干摩擦条件下表面织构聚晶金刚石紧凑刀具的摩擦学行为

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Wear Pub Date : 2025-10-11 DOI:10.1016/j.wear.2025.206387

Yanbo Ding , Tan Lei , Baochang Liu

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引用次数: 0

摘要

为了研究表面纹理化聚晶金刚石（PDC）切割机在干摩擦条件下的摩擦学行为，采用纳秒激光在PDC表面形成宽度为50 μm、深度为100 μm的沟槽。凹槽间距分别为1000、500和100 μm。随后，在MUU-10摩擦磨损试验装置上，以PDC和氮化硅（Si3N4）球作为摩擦副，进行干摩擦试验。利用扫描电镜、体视显微镜、x射线衍射和拉曼光谱对PDC切削齿和氮化硅球进行了表征。结果表明，与无织构的PDC切削齿相比，随着沟槽间距的减小，摩擦系数和磨损率均有所降低。表面纹理化有利于摩擦过程中转移膜的形成，并且没有观察到孔隙。金刚石相得到增强，脆性η相得到抑制。槽距为100 μm的PDC切削齿的耐磨性最好。

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Tribological behaviour of surface textured Polycrystalline diamond compact cutters under dry friction conditions

To investigate the tribological behaviour of surface textured polycrystalline diamond compact (PDC) cutters under dry friction, a nanosecond laser was employed to create grooves on the PDC surface with dimensions of 50 μm in width and 100 μm in depth. The groove spacings were 1000, 500 and 100 μm. Subsequently, dry friction experiments were carried out on an MUU-10 friction and wear testing device, using PDC and silicon nitride (Si₃N₄) balls as the frictional pairs. Characterisation of the PDC cutters and Si₃N₄ balls was conducted using scanning electron microscopy, stereomicroscopy, X-ray diffraction and Raman spectroscopy. Results showed that both the coefficient of friction and wear rate decreased with reduced groove spacing, in comparison to untextured PDC cutters. Surface texturing facilitated the formation of a transfer film during friction, and no pores were observed. Furthermore, the diamond phase was enhanced, while the brittle η phase was suppressed. The best wear resistance was observed in PDC cutters textured with a groove spacing of 100 μm.

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来源期刊

Wear 工程技术-材料科学：综合

CiteScore

8.80

自引率

8.00%

发文量

280

审稿时长

47 days

期刊介绍： Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.