Elucidation for Micro-Tribology Behavior by Characterization of the Coating on Tool Surface

在滚压过程中，工件材料与刀具表面发生粘结，在刀具表面形成涂层。涂层对产品的表面质量有很大影响。在许多关于涂层的研究中，从宏观角度考察了表面粗糙度和材料组成对涂层的影响。然而，需要新的信息来了解轧辊与工件界面处的摩擦学特性。为获得铝冷轧轧辊涂层的新信息，对涂层表面进行了X射线衍射分析。此外，用准直器代替了通常使用的薄膜狭缝，开发了一种新的涂层微观分析方法。传统的薄膜分析方法适用于辊涂分析，但测量面积不小，为了分析涂层的小面积，采用准直仪代替薄膜狭缝装置，采用铜-卡尔法辐射测量，强度测量采用固定时间法。(1)与常规方法相比，新方法可以在较小的测量区域内对涂层进行定性分析。(2)该方法对轧辊涂层的微观分析是有效的。

In the rolling process, the adhesion of the workpiece material on the tool surface is occurred, and the coating on the surface is generated. The coating has great influence on the surface quality of the product. In many studies on the coating the effect of surface as roughness and material composition on coating have been examined in the macroscopic point of view. However, new information is necessary to understand the tribological characteristic at the interface between roll and workpiece. In this report, in order to obtain the new information for the roll coating in the aluminum cold rolling the surface of coating is analyzed by the X-ray diffraction. Moreover, a new microscopic analysis for the coating is developed by using the collimator instead of the thin-film slit used usually. The conventional thin-film method is suitable for the roll coating analysis, but the measurement area is not small, therefore collimate device is used instead of the thin-film slit device in order to analyze the small area of the coating Cu-Kalpha radiation was used for the measurement, and Fixed Time method is used for measuring intensity.The experiment results obtain by the new developed X-ray diffraction method are follows. (1)The qualitative analysis of the coating by new method in the smaller measurement area is possible compare with the conventional area. (2)The newly developed method is effective for microscopic analysis of roll coating.