Abstract: Using M-2000 tribology machine, under non-lubrication, water-lubrication and oil-lubrication test situation, the tribology properties of three kinds of C/C composites were studied with the 40Cr steel as couple part. The results show that among the three kinds of test situation, the samples tested under non-lubrication situation own the highest friction coefficient and the least bulk worn loss under the same loading, and among the three kinds of composites tested under the non-lubrication test situation, the resin carbon matrix sample exhibits the highest friction coefficient that is between 0.141 and 0.205. The samples friction coefficient under water-lubrication test situation is the least that is between 0.05 and 0.10, but their bulk worn loss is the highest that can be 7.75mm3 under 150N loading. Both friction coefficient and bulk worn loss of the samples under oil-lubrication test situation are the midst. The samples friction coefficient under non-lubrication test situation decreases slowly with increasing load, while those of the samples under water-lubrication or oil-lubrication test situation increase at first but decrease at last. SEM shows that the integrity friction film is only formed on the non-lubrication tested sample. The wear mechanism under all test situations is abrasion wear and plough wear.
Influence of lubrication on tribology properties of C/C composites
Abstract:
Using M-2000 tribology machine, under non-lubrication, water-lubrication and oil-lubrication test situation, the tribology properties of three kinds of C/C composites were studied with the 40Cr steel as couple part. The results show that among the three kinds of test situation, the samples tested under non-lubrication situation own the highest friction coefficient and the least bulk worn loss under the same loading, and among the three kinds of composites tested under the non-lubrication test situation, the resin carbon matrix sample exhibits the highest friction coefficient that is between 0.141 and 0.205. The samples friction coefficient under water-lubrication test situation is the least that is between 0.05 and 0.10, but their bulk worn loss is the highest that can be 7.75 mm3 under 150 N loading. Both friction coefficient and bulk worn loss of the samples under oil-lubrication test situation are the midst. The samples friction coefficient under non-lubrication test situation decreases slowly with increasing load, while those of the samples under water-lubrication or oil-lubrication test situation increase at first but decrease at last. SEM shows that the integrity friction film is only formed on the non-lubrication tested sample. The wear mechanism under all test situations is abrasion wear and plough wear.