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

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.

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

Journal of Physics Conference Series ◽

10.1088/1742-6596/1885/3/032046 ◽

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

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A contribution to laser cladding of Ti-6Al-4V titanium alloy

Metallurgical Research & Technology ◽

10.1051/metal/2019060 ◽

2019 ◽

Vol 116 (6) ◽

pp. 634 ◽

Cited By ~ 2

Author(s):

Samar Reda Al-Sayed Ali ◽

Abdel Hamid Ahmed Hussein ◽

Adel Nofal ◽

Salah Ibrahim Hassab Elnaby ◽

Haytham Elgazzar

Keyword(s):

Wear Resistance ◽

Titanium Alloy ◽

Laser Cladding ◽

Continuous Wave ◽

Interaction Time ◽

Laser Interaction ◽

Clad Layer ◽

Powder Flow Rate ◽

Wear Evaluation ◽

Hardness Values

A wear resistant coating was successfully made on an annealed Ti-6Al-4V titanium alloy by laser surface cladding using 60 wt.% WC + wt.% 40 NiCrBSi powder blends. Coaxial laser cladding was performed by means of Yb:YAG disk laser with a 3-KW continuous wave. Different laser interaction times were attempted to get the optimal conditions for promising mechanical properties. The new contribution was to accomplish larger clad layer thickness with applying the shortest possible laser interaction time that can achieve superior clad layer properties. This will decrease energy consumption with an expected money saving which is an essential factor for successful engineering solutions. A high powder flow rate of 20 g.min−1 was intended in order to obtain a thick, nonporous and crack free clad layer. The clad samples were subjected to thorough microstructure investigations, in addition to microhardness and wear evaluation. The coating so produced exhibits multiple hardness values and exceptional wear resistance under adhesive/sliding wear conditions. The obtained results expose clad layer with superior quality that was achieved at a laser interaction time of 0.3 s. An enhancement in the microhardness values of the clad layers by more than fourfold was attained and the wear resistance was thus significantly improved.

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

Surface Review and Letters ◽

10.1142/s0218625x11014527 ◽

2011 ◽

Vol 18 (03n04) ◽

pp. 103-108 ◽

Cited By ~ 12

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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Effect of CeO2 on crack sensitivity and tribological properties of Ni60A coatings prepared by laser cladding

Advances in Mechanical Engineering ◽

10.1177/16878140211013125 ◽

2021 ◽

Vol 13 (4) ◽

pp. 168781402110131

Author(s):

Gong Yuling ◽

Wu Meiping ◽

Miao Xiaojin ◽

Cui Chen

Keyword(s):

Wear Resistance ◽

Titanium Alloy ◽

Laser Cladding ◽

Composite Coatings ◽

Energy Dispersive Spectrometer ◽

Wear Test ◽

Hardness Test ◽

High Wear Resistance ◽

Fine Crystal ◽

Tc4 Titanium Alloy

All the time, the wear resistance of TC4 titanium alloy restricts its application in friction parts. In order to solve this problem, in this work, CeO2/Ni60A composite coatings (0, 1, 2, 3, 4 wt.% CeO2) were prepared on TC4 titanium alloy by laser cladding technology. The detection and characterization of the coatings were mainly carried out by X-ray diffraction (XRD), Scanning electron microscope (SEM), Energy-dispersive spectrometer, Vickers hardness test, and wear test. The results showed that appropriate proportion of CeO2 powder could effectively reduce the crack sensitivity of Ni60A coating on TC4 substrate. While the amount of CeO2 powder was 3wt.%, there were no obvious cracks, pores, and other defects in the coating. Coatings mainly consisted of Ti2Ni, TiC, TiB2, Ce2O3, and the substrate α–Ti. CeO2 has negligible influence on the composition of the phase, but it significantly increased the absorption rate of the powder to light, promoted the fluidity of the molten pool. Among five coatings, the average hardness of the 3Ce coating was the highest and the highest hardness value could reach 1163.7 HV0.3, which was 3.58 times higher than TC4 substrate, the friction coefficient was 0.307, and the wear rate was 1.11 × 10−5 mm3/N m, which reflected extremely high wear resistance performance. Adding an appropriate amount of CeO2 improved the microstructure of the coating, and realized the fine crystal strengthening of the coating.

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Microstructure and performance of YTaO4 coating deposited by atmospheric plasma spraying on TC4 titanium alloy surface

Surface and Coatings Technology ◽

10.1016/j.surfcoat.2021.128004 ◽

2021 ◽

pp. 128004

Author(s):

Jing Feng ◽

Jun Wang ◽

Kailong Yang ◽

Ju Rong

Keyword(s):

Titanium Alloy ◽

Plasma Spraying ◽

Atmospheric Plasma Spraying ◽

Atmospheric Plasma ◽

Alloy Surface ◽

Tc4 Titanium Alloy ◽

And Performance ◽

Microstructure And Performance

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Laser Cladding In-Situ Ti(C,N) Particles Reinforced Ni-Based Composite Coatings Modified with CeO2 Nanoparticles

Metals ◽

10.3390/met8080601 ◽

2018 ◽

Vol 8 (8) ◽

pp. 601 ◽

Cited By ~ 11

Author(s):

Tao Chen ◽

Fan Wu ◽

Haojun Wang ◽

Defu Liu

Keyword(s):

Wear Resistance ◽

Titanium Alloy ◽

Laser Cladding ◽

Formation Mechanism ◽

Nucleation Rate ◽

Composite Coatings ◽

Ceo2 Nanoparticles ◽

Engineering Applications

To improve the wear resistance of titanium alloy parts used in the engineering applications, in-situ formed Ti(C,N) particles reinforcing Ni-based composite coatings are fabricated on Ti6Al4V alloys by the laser cladding technique using Ni60, C, TiN, and small amounts of CeO2 nanoparticles mixed powders as the pre-placed materials. Firstly, the formation mechanism of Ti(C,N) particles as a reinforced phase in the coating is investigated. Then, the influences of CeO2 nanoparticles on microstructures and wear resistance of the coatings are analyzed. It is indicated that the large Ti(C,N) particles form around TiN particles, and the small Ti(C,N) particles form through independent nucleation. CeO2 nanoparticles play important roles in increasing the nucleation rate and improving the precipitation of Ti(C,N), hence the microstructures and wear resistance of the coatings are apparently improved after adding CeO2 nanoparticles. It is observed that the 1 wt % content of CeO2 additive in the pre-placed powders is the best choice for the wear resistance of the coatings.

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