scholarly journals Microstructure and Wear Resistance of WS2/W Composite Coating on TC4 Titanium Alloy Surface

2021 ◽  
Vol 1885 (3) ◽  
pp. 032046
Author(s):  
Junqi Huang ◽  
Jie Ma ◽  
Long Wu ◽  
Jianzhong Wei ◽  
Hongyi Li
Keyword(s):  
Wear Resistance ◽  
Titanium Alloy ◽  
Composite Coating ◽  
Alloy Surface ◽  
Tc4 Titanium Alloy

Study on TiCN/Ti Based Composite Coating Fabricated by Reactive Electric Spark Deposition

2012 ◽  
Vol 190-191 ◽  
pp. 567-570
Author(s):  
Jian Jun Hao ◽  
Liang Gao ◽  
Shu Hua Yang ◽  
Xiong Zhuang Li ◽  
Yue Jin Ma
Keyword(s):  
Titanium Alloy ◽  
Composite Coating ◽  
Graphite Electrode ◽  
Substrate Surface ◽  
Alloy Surface ◽  
Interfacial Behavior ◽  
Nitrogen Gas ◽  
Hardness Tester ◽  
Tc4 Titanium Alloy ◽  
Microhardness Profile

In order to improve the wear-resisting properties of titanium alloy surface, reactive electric spark deposition was carried out using a graphite electrode in a nitrogen gas atmosphere, and TiCN/Ti based composite coating was fabricated on TC4 titanium alloy surface. The surface morphology, microstructure, interfacial behavior between the coatings and substrate, phase and element composition of the coatings were investigated by scanning electron microscope（SEM), X-ray diffraction (XRD) and Auger electron spectroscopy (AES). The microhardness hardness distributions as a function of depth were measured by a micro-hardness tester. The results show that the coating about 20μm thick is continuous, close, and completely covering the substrate surface and mainly composed of the TiCN phase which is in-situ synthesized by the reaction among titanium from the substrate, carbon from the graphite electrode and nitrogen from the shielding nitrogen gas. The coating has a strong metallurgical bonding and adhesion to the substrate. Microhardness profile falls off with the coatings thickness increasing and the highest microhardness values of the superficial coating could be up to 1496HV, which is six times more than that of the substrate.

Erosive Wear Resistance Behavior of Laser Cladding Al2O3+13%TiO2Coating Prepared by Plasma Spraying on Titanium Alloy Surface

2010 ◽  
Vol 37 (3) ◽  
pp. 858-862 ◽  
Author(s):  
高雪松 Gao Xuesong ◽  
黄因慧 Huang Yinhui ◽  
田宗军 Tian Zongjun ◽  
刘志东 Liu Zhidong ◽  
沈理达 Shen Lida ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Titanium Alloy ◽  
Plasma Spraying ◽  
Laser Cladding ◽  
Erosive Wear ◽  
Alloy Surface

SURFACE PROPERTIES OF THE IN SITU FORMED CERAMICS REINFORCED COMPOSITE COATINGS ON TI-3AL-2V ALLOYS

2012 ◽  
Vol 19 (02) ◽  
pp. 1250009 ◽  
Author(s):  
PENG LIU ◽  
WEI GUO ◽  
DAKUI HU ◽  
HUI LUO ◽  
YUANBIN ZHANG
Keyword(s):  
Wear Resistance ◽  
Titanium Alloy ◽  
Composite Coating ◽  
Surface Properties ◽  
Laser Cladding ◽  
Composite Coatings ◽  
Micro Hardness ◽  
Reinforced Composite

The synthesis of hard composite coating on titanium alloy by laser cladding of Al/Fe/Ni+C/Si3N4 pre-placed powders has been investigated in detail. SEM result indicated that a composite coating with metallurgical joint to the substrate was formed. XRD result indicated that the composite coating mainly consisted of γ- (Fe, Ni) , FeAl , Ti3Al , TiC , TiNi , TiC0.3N0.7 , Ti2N , SiC , Ti5Si3 and TiNi . Compared with Ti-3Al-2V substrate, an improvement of the micro-hardness and the wear resistance was observed for this composite coating.

Study on Rare Earth Catalysis in the Boriding Process to Titanium Alloy

2011 ◽  
Vol 48-49 ◽  
pp. 1177-1181
Author(s):  
Feng Hua Li ◽  
Xiao Hong Yi ◽  
Jing Lei Zhang ◽  
Zhan Guo Fan
Keyword(s):  
Titanium Alloy ◽  
Surface Layer ◽  
Rare Earth ◽  
Phase Composition ◽  
Diffusion Layer ◽  
Alloy Surface ◽  
Tc4 Titanium Alloy ◽  
Boriding Process

Solid powder boriding experiment was carried out on TC4 titanium alloy surface with method of RE(rare earth)-boriding at the temperature of over 1000°C. By means of XRD, SEM and EDS, phase composition, microstructure and morphology of TC4 titanium alloy after RE-boriding were investigated. The effect of rare earth on phase composition was discussed. Results of the experiment showed that the diffusion layer was composed of top-layer TiB2 and sub-layer TiB whiskers with the highest thickness being 25μm. The XRD results revealed TiB-TiB2 biphasic B-Ti compounds layer formed on the surface of TC4 after RE-boriding. The high content of B and Ce in the surface layer showed rare earth increased the absorption and concentration of B atoms.

Investigation on TiCP/Al Composite Coating by TIG Cladding

2014 ◽  
Vol 490-491 ◽  
pp. 29-33 ◽  
Author(s):  
Wen Bo Tang ◽  
Cong Hui Lu ◽  
Yan Peng Li
Keyword(s):  
Wear Resistance ◽  
Composite Coating ◽  
Testing Machine ◽  
Wear Testing ◽  
Alloy Surface ◽  
Al Composite ◽  
The Matrix ◽  
Tic Particle

TiCp/Al composites coating was in-situ synthesized on the L1060 alloy surface by TIG cladding. The microstructure and the phase of the coating were analyzed by OM, SEM, ADS and XRD, and the properties was been tested by micro-hardnessmeter and wear testing machine. The results show that the composite coating has no porosity, inclusions and other defects. The microstructure of the composite coating mainly consists of TiC particle and aluminum. Microstructural evidence suggests that the formation of TiC occur not only by reaction between Ti dissolved in Al and Al4C3, but also by reaction between C dissolved in Al and Al3Ti. The hardness of the composite coating obtained by TIG cladding is up to 120HV0.2. The wear resistance of composite coating is 1.6 times more than that of the matrix.

PHASE CONSTITUENTS AND MICROSTRUCTURE OF Ti3Al/Fe3Al + TiN/TiB2 COMPOSITE COATING ON TITANIUM ALLOY

2011 ◽  
Vol 18 (03n04) ◽  
pp. 103-108 ◽  
Author(s):  
JIANING LI ◽  
CHUANZHONG CHEN ◽  
CUIFANG ZHANG
Keyword(s):  
Wear Resistance ◽  
Titanium Alloy ◽  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Composite Coating ◽  
Laser Cladding ◽  
X Ray Diffraction ◽  
X Ray ◽  
Laser Cladding Process ◽  
Scanning Electron

Laser cladding of the Fe3Al + B4C/TiN + Al2O3 pre-placed powders on the Ti-6Al-4V alloy can form the Ti3Al/Fe3Al + TiN/TiB2 composite coating, which improved the wear resistance of the Ti-6Al-4V alloy surface. In this study, the Ti3Al/Fe3Al + TiN/TiB2 composite coating has been researched by means of X-ray diffraction and scanning electron microscope. It was found that during the laser cladding process, Al2O3 can react with TiB2 , leading to the formations of Ti3Al and B . This principle can be used to improve the Fe3Al + B4C/TiN laser-cladded coating on the Ti-6Al-4V alloy. Furthermore, during the cladding process, C consumed the oxygen in Fe3Al + B4C /TiN + Al2O3 molten pool, which retarded the productions of the redundant metal oxides.

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