Journal
OPTIK
Volume 247, Issue -, Pages -Publisher
ELSEVIER GMBH
DOI: 10.1016/j.ijleo.2021.167783
Keywords
Laser deposition; Microstructure; Thermal barrier coating; Microhardness; Wear resistance
Categories
Funding
- Innovation Program of Civil Aviation University of China [2020YJSO42]
- National Natural Science Foundation of China [U1633111]
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The study showed that adding zirconia can refine the microstructure of the coating, improve hardness, and reduce the friction coefficient. The wear pattern changed, and the high temperature resistance of the coating was enhanced.
In order to study the effect of zirconia on the properties of laser deposited Ni15 coating on Q345 steel, laser deposition experiments were carried out with LSJG-GQ-6000M3 laser equipment with rated power of 6000 watts. The effects of adding zirconia on the microstructure, wear resistance and thermal insulation of the coating were studied by electron microscope, energy dispersive spectrometer, hardness tester, friction and wear tester and thermocouple. Study found that the addition of zirconia can refine the microstructure, improve the hardness and reduce the friction coefficient. The wear pattern has changed, and the high temperature resistance of the coating is improved.
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