The influence of morphology and composition of metal–carbide coatings deposited on the diamond surface on the properties of copper–diamond composites

The influence of morphology and composition of metal–carbide coatings deposited on the diamond surface on the properties of copper–diamond composites Full article

Journal

Surface and Coatings Technology
ISSN: 0257-8972

Output data

Year: 2020, Volume: 401, Pages: 126272 Pages count : 1 DOI: 10.1016/j.surfcoat.2020.126272

Tags

Coating; Copper–diamond composite; Microstructure; Thermal conductivity

Authors

Ukhina Arina V. ¹ , Dudina Dina V. ^1,2 , Esikov Maksim A. ² , Samoshkin Dmitrii A. ³ , Stankus Sergei V. ³ , Skovorodin Ivan N. ⁴ , Galashov Evgeny N. ⁵ , Bokhonov Boris B. ¹

Affiliations

1	Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of the Russian Academy of Sciences
2	Lavrentyev Institute of Hydrodynamics, Siberian Branch of the Russian Academy of Sciences
3	Kutateladze Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences
4	Institute of Automation and Electrometry, Siberian Branch of the Russian Academy of Sciences,
5	Novosibirsk State University

In this work, tungsten- and molybdenum-containing coatings on diamond were obtained by rotary chemical vapor deposition (RCVD) or by treating the diamond microcrystals in a hot press (HP)/spark plasma sintering (SPS) facility. In the HP facility, heating was realized by external heating elements; no electric current was passing through or induced in the die. In RCVD, tungsten carbonyl W(CO)6 was used as a precursor. In the case of HP and SPS, powders of tungsten, molybdenum and tungsten trioxide WO3 were used as sources of the metal. It was found that the morphology and phase composition of the coatings depend on the deposition conditions and the metal source. HP and SPS were further used for fabricating bulk copper–50 vol% diamond composites. The thermal conductivity of the copper–diamond composites decreased as the holding time during their consolidation by HP or SPS increased owing to delamination of the WC coating from the diamond surface. A Mo-containing coating deposited by the SPS treatment allowed obtaining a copper–diamond composite with a thermal conductivity of 420 W m−1 K−1.

Ukhina A.V. , Dudina D.V. , Esikov M.A. , Samoshkin D.A. , Stankus S.V. , Skovorodin I.N. , Galashov E.N. , Bokhonov B.B.
The influence of morphology and composition of metal–carbide coatings deposited on the diamond surface on the properties of copper–diamond composites
Surface and Coatings Technology. 2020. V.401. P.126272. DOI: 10.1016/j.surfcoat.2020.126272 WOS Scopus РИНЦ OpenAlex

Web of science:	WOS:000583161500028
Scopus:	2-s2.0-85089353108
Elibrary:	45362526
OpenAlex:	W3048243469

DB	Citing
Scopus	33
OpenAlex	34
Elibrary	33
Web of science	34