Microstructures and tribological properties of laser cladded Ti-based metallic glass composite coatings

Lan, Xiaodong; Wu, Hong; Liu, Yong; Zhang, Weidong; Li, Ruidi; Chen, Shiqi; Zai, Xiongfei; Hu, Te

doi:10.1016/j.matchar.2016.08.026

Cited by 49 publications

(10 citation statements)

References 46 publications

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“…The structure of as-received MgH 2 is a tetragonal beta phase (β-MgH 2 ). Two amorphous TiCu-based powders with nominal compositions of Ti 45 Cu 41 Ni 9 Zr 5 (denoted as a-TCNZ) and Ti 40 Cu 47 Zr 10 Sn 3 (denoted as a-TCZS) were prepared by the gas-atomization method . The atomized a-TCNZ and a-TCZS powders were sieved to ensure that their dimensions were below 75 μm.…”

Section: Methodsmentioning

confidence: 99%

Amorphous TiCu-Based Additives for Improving Hydrogen Storage Properties of Magnesium Hydride

Zhou

Bowman²,

Fang

et al. 2019

ACS Appl. Mater. Interfaces

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Magnesium hydride has long been regarded as a promising candidate material for hydrogen and heat storage due to its high hydrogen capacity, reversibility, and low cost. Catalytic doping has been demonstrated as one of the most effective methods to improve hydrogen storage properties of MgH2. In this study, amorphous Ti45Cu41Ni9Zr5 and Ti40Cu47Zr10Sn3 alloys are used as additives for MgH2. Nanostructured MgH2 doped with amorphous or crystalline TiCu-based alloys are prepared by using a high-energy mechanochemical synthesis method. Results show that the amorphous TiCu additives provide enhanced catalytic effects compared to crystalline alloys of the same composition. Doping MgH2 using an amorphous Ti45Cu41Ni9Zr5 alloy yielded improved dehydrogenation kinetics compared to using crystalline Ti40Cu47Zr10Sn3 alloy. The analysis using transmission electron microscopy reveals that there are nanostructured catalytic particles uniformly distributed in the amorphous TiCu-catalyzed MgH2. The MgH2 system catalyzed by amorphous TiCu-based alloy shows little degradation during hydrogenation and dehydrogenation cycling at 300 °C. The amorphous TiCu-based catalysts are thermally stable at temperatures up to 360 °C. Heating the amorphous Ti45Cu41Ni9Zr5-catalyzed MgH2 to temperatures above 360 °C led to disproportionation of the catalyst alloy and the formation of MgCu2 and Ti2Cu. In addition, PCI analysis of the amorphous Ti45Cu41Ni9Zr5-catalyzed MgH2 shows a slight increase in hydrogen equilibrium pressure, resulting in a reaction enthalpy of −78.7 kJ/mol·H2 and an entropy of 145.0 J/K·mol·H2. The entropy calculated from this study is approximately 10 J/K·mol·H2 higher than values previously reported for undoped and catalyzed Mg–H systems.

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Section: Methodsmentioning

confidence: 99%

Amorphous TiCu-Based Additives for Improving Hydrogen Storage Properties of Magnesium Hydride

Zhou

Bowman²,

Fang

et al. 2019

ACS Appl. Mater. Interfaces

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“…Ti6Al4V was selected as the substrate material and cut into cuboid specimens with the dimensions of 60 mm × 40 mm × 10 mm. The optimized design for the coating material system is listed in Table 1, and the selection criteria of the coating materials were as follows: Ti6Al4V is beneficial to the improvement in the wettability between the precipitation phases and the matrix [19]. Ni, B, C elements offered by Ni60 can react with the Ti element to form intermetallic compounds and ceramic reinforcing phases with high hardness that can effectively increase the microhardness and tribological performance of the coatings [8].…”

Section: Methodsmentioning

confidence: 99%

Microstructure and Tribological Properties of Lubricating-Reinforcing Laser Cladding Composite Coating with the Ti2SC-Ti2Ni Mosaic Structure Phase

et al. 2022

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Lubricating-reinforcing composite coatings were successfully prepared on Ti6Al4V using laser-clad Ti6Al4V/Ni60/Ni-MoS2 mixed powders with different Ni-MoS2 contents (25, 35, and 45 wt.%), and their microstructure and tribological properties were studied. The reinforcing phase TiC, Ti2Ni, and the lubricating phase Ti2SC were in situ precipitated while Ti2SC and Ti2Ni formed a mosaic coherent structure within the above three coatings. In the 25 and 45 wt.% Ni-MoS2 coatings, the microstructure distribution uniformity of the coatings was not effectively improved by the Ti2SC-Ti2Ni mosaic structure phase due to the lower or higher content of Ti2SC. In the 35 wt.% Ni-MoS2 coating, the forming quality of the coating was the best due to an appropriate amount of the uniformly distributed Ti2SC-Ti2Ni mosaic structure phase. Furthermore, the microhardness of the coatings gradually decreased as the amount of Ni-MoS2 increased. In the 35 wt.% Ni-MoS2 coating, due to the uniformly and diffusely distributed Ti2SC-Ti2Ni mosaic structure phase, the stable lubricating-reinforcing mosaic structure transfer composite films were formed during the progress of the friction and wear tests, which led to the optimal worn surface evenness and quality, the anti-friction and the wear resistance properties compared with the Ti6Al4V, 25 and 45 wt.% Ni-MoS2 coating.

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“…Compared to traditional methods, the laser cladding (LC) technique is becoming increasingly popular due to its low cost, high flexibility, and strong metallurgical bond with no risk of coating delamination [22,23]. Besides, the technique 2 of 13 is capable of producing fine microstructures with outstanding mechanical properties, including strength and fracture resistant [24][25][26]. Fallah et al [27] reported that LC-built Ti-Nb alloys could restrain toxic V ions releasing from Ti6Al4V and steel substrates.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Corrosion Behavior of Ti-Nb Coatings on NiTi Substrate Fabricated by Laser Cladding

Hu¹,

Ren²,

Huang³

et al. 2021

Coatings

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Ti-23Nb (at.%) coatings on an NiTi alloy with metallurgical bonding were prepared by laser cladding (LC) technology using Ti-Nb mixture powders. The effects of laser processing parameters on the microstructure and mechanical properties of the coatings were systematically investigated and the corrosion resistance of the coatings was assessed. The coatings were composed of TiNb, (Ti, Nb)2Ni, and β-Nb phases. The coatings increased the hardness of the NiTi alloy by a combined strengthening effect of the eutectics and fine microstructure. The corrosion resistance of the coated part was improved. The coatings with great corrosion resistance could keep the coated parts inert in an aggressive environment, and effectively restrain the release of toxic Ni ions, which means that the Ti-Nb alloy coatings are likely to be used as a biomaterial for medical applications.

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Microstructures and tribological properties of laser cladded Ti-based metallic glass composite coatings

Cited by 49 publications

References 46 publications

Amorphous TiCu-Based Additives for Improving Hydrogen Storage Properties of Magnesium Hydride

Amorphous TiCu-Based Additives for Improving Hydrogen Storage Properties of Magnesium Hydride

Microstructure and Tribological Properties of Lubricating-Reinforcing Laser Cladding Composite Coating with the Ti2SC-Ti2Ni Mosaic Structure Phase

Microstructure and Corrosion Behavior of Ti-Nb Coatings on NiTi Substrate Fabricated by Laser Cladding

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