Preparation and Performance of Cu-Cr Contact Materials for Vacuum Switches with Low Contact Pressure

Yanli Chang; Wei Zheng; Zhiming Zhou; Yuxiang Zhai; Yaping Wang

doi:10.1007/s11664-016-4782-0

Preparation and Performance of Cu-Cr Contact Materials for Vacuum Switches with Low Contact Pressure

Yanli Chang
, Wei Zheng
, Zhiming Zhou
, Yuxiang Zhai
, Yaping Wang

School of Physics

Xi'an Jiaotong University
Chongqing Institute of Technology

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

Insufficient anti-welding properties limit the application of Cu-Cr contact material in vacuum switches with low contact pressure. The CuCr-W-C alloys that are prepared are for decreasing welding tendencies and keeping the voltage withstand by addition of W and C elements. It is found that the average welding force of CuCr-W-C alloys is reduced more than 50% compared with that of the Cu₅₀Cr₅₀ alloy. Especially for CuCrW_3.0C_0.3 and CuCrW_1.0C_0.5, the welding forces reduce to only 10% of Cu₅₀Cr₅₀. Arc erosion areas of CuCr-W-C alloys are enlarged by five times more than that of the Cu₅₀Cr₅₀ alloy in the same arcing conditions. The results of type tests were qualified. The results suggested that the CuCrW_2.0C_1.0 alloy could be used in vacuum switches with low contact pressure to replace the W-Cu type contacts.

Original language	English
Pages (from-to)	5647-5654
Number of pages	8
Journal	Journal of Electronic Materials
Volume	45
Issue number	11
DOIs	https://doi.org/10.1007/s11664-016-4782-0
State	Published - 1 Nov 2016

Keywords

CuCr-W-C
anti-welding
low contact pressure
vacuum switch

Access to Document

10.1007/s11664-016-4782-0

Cite this

@article{ff8a81f67fa941c6a4a2b4c8e2093d78,

title = "Preparation and Performance of Cu-Cr Contact Materials for Vacuum Switches with Low Contact Pressure",

abstract = "Insufficient anti-welding properties limit the application of Cu-Cr contact material in vacuum switches with low contact pressure. The CuCr-W-C alloys that are prepared are for decreasing welding tendencies and keeping the voltage withstand by addition of W and C elements. It is found that the average welding force of CuCr-W-C alloys is reduced more than 50\% compared with that of the Cu50Cr50 alloy. Especially for CuCrW3.0C0.3 and CuCrW1.0C0.5, the welding forces reduce to only 10\% of Cu50Cr50. Arc erosion areas of CuCr-W-C alloys are enlarged by five times more than that of the Cu50Cr50 alloy in the same arcing conditions. The results of type tests were qualified. The results suggested that the CuCrW2.0C1.0 alloy could be used in vacuum switches with low contact pressure to replace the W-Cu type contacts.",

keywords = "CuCr-W-C, anti-welding, low contact pressure, vacuum switch",

author = "Yanli Chang and Wei Zheng and Zhiming Zhou and Yuxiang Zhai and Yaping Wang",

note = "Publisher Copyright: {\textcopyright} 2016, The Minerals, Metals \& Materials Society.",

year = "2016",

month = nov,

day = "1",

doi = "10.1007/s11664-016-4782-0",

language = "英语",

volume = "45",

pages = "5647--5654",

journal = "Journal of Electronic Materials",

issn = "0361-5235",

publisher = "Springer New York",

number = "11",

}

TY - JOUR

T1 - Preparation and Performance of Cu-Cr Contact Materials for Vacuum Switches with Low Contact Pressure

AU - Chang, Yanli

AU - Zheng, Wei

AU - Zhou, Zhiming

AU - Zhai, Yuxiang

AU - Wang, Yaping

PY - 2016/11/1

Y1 - 2016/11/1

N2 - Insufficient anti-welding properties limit the application of Cu-Cr contact material in vacuum switches with low contact pressure. The CuCr-W-C alloys that are prepared are for decreasing welding tendencies and keeping the voltage withstand by addition of W and C elements. It is found that the average welding force of CuCr-W-C alloys is reduced more than 50% compared with that of the Cu50Cr50 alloy. Especially for CuCrW3.0C0.3 and CuCrW1.0C0.5, the welding forces reduce to only 10% of Cu50Cr50. Arc erosion areas of CuCr-W-C alloys are enlarged by five times more than that of the Cu50Cr50 alloy in the same arcing conditions. The results of type tests were qualified. The results suggested that the CuCrW2.0C1.0 alloy could be used in vacuum switches with low contact pressure to replace the W-Cu type contacts.

AB - Insufficient anti-welding properties limit the application of Cu-Cr contact material in vacuum switches with low contact pressure. The CuCr-W-C alloys that are prepared are for decreasing welding tendencies and keeping the voltage withstand by addition of W and C elements. It is found that the average welding force of CuCr-W-C alloys is reduced more than 50% compared with that of the Cu50Cr50 alloy. Especially for CuCrW3.0C0.3 and CuCrW1.0C0.5, the welding forces reduce to only 10% of Cu50Cr50. Arc erosion areas of CuCr-W-C alloys are enlarged by five times more than that of the Cu50Cr50 alloy in the same arcing conditions. The results of type tests were qualified. The results suggested that the CuCrW2.0C1.0 alloy could be used in vacuum switches with low contact pressure to replace the W-Cu type contacts.

KW - CuCr-W-C

KW - anti-welding

KW - low contact pressure

KW - vacuum switch

UR - https://www.scopus.com/pages/publications/84979992887

U2 - 10.1007/s11664-016-4782-0

DO - 10.1007/s11664-016-4782-0

M3 - 文章

AN - SCOPUS:84979992887

SN - 0361-5235

VL - 45

SP - 5647

EP - 5654

JO - Journal of Electronic Materials

JF - Journal of Electronic Materials

IS - 11

ER -

Preparation and Performance of Cu-Cr Contact Materials for Vacuum Switches with Low Contact Pressure

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this