Journal article
Microstructure, mechanical and wear properties of laser processed SiC particle reinforced coatings on titanium
Surface & coatings technology, Vol.205(19), pp.4366-4373
06/25/2011
Handle:
https://hdl.handle.net/2376/116406
Abstract
Laser processing of Ti–SiC composite coating on titanium was carried out to improve wear resistance using Laser Engineered Net Shaping (LENS™) — a commercial rapid prototyping technology. During the coating process a Nd:YAG laser was used to create small liquid metal pool on the surface of Ti substrate in to which SiC powder was injected to create Ti–SiC metal matrix composite layer. The composite layers were characterized using X-ray diffraction, scanning and transmission electron microscopy equipped with fine probe chemical analysis. Laser parameters were found to have strong influence on the dissolution of SiC, leading to the formation of TiSi2, Ti5Si3 and TiC with a large amount of SiC on the surface. Detailed matrix microstructural analysis showed the formation of non-stoichiometric compounds and TiSi2 in the matrix due to non-equilibrium rapid solidification during laser processing. The average Young's modulus of the composite coatings was found to be in the range of 602 and 757GPa. Under dry sliding conditions, a considerable increase in wear resistance was observed, i.e., 5.91×10−4mm3/Nm for the SiC reinforced coatings and 1.3×10−3mm3/Nm for the Ti substrate at identical test conditions.
► LENS™ was used to create Ti–SiC composite coatings on titanium. ► Laser parameters found to have measurable influence on the dissolution of SiC and resultant intermetallics. ► Microstructural analysis showed nonstoichiometric compounds due to rapid solidification. ► Considerable increase in wear resistance was observed for Ti–SiC composite coatings.
Metrics
2 Record Views
Details
- Title
- Microstructure, mechanical and wear properties of laser processed SiC particle reinforced coatings on titanium
- Creators
- Mitun Das - Central Glass & Ceramic Research Institute (CSIR), 196, Raja S. C. Mullick Road, Kolkata-700032, IndiaSandip Bysakh - Central Glass & Ceramic Research Institute (CSIR), 196, Raja S. C. Mullick Road, Kolkata-700032, IndiaDebabrata Basu - Central Glass & Ceramic Research Institute (CSIR), 196, Raja S. C. Mullick Road, Kolkata-700032, IndiaT.S Sampath Kumar - Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai-60036, IndiaVamsi Krishna Balla - School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USASusmita Bose - School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USAAmit Bandyopadhyay - School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164, USA
- Publication Details
- Surface & coatings technology, Vol.205(19), pp.4366-4373
- Academic Unit
- Mechanical and Materials Engineering, School of
- Publisher
- Elsevier B.V
- Identifiers
- 99900548014101842
- Language
- English
- Resource Type
- Journal article