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6CCVD Research

Comparative study on the properties and microscopic mechanism of Ti coating and W coating diamond-copper composites

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2020-07-01
JournalMaterials Research Express
AuthorsShuhui Huang, Hong Guo, Zhen Zhang, Ximin Zhang, Haofeng Xie
InstitutionsState Key Laboratory of Nonferrous Metals and Processes, General Research Institute for Nonferrous Metals (China)
Citations18

Abstract

Section titled ā€œAbstractā€

Abstract Interface plays a decisive role in metal matrix composites, and the effects of Ti coating and W coating on the properties and microscopic mechanism of diamond-copper composites are compared in this paper. Ti-coated diamond with 50 nm, 100 nm and 150 nm plating thickness and W-coated diamond with 50 nm plating thickness are prepared by using magnetron sputtering. Then infiltration method is carried out to prepare diamond copper composites. SEM, EDS and XRD are used to material microstructure. Three-point bending experiment and flash method are used to test the bending strength and thermal conductivity of the composite material. The study found that, as the thickness of the Ti coating increases, the bending strength of the composites gradually increases, but the thermal conductivity first increases and then decreases. The thermal conductivity of W coated diamond copper composites is higher than that of Ti coated diamond copper composites with the same coating thickness. But bonding strength shows the opposite law. The reason for the above phenomenon is that the mechanism of action between the Ti coating and the W coating and the copper substrate is different at the micro interface of the composites. The research work has important reference value for the interface modification of diamond copper composites.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
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