Sahu, J K (2014) TiB2-TiC-Al2O3 coating on Aluminium substrate by in-situ laser coating process using pulsed Nd: YAG laser. MTech thesis.
To improve the microhardness and wear resistance of mechanical components, laser coating has been applied to deposit in situ TiB2-TiC-Al2O3 coating on Aluminium substrate using Titanium oxide, Boron carbide and Aluminium as the coating powder. The phase constituents and microstructure of the composite coating were investigated using field emission scanning electron micrograph (SEM) and X-ray diffraction (XRD). Vicker’s Microhardness tester was used to measure the microhardness at the coating cross section. Results show that crack free composite coating with metallurgical bonding to the aluminium substrate obtained. Microstructure analysis confirms the formation of TiB2, TiC and Al2O3 in the coating zone. The microhardness improved significantly in comparison to the as-received Aluminium substrate due to the presence of the hard reinforcement TiB2 and TiC.
|Item Type:||Thesis (MTech)|
|Uncontrolled Keywords:||Dilution; Laser Coating; Overlapping; Microhardness; Reinforcement|
|Subjects:||Engineering and Technology > Mechanical Engineering > Production Engineering|
|Divisions:||Engineering and Technology > Department of Mechanical Engineering|
|Deposited By:||Hemanta Biswal|
|Deposited On:||11 Aug 2014 09:45|
|Last Modified:||11 Aug 2014 09:45|
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