié)果表明,NiO的加入有利于減小并穩(wěn)定接觸電阻,電壓不高于18 V時(shí),接觸電阻隨開閉次數(shù)的增加呈現(xiàn)出緩慢下降最后趨于穩(wěn)定的趨勢,而當(dāng)測試電壓增大到25 V時(shí),各試樣的接觸電阻隨之增大,且各試樣接觸電阻的增幅不同;材料的熔焊力和燃弧能量均隨電壓的增加而增大,NiO含量的增加并不會(huì)明顯降低熔焊力,但起到了減小燃弧能量的作用。電接觸過程材料為陽極轉(zhuǎn)移,材料總損耗量隨NiO的加入量增多而降低,陰極觸頭表面明顯附有一層凝固后的熔融金屬液形貌,材料轉(zhuǎn)移主要以熔橋方式進(jìn)行,且凸峰表面呈現(xiàn)漿糊狀尖峰的形貌特征。"/>

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AgSnO2NiO電觸頭材料電接觸性能的研究
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1.昆明理工大學(xué);2.稀貴金屬綜合利用新技術(shù)國家重點(diǎn)實(shí)驗(yàn)室;3.哈爾濱工業(yè)大學(xué);4.桂林市微電子元件電極材料與生物納米材料重點(diǎn)實(shí)驗(yàn)室

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Electrical Contact Properties of AgSnO2NiO Electrical Contact Material
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Faculty of Material Science and Engineering,Kunming University of Science and Technology

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    摘要:

    采用合金內(nèi)氧化法制備了不同NiO含量的AgSnO2NiO電觸頭材料,在JF04C觸點(diǎn)材料測試機(jī)上對材料進(jìn)行電接觸實(shí)驗(yàn),研究了該材料的接觸電阻、抗熔焊性、材料轉(zhuǎn)移特性,并通過掃描電鏡對試樣陰/陽極表面電侵蝕下的微觀形貌進(jìn)行了分析。結(jié)果表明,NiO的加入有利于減小并穩(wěn)定接觸電阻,電壓不高于18 V時(shí),接觸電阻隨開閉次數(shù)的增加呈現(xiàn)出緩慢下降最后趨于穩(wěn)定的趨勢,而當(dāng)測試電壓增大到25 V時(shí),各試樣的接觸電阻隨之增大,且各試樣接觸電阻的增幅不同;材料的熔焊力和燃弧能量均隨電壓的增加而增大,NiO含量的增加并不會(huì)明顯降低熔焊力,但起到了減小燃弧能量的作用。電接觸過程材料為陽極轉(zhuǎn)移,材料總損耗量隨NiO的加入量增多而降低,陰極觸頭表面明顯附有一層凝固后的熔融金屬液形貌,材料轉(zhuǎn)移主要以熔橋方式進(jìn)行,且凸峰表面呈現(xiàn)漿糊狀尖峰的形貌特征。

    Abstract:

    AgSnO2NiO electrical contacts with different NiO contents were prepared by internal oxidation method. Electrical contact experiments were conducted on the JF04C contact material testing machine. The contact resistance, anti-weldability and material transfer properties of materials were studied. The sample surface morphology changes were analyzed by scanning electron microscopy (SEM). The results show that the addition of NiO is beneficial to reduce and stabilize the contact resistance. When the voltage is not higher than 18 V, the contact resistance gradually decreases with the increase of test times and finally tends to be stable. When the voltage reaches 25 V, the contact resistance of materials will increases, and the increased degree of the contact resistance is different. Both the welding power and the arcing energy of the material will increase with the voltage increases. The increase of the NiO content does not significantly reduce the melting, but it played a important role in reducing the arc energy. The electrical contact process is anodic transfer. The total mass loss of materials decreases with the increase of NiO contact. The surface of the cathode is obviously accompanied by a layer of solidified molten metal. The material transfer is mainly carried out by a fused-bridge mode with a convex peak. The surface exhibits a paste-like peak topography.

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周曉龍,熊愛虎,劉滿門,鄭 忠,于 杰,王立惠. AgSnO2NiO電觸頭材料電接觸性能的研究[J].稀有金屬材料與工程,2019,48(9):2885~2892.[ZHOU Xiaolong, xiong ai hu, liu man men, zheng zhong, yu jie, wang li hui. Electrical Contact Properties of AgSnO2NiO Electrical Contact Material[J]. Rare Metal Materials and Engineering,2019,48(9):2885~2892.]
DOI:10.12442/j. issn.1002-185X.20180371

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  • 收稿日期:2018-04-13
  • 最后修改日期:2018-05-02
  • 錄用日期:2018-05-18
  • 在線發(fā)布日期: 2019-10-09
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