添加物Bi对AgSnO<sub>2</sub>触头材料的影响

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Abstract AgSnO₂ is a kind of new contact materials which can instead of AgCdO, and the internal oxidation of the alloy is one of main methods to produce it. In the production of AgSnO₂, the internal oxidation of alloy powders is incomplete and at a low speed, and researching on the addition of metal elements to promote internal oxidation is important. In the present paper, the elements Bi are alloyed with Ag and Sn, and the AgSnBi alloy powders are produced by mechanical alloying. After suppression of molding, sintering, densification process, alloy powder is placed in the resistance furnace and the internal oxidation is carried out at atmospheric atmosphere. The method to measure the increase of the internal oxidation things is used to analyze the infection on the internal oxidation of Bi to AgSn. The analysis about microstructure and feature of AgSnO₂-Bi₂O₃ is made through PhilipsXL30W/TMP and the analysis about micro-area analysis is made through energy spectrometer. The results show that the oxidation rate of AgSn alloy is speeded up by Bi element significantly and the organization of the material AgSnO₂-Bi₂O₃ is dense.

Key words： AgSnO contact materials internal oxidation microstructure

Received: 20 February 2010 Published: 07 March 2014

PACS:

TM501+.3

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	Wang Jingqin
	Zhu Yancai
	Wang Haitao
	Zhao Jun

Cite this article:

Wang Jingqin,Zhu Yancai,Wang Haitao等. Impact of Additives Bi on AgSnO₂ Contact Material[J]. Transactions of China Electrotechnical Society, 2011, 26(1): 29-33.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2011/V26/I1/29

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