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用分形理論研究超音速電弧噴涂PS45涂層結合強度與噴涂電壓的關系
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TG146.4

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Study of the Bond Strength of PS45 Alloy Coatings Prepared by High Velocity Arc Spray and Processing Parameters on Fractal Theory
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    摘要:

    采用超音速電弧噴涂設備制備PS45涂層，借助于掃描電鏡和電子拉伸試驗機對涂層的顯微組織和結合強度進行了觀察分析與測定。通過圖像分析與處理技術，提取了PS45涂層與基體結合界面形貌圖像和曲線。利用Matlab語言設計了涂層界面的分形維數(shù)和多重分形譜寬的計算程序，探討了分形維數(shù)、多重分形譜、噴涂電壓對涂層結合強度的影響。分析計算結果表明：涂層結合界面形貌越復雜，分形維數(shù)越大，涂層與基體的結合強度越高：噴涂電壓升高，粒子熔化越充分，其涂層界面多重分形譜寬△a越小，涂層與基體結合界面均勻性越好。

    Abstract:

    In the paper, the microstructure of PS45 coatings prepared by high velocity electric wire arc spraying was investigated by scanning electron microscope. Bonding strength was tested by electron tensile testing machine. The interface morphology of PS45 coatings was acquired by means of picture analysis and processing technology, the computing programs of fractal dimensions and multifractal spectrum were designed in Matlab language. The relations of the bonding strength to spray voltage and fractal dimension and multifractal spectrum were discussed. The results of analysis and calculation show that the better the bonding strength of PS45 coatings is, the more complicated the interface morphology and bigger fractal dimensions are. With spray voltage gone up, the better the interface uniformity is, the smaller the spectrum width is.

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汪劉應 王漢功 華紹春 曹小平.用分形理論研究超音速電弧噴涂PS45涂層結合強度與噴涂電壓的關系[J].稀有金屬材料與工程,2006,35(2):291~294.[Wang Liuying, Wang Hangong, Hua Shaochun, Cao Xiaoping. Study of the Bond Strength of PS45 Alloy Coatings Prepared by High Velocity Arc Spray and Processing Parameters on Fractal Theory[J]. Rare Metal Materials and Engineering,2006,35(2):291~294.]
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  • 收稿日期:2005-09-02
  • 最后修改日期:2005-09-02
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