Detonation spraying of Ti-Cu mixtures in different atmospheres: Carbon, nitrogen and oxygen uptake by the powders

Detonation spraying of Ti-Cu mixtures in different atmospheres: Carbon, nitrogen and oxygen uptake by the powders Full article

Journal

Surfaces and Interfaces
ISSN: 2468-0230

Output data

Year: 2020, Volume: 21, Pages: 100676 Pages count : 1 DOI: 10.1016/j.surfin.2020.100676

Tags

Carbon; Coating; Detonation spraying; Hardness; Incomplete combustion; Microstructure

Authors

Shtertser Alexandr A. ¹ , Batraev Igor S. ¹ , Ulianitsky Vladimir Yu. ¹ , Kuchumova Ivanna D. ^1,2 , Bulina Natalia V. ³ , Ukhina Arina V. ³ , Bokhonov Boris B. ³ , Dudina Dina V. ^1,2,3 , Trinh Pham Van ^4,5 , Phuong Doan Dinh ^4,5

Affiliations

1	Lavrentyev Institute of Hydrodynamics SB RAS
2	Novosibirsk State Technical University
3	Institute of Solid State Chemistry and Mechanochemistry SB RAS,
4	d Institute of Materials Science, Vietnam Academy of Science and Technology (VAST)
5	Graduate University of Science and Technology, Vietnam Academy of Science and Technology (VAST)

Funding (1)

Российский фонд фундаментальных исследований

20-53-54001 Вьет_а

The phase composition and microstructure of coatings formed by detonation spraying of Ti-Cu powder mixtures using C2H2 + kO2 explosive charges with k varying from 0.7 to 2.0 were studied. The Ti-Cu system was selected to demonstrate the possibilities of forming metal matrix composites (MMCs) with in-situ synthesized ceramic particles during the coating deposition. The formation of composite microstructures needs to be considered when obtaining carbon-containing MMCs by detonation spraying using acetylene-oxygen mixtures at k ˂ 1. The focus of the present study is the phase formation, microstructure development and hardness variation of the coatings caused by carbon, oxygen and nitrogen uptake by the Ti-Cu mixtures during spraying. Carbon released in the form of graphene nanoplatelets as a result of incomplete combustion of acetylene at k = 0.7 reacted with titanium, and, in the presence of nitrogen (a carrier gas), the TiCxNy phase formed in the coatings. Copper was found to play a protective role, reducing the conversion degree of titanium into the ceramic phases. Deposits containing 21 – 44 wt.% of ceramic components formed when an explosive charge equal to 50% of the gun barrel volume was used, the nature and concentration of the ceramic phases depending on k. At k = 2.0 and an explosive charge of 50%, a composite coating reinforced with Ti2O3, TiO and TiN (comprising 41 wt.% in total) was obtained. This composite showed a microhardness of 480 HV, which was due to a high content of ceramic phases synthesized in situ during spraying.

Shtertser A.A. , Batraev I.S. , Ulianitsky V.Y. , Kuchumova I.D. , Bulina N.V. , Ukhina A.V. , Bokhonov B.B. , Dudina D.V. , Trinh P.V. , Phuong D.D.
Detonation spraying of Ti-Cu mixtures in different atmospheres: Carbon, nitrogen and oxygen uptake by the powders
Surfaces and Interfaces. 2020. V.21. P.100676. DOI: 10.1016/j.surfin.2020.100676 WOS Scopus РИНЦ OpenAlex

Web of science:	WOS:000606827500002
Scopus:	2-s2.0-85091095638
Elibrary:	45280365
OpenAlex:	W3084381768

DB	Citing
Scopus	12
OpenAlex	12
Elibrary	8
Web of science	11