Relationship between Friction Coefficent and Surface Abrasive Situations of the Anodic Film on Al Alloy
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摘要: 測定了7075鋁合金的陽極氧化膜與GCr6鋼球對磨條件下,膜的摩擦系數隨對磨次數的變化曲線。發現前者隨著后者的增加而趨于增大,出現摩擦系數階躍上升和平緩變化交替的周期性變化過程。分析了摩擦系數變化與膜表面磨損過程的關系,認為摩擦系數不僅反映了膜最表層的磨損和磨合,同時還是載荷的沖擊作用引起的膜纖維束斷裂而使表面狀況惡化的宏觀表現。Abstract: The friction coefficent(μ)-time(t) transients of anodic film on 7070 Al Alloy were measured in the process of the film being worn by a small steel ball. It was found that the friction coefficent tended to increase during wearing. A phenomenon of periodic change of the friction coefficent, which increased steply and then changed slowly, occured repeatly. The friction coe-ffient were related not only to the abrasion of the sample surface but also to the fibre-boundies cracking in the subsurface layer of the anodic film.
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Key words:
- alumiaium /
- anodic film /
- friction coefficent abrasive
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