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Cu/TiBN電接觸材料的導(dǎo)電性及抗電弧侵蝕機(jī)理
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TG146.3

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江蘇省雙創(chuàng)人才資助（項(xiàng)目號JSSCRC2021545）


Electrical conductivity and arc erosion resistance of a new type Cu/TiBN electrical contact materials
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the Innovative and Entrepreneurial Talent Foundation of Jiangsu Province (No. JSSCRC2021545).

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    摘要:

    采用滲硼燒結(jié)法合成了一種新型TiBN粉體材料，它兼有陶瓷性和金屬性，電阻率為2.6×10-3Ω·cm。以TiBN和TiN為增強(qiáng)相，采用粉末冶金法制備了Cu/TiBN和Cu/TiN電接觸材料，系統(tǒng)的研究了不同含量TiBN和TiN的電接觸材料的微觀結(jié)構(gòu)和物理性能。結(jié)果表明，與TiN相比，TiBN增強(qiáng)相能明顯改善Cu基電接觸材料的導(dǎo)電性能、抗氧化性能、硬度和抗電弧侵蝕性能。當(dāng)含量為5wt.%時(shí)，Cu/TiBN電接觸材料的抗電弧侵蝕能力最好，重量損失僅為1.5mg。電弧侵蝕時(shí)，在Cu/TiBN表面生成TixOy、B2O3和N2等產(chǎn)物，這些產(chǎn)物能明顯改善Cu/TiBN電接觸材料的抗電弧侵蝕能力。新開發(fā)的Cu/TiBN電接觸材料具有優(yōu)異的物理性能和抗電弧侵蝕性能，在電接觸行業(yè)中擁有廣闊的應(yīng)用前景。

    Abstract:

    A new kind TiBN powder material was synthesized by boronizing sintering method. TiBN was both ceramic and metallic, with a resistivity of 2.6 × 10-3 Ω·cm. Cu/TiBN and Cu/TiN electrical contact materials were prepared by powder metallurgy using TiBN and TiN as reinforced phases. These microstructure and physical properties of electrical contact materials with different contents of TiBN and TiN were systematically investigated. The results demonstrated that, when compared to TiN, the TiBN reinforced phase can significantly improve the electrical conductivity, oxidation resistance, hardness, and arc erosion resistance of Cu-based electrical contact materials. When the content of TiBN was 5wt.%, the arc erosion resistance of Cu/TiBN was the best, and the weight loss was only 1.5mg. During arc erosion, products such as TixOy, B2O3 and N2 were formed on the surface of Cu/TiBN. These products can significantly improve the arc erosion resistance of Cu/TiBN electrical contact materials. The newly developed Cu/TiBN electrical contact materials had excellent mechanical properties and resistance to arc erosion, and had a broad application prospect in the electrical contact industry.

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張秋濤,劉雙宇,陸 萍,劉學(xué)然,張福隆,Vasilieva Tatiana Mikhailovna. Cu/TiBN電接觸材料的導(dǎo)電性及抗電弧侵蝕機(jī)理[J].稀有金屬材料與工程,2024,53(1):188~196.[Zhang Qiutao, Liu Shuangyu, Lu Ping, Liu Xueran, Zhang Fulong, Vasilieva Tatiana Mikhailovna. Electrical conductivity and arc erosion resistance of a new type Cu/TiBN electrical contact materials[J]. Rare Metal Materials and Engineering,2024,53(1):188~196.]
DOI：10.12442/j. issn.1002-185X.20220802

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  • 收稿日期:2022-10-14
  • 最后修改日期:2022-12-09
  • 錄用日期:2023-01-03
  • 在線發(fā)布日期: 2024-01-29
  • 出版日期: 2024-01-24