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
AgWC30電接觸材料的電弧行為研究
DOI:
作者:
作者單位:

昆明貴金屬研究所 稀貴金屬綜合利用新技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室,昆明貴金屬研究所 稀貴金屬綜合利用新技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室,昆明貴金屬研究所 稀貴金屬綜合利用新技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室,昆明貴金屬研究所 稀貴金屬綜合利用新技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室,昆明貴金屬研究所 稀貴金屬綜合利用新技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室,昆明貴金屬研究所 稀貴金屬綜合利用新技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室,昆明貴金屬研究所 稀貴金屬綜合利用新技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室,昆明貴金屬研究所 稀貴金屬綜合利用新技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室

作者簡(jiǎn)介:

通訊作者:

中圖分類(lèi)號(hào):

基金項(xiàng)目:

國(guó)家自然科學(xué)(批準(zhǔn)號(hào)：51267007,51461023,51164015, U1302272)、云南省創(chuàng)新團(tuán)隊(duì)(批準(zhǔn)號(hào)：2012HC027)和云南省自然科學(xué)基金(批準(zhǔn)號(hào)：2010CD126,2012FB195,2015FA035)資助的課題


The research of arc erosion Characteristics of AgWC30 electrical contact material
Author:
Affiliation:

Sate Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metal,Kunming Institute of Precious Metals,Sate Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metal,Kunming Institute of Precious Metals,Sate Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metal,Kunming Institute of Precious Metals,Sate Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metal,Kunming Institute of Precious Metals,Sate Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metal,Kunming Institute of Precious Metals,Sate Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metal,Kunming Institute of Precious Metals,Sate Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metal,Kunming Institute of Precious Metals,Sate Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metal,Kunming Institute of Precious Metals

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問(wèn)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:

    對(duì)電弧基本行為的研究一直是電接觸材料領(lǐng)域的研究重點(diǎn),本研究以AgWC30觸頭為研究對(duì)象,借助高速攝像的手段,觀測(cè)電觸頭對(duì)在不同工作條件下,電弧行為的基本特征和規(guī)律,并進(jìn)行了定量測(cè)量研究。通過(guò)掃描電鏡對(duì)燃弧后觸頭表面形貌進(jìn)行分析。結(jié)果表明,電弧演化階段經(jīng)歷起弧,穩(wěn)定燃燒,迅速熄滅三個(gè)過(guò)程。起弧階段存在多點(diǎn)起弧特征,并伴有金屬熔滴的噴濺行為,穩(wěn)定燃燒階段出現(xiàn)電弧的產(chǎn)生、長(zhǎng)大和合并行為,最后電弧迅速熄滅。觸頭表面存在以WC為骨架覆Ag的大量凸丘與熔橋的產(chǎn)生和斷裂行為有密切關(guān)系,觸頭分?jǐn)噙^(guò)程中熔橋和電弧可同時(shí)存在,并存在一定的協(xié)助作用。

    Abstract:

    The generation mechanism of arc erosion is a key problem in the research of electric contact materials. Arc erosion characteristics of AgWC30 electrical contact material are investigated under direct current 25A and voltage in 20V, 25V, 30V, 35V respectively. The images of breaking arc light are obtained by a high-speed camera to deduce the forming regularity of arc evolution. The arc formation processes in different voltages are similar and go through three stages, including forming stage, steady burning and discharge quenching stage. On the other hand, the bullet-shaped convex, pore, crack and starchiness coagulum structure are observed on erosion surface of contacts under scanning electron microscopy (SEM). The bullet-shaped convex is formed in the break off of liquid bridge and is formed by the WC skeleton and Ag cladding. The results indicate that the liquid bridges occur allowing with the arc discharges and is promoted under the action of the arc heat flow.

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

任縣利,陳松,李慕陽(yáng),謝明,陳靜洪,王塞北,李?lèi)?ài)坤,劉滿門(mén). AgWC30電接觸材料的電弧行為研究[J].稀有金屬材料與工程,2017,46(11):3345~3351.[Ren Xianli, Chen Song, Li Muyang, Xie Ming, Chen Jinghong, Wang Saibei, Li Aikun, Liu Mangmeng. The research of arc erosion Characteristics of AgWC30 electrical contact material[J]. Rare Metal Materials and Engineering,2017,46(11):3345~3351.]
DOI：[doi]

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:2015-08-25
  • 最后修改日期:2015-12-17
  • 錄用日期:2016-01-14
  • 在線發(fā)布日期: 2017-12-13
  • 出版日期: