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According to the national test standards for constant speed friction tester :GB/5763-98, the sample test is designed which suits for the study of the micro-automobile clutch friction material’s properties, and the experiment data has been analyzed, and also using X-ray diffraction and Scanning electron microscopy(SEM) to analyze the friction coefficient of friction material, changes in wear quality and the formation of friction work surface layer, the final conclusion has been made that the micro-automobile clutch sliding wear consist of mild wear and severe wear; The friction surface of mild wear is relatively rough, while the friction surface of severe wear is relatively smooth or with obvious noise; mild wear mostly appears as oxidation wear and abrasive wear and normally with the adhesive wear together, while severe wear is mostly induced by severe plastic deformation(serious delaminating wear) , and mostly appears as adhesive wear and abrasive wear.