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等離子體噴涂Sn和ZrO2涂層／U-Nb合金摩擦副的摩擦性能
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O614.432 O614.412

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中國工程物理研究院科學(xué)基金項目(20030868)


Friction Characteristics of Plasma-Sprayed Sn and ZrO2 Coatings against U-Nb Alloy
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    摘要:

    探討了用等離子體噴涂方法制備改善與U-Nb合金之間摩擦性能的減摩層的可行性。比較了U-Nb合金在涂層表面滑動時Sn軟涂層，Sn／ZrO2雙涂層，ZrO2硬涂層和ZrO2中加入Sn的混合涂層的摩擦特性。結(jié)果表明，表層為Sn的單涂層和Sn／ZrO2雙涂層的摩擦性能相近，Sn單涂層的摩擦系數(shù)最低。ZrO2硬涂層一直保持著較高的摩擦系數(shù)，在ZrO2中加入Sn后，涂層的摩擦系數(shù)沒有得到有效改善。用等離子體噴涂方法制備的ZrO2硬涂層不適合作U-Nb合金的減摩層。切削是Sn、Sn／ZrO2、Sn ZrO2、ZrO2的涂層與U-Nb合金之間主要的摩擦機(jī)理。

    Abstract:

    The feasibility of reduced-friction coating against U-Nb alloy made by plasma spray technique was investigated. Sn soft coating, Sn/ ZrO2 dual coating, Sn and ZrO2 mixing coating and ZrO2 hard coating were prepared by plasma spray technique. The sliding friction behavior of these coatings against U-Nb alloy was evaluated. The friction characteristic of Sn coating is similar to Sn/ ZrO2 dual coating and its friction coefficient is the lowest among the four coatings. Friction coefficient of ZrO2 coating, into which Sn was added, is decreased little, while friction coefficient of ZrO2 hard coating is stabilized at high value with the increase of sliding number of cycles. ZrO2 coating by plasma spray technique plays no role in reducing friction against U-Nb alloy. Plough is the main friction mechanism of these coatings.

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白彬 肖云峰 郎定木 劉清和.等離子體噴涂Sn和ZrO2涂層／U-Nb合金摩擦副的摩擦性能[J].稀有金屬材料與工程,2005,34(7):1114~1118.[Bai Bin, Xiao Yunfeng, Lang Dingmu, Liu Qinghe. Friction Characteristics of Plasma-Sprayed Sn and ZrO2 Coatings against U-Nb Alloy[J]. Rare Metal Materials and Engineering,2005,34(7):1114~1118.]
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  • 最后修改日期:2003-12-25
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