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所属单位：机电学院

发表刊物：INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS

关键字：Diamond wear Scratching Phase transformation WC/Co

摘要：In the present work, the diamond wear mechanism during the scratching test is studied by Raman spectroscopy, backscattering electron scanning microscope (BSEM), energy dispersive X-ray spectroscopy (EDS) and X ray photoelectron spectroscopy (XPS). As the impact pressure reached the fracture strength of the diamond, surface chipping of the diamond grits occurred as the dominated diamond wear mechanism, which resulted in the formation of scattered micro diamond flakes on WC/Co surface. The transformation of diamond to graphite and oxidation of graphite are identified at the chip formation stage during the diamond scratching of WC/Co. In addition, the formation of tetrahedrally bonded amorphous carbon phase is proposed as new wear mechanisms under the dynamic loads.

ISSN号：0263-4368

是否译文：否

发表时间：2018-01-01

合写作者：Zhao, Qingliang,苏宏华,To, Suet

通讯作者：Zhao, Qingliang,张全利