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SiCp/AZ91D納米復(fù)合材料的摩擦磨損行為研究
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Study on Friction and Wear Behavior of SiCp/AZ91D Nanocomposites
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    摘要:

    采用機(jī)械攪拌與高能超聲處理法制備了納米SiC顆粒(n-SiCp)增強(qiáng)的鎂基復(fù)合材料，探討了基體及其復(fù)合材料的干滑動(dòng)摩擦磨損行為。結(jié)果表明：由于納米顆粒的強(qiáng)化作用，復(fù)合材料的耐磨性能要明顯的強(qiáng)于基體，隨著載荷的增加，基體和復(fù)合材料的磨損率線性增加，在磨損過程中，基體和復(fù)合材料經(jīng)過磨合磨損和穩(wěn)態(tài)磨損兩個(gè)階段。通過對(duì)磨損表面的顯微分析發(fā)現(xiàn), 磨損機(jī)制主要是粘著磨損、磨粒磨損和剝層磨損，載荷大小對(duì)磨損機(jī)制有重要影響。

    Abstract:

    Magnesium matrix nanocomposites reinforced with nano-sized SiC particles (n-SiCp) were fabricated by mechanical stirring and high intensity ultrasonic dispersion processing. The dry sliding friction and wear behavior of the magnesium alloy and its nanocomposites were investigated. The results show that the wear resistance of the nanocomposites is higher than that of pure AZ91D alloy due to the nanoparticles reinforced effects. The wear rate increases linearly with the increase of the load for the matrix and its nanocomposites. The wear process of the matrix and the nanocomposites consists of two stages, i.e. running and stable wear stages. The SEM and LSCM analysis results on the worn surface indicate that the main wear mechanism is adhesive wear, abrasive wear and delamination wear. The load has an important effect on the wear mechanism.

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劉世英,李文珍,張瓊元,朱 雪,何廣進(jìn),李明遠(yuǎn). SiCp/AZ91D納米復(fù)合材料的摩擦磨損行為研究[J].稀有金屬材料與工程,2012,41(1):110~114.[Liu Shiying, Li Wenzhen, Zhang Qiongyuan, Zhu Xue, He Guangjin, Li Mingyuan. Study on Friction and Wear Behavior of SiCp/AZ91D Nanocomposites[J]. Rare Metal Materials and Engineering,2012,41(1):110~114.]
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  • 收稿日期:2011-01-15
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