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- Title
A new approach to study of TiB<sub>2</sub>-TiN-SiC based tribological coatings with solid lubrication.
- Authors
Misra, Debjit; Joardar, Hillol; Khaira, Avinandan; Mukhopadhyay, Suman; Chatterjee, Satyajit
- Abstract
An in-situ TiB2-TiN-SiC composite coating is deposited over steel substrate through laser treatment of a preplaced mixture of TiO2, SiO2, hBN and graphite powders. Coating's characteristics change significantly on individual additions of hBN and SiC to other constituents. This study focuses on checking the benefits of simultaneous addition of hBN and SiC on coating's properties using K-nearest neighbor (K-NN) methodology. Here, specific amounts of both hBN and SiC are added simultaneously in the precursor mixture (as found suitable through K-NN methodology) to study coating's characteristics in a situation where advantages of hBN as solid lubricant can be obtained without compromising the various mechanical properties. Characteristics of the coating developed with that composition of precursor mixture ensuring simultaneous addition of hBN and SiC is thoroughly studied through several microstructural, tribological and mechanical characterizations. On evaluation of tribological properties of the coating at varying loads, presence of both hBN and SiC shows interesting results. A coating with stoichiometric proportion of precursor mixture is also deposited and characterized for comparison.
- Subjects
COMPOSITE coating; PROTECTIVE coatings; TRIBOLOGY; SURFACE coatings; LASER deposition; SOLID lubricants; LUBRICATION &; lubricants; SOLIDS
- Publication
Sādhanā: Academy Proceedings in Engineering Sciences, 2021, Vol 46, Issue 4, p1
- ISSN
0256-2499
- Publication type
Article
- DOI
10.1007/s12046-021-01727-9