Influence of Titanium Surface Porosity on Adhesive Strength of Coatings Containing Calcium Silicate

Autor:	Vadim Timchenko, Yury N. Kulchin, I. G. Zhevtun, S. B. Yarusova, Alexander Nikitin, P. S. Gordienko, A. V. Golub, Pavel A. Nikiforov, Dmitry Pivovarov
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	Materials science titanium alloy chemistry.chemical_element 02 engineering and technology engineering.material 010402 general chemistry 01 natural sciences Wollastonite lcsh:Technology Article Corrosion chemistry.chemical_compound wollastonite lead silicate binder Coating General Materials Science Composite material Porosity lcsh:Microscopy lcsh:QC120-168.85 silicate coating Titanium carbide lcsh:QH201-278.5 lcsh:T surface porosity technology industry and agriculture Titanium alloy adhesive strength titanium carbide 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry lcsh:TA1-2040 Calcium silicate laser cladding engineering lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 Titanium
Zdroj:	Materials Volume 13 Issue 20 Materials, Vol 13, Iss 4493, p 4493 (2020)
ISSN:	1996-1944
DOI:	10.3390/ma13204493
Popis:	Titanium-based alloys are widely used in aerospace engineering. They have good mechanical and corrosion properties but, in some cases, the material itself or the coating should meet some additional requirements. For example, it may be a requirement of high reflectance to provide effective temperature control. Wollastonite is a promising component for reflective coatings because it improves both their whiteness and mechanical properties. This paper presents the results of studying the composition, the structure and the adhesive strength of wollastonite-containing silicate coatings to titanium substrate. The surface of titanium samples was pre-treated by laser cladding with TiC and etching to provide surface porosity. It has been shown that such treatment allows a significantly increase in the adhesive strength of the coating to the substrate. A decrease in the adhesive strength was observed on titanium samples with an excess of TiO2 on the surface. This is caused by the formation of crystalline PbTiO3 at the interface.
Databáze:	OpenAIRE
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