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Effect of ZrO 2 ( YPSZ ) on Microstructure Characteristic and Wear Resistance of the Ti 3 Al/TiC Laser‐Cladded Ceramic Layer on Titanium Alloy
Author(s) -
Li Jianing,
Chen Chuanzhong
Publication year - 2012
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2011.02692.x
Subject(s) - materials science , cubic zirconia , yttria stabilized zirconia , microstructure , ceramic , coating , scanning electron microscope , composite material , chemical engineering , engineering
Laser cladding of the A 3 Ti + TiC preplaced powders on the Ti–6Al–4V alloy can form the Ti 3 Al/TiC ceramic layer, which improved the wear resistance of the substrate. In this study, the influence of 7 wt% yttria partially stabilized zirconia ( YPSZ ) on the surface performance of the Ti 3 Al/TiC ceramic layer was researched, and the Al 3 Ti + TiC / YPSZ laser‐cladded coating has been researched by means of X ‐ray diffraction, scanning electron microscope, and energy dispersive spectrometer. It was found that laser cladding of YPSZ can control the cracks in the Ti 3 Al/TiC ceramic layer. Furthermore, due to the action of YPSZ , stratification was observed in this ceramic layer. The upper layer in this coating consisted of Al 2 O 3, Ti 3 Al , t ‐ ZrO 2 , TiC, TiO 2 and ZrSiO 4 , and Ti 3 Al/Al 2 O 3 were the matrix of this region. This upper layer exhibited an excellent wear resistance due to its phase constituent. During the cladding process, YPSZ had a very marked trend to float on the surface of the coating. Therefore, the upper layer showed better wear resistance than that of the bottom layer due to the action of the high YPSZ content.