Investigation of microstructure and wear resistance of laser-clad CoCrNiTi and CrFeNiTi medium-entropy alloy coatings on Ti sheet

Xiang, Kang; Chai, Linjiang; Zhang, Chengquan; Guan, Hao; Wang, Yueyuan; Ma, Yuanyuan; Sun, Qi; Li, Yuqiong

doi:10.1016/j.optlastec.2021.107518

Cited by 64 publications

(4 citation statements)

References 41 publications

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“…Additionally, medium entropy (MEA) and high entropy alloys (HEA) with refractory metals as constituents can easily be fabricated using this technique, something that is difficult for other AM techniques [19]. Xiang et al [20,21] studied CoCrNiTi and CrFeNiTi MEA coatings and CoCrFeNiNbx HEA coatings on a Ti sheet by pulsed laser cladding. They obtained a higher amount of hardness and wear resistance than the substrate.…”

Section: Laser Claddingmentioning

confidence: 99%

In Vitro and Electrochemical Characterization of Laser-Cladded Ti-Nb-Ta Alloy for Biomedical Applications

et al. 2022

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Titanium (Ti) and its alloys are predominant choices for use as biomaterials in human implants. Research has shown the adverse effects of using commercial Ti alloy Ti-6Al-4V in the human body, and this presents a need for viable alternatives. In this study, Ti alloy Ti-17Nb-6Ta was manufactured by laser cladding—a prominent additive manufacturing (AM) technology. Laser cladded specimens were evaluated for their in vitro and electrochemical behavior. A human osteosarcoma cell line (MG-63 cells) was used for in vitro investigations. Cell proliferation was good in the physiological medium, and cells were alive when in contact with the laser cladded alloy, even after two to three weeks, indicating good cell viability and compatibility with this alloy. Electrochemical characterization was carried out in Ringer’s solution, and noticeably lower corrosion current density and corrosion rate values were observed. The lower amounts of these parameters indicated the passivation behavior due to multi-layer Ti, Nb, and Ta alloy oxide films. These oxide films also enhanced osseointegration. Thus, the Ti-17Nb-6Ta alloy can be an ideal biocompatible alternative to Ti-6Al-4V.

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Section: Laser Claddingmentioning

confidence: 99%

In Vitro and Electrochemical Characterization of Laser-Cladded Ti-Nb-Ta Alloy for Biomedical Applications

et al. 2022

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“…Summary of tribological properties of typical materials. The plot includes parameters for typical classes of materials that are developed for improved tribological properties, such as coarse-grained metals (CGMs), [14][15][16][17]23,[75][76][77][78][79][80][81] nanocrystalline (NC) metals, [15,16,[22][23][24]74,78,82,83] metallic glasses (MGs), [17,30,74,[79][80][81][84][85][86][87][88][89] MoS 2 , [90] and diamond-like carbon (DLC). [73,10,[91][92][93] above, tribological properties of metals are not solely determined by hardness and strength but also enormously influenced by both plasticity and crack resistance that can be modified by chemical and structural variables.…”

Section: Tribological Properties Of Selected Alloysmentioning

confidence: 99%

Achieving Diamond‐Like Wear in Ta‐Rich Metallic Glasses

et al. 2023

Advanced Science

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Most metals and alloys suffer from high friction and wear due to their low hardness and lack of self-lubrication. Although plenty of strategies have been proposed, it is still a long-standing challenge to achieve diamond-like wear in metals. Metallic glasses (MGs) are supposed to possess low coefficient of friction (COF) because of their high hardness and fast surface mobility. However, their wear rate is larger than that of diamond-like materials. Here, this work reports the discovery of Ta-rich MGs that exhibit diamond-like wear. This work develops an indentation approach for high-throughput characterization of crack resistance. By employing deep indentation loading, this work is able to efficiently identify the alloys that exhibit better plasticity and crack resistance according to the differences of indent morphology. With high temperature stability, high hardness, improved plasticity, and crack resistance, the discovered Ta-based MGs exhibit diamond-like tribological properties, featured by COF as low as ≈0.05 for diamond ball test and ≈0.15 for steel ball test, and specific wear rate of only ≈10 −7 mm 3 N −1 m −1 . The discovery approach and the discovered MGs exemplifie the promise to substantially reduce friction and wear of metals and may unleash the potential of MGs in tribological applications.

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“…The Cu element was added to the Ti-10Mo alloy to improve microhardness and tribo-corrosion resistance [14]. Two medium-entropy alloy coatings were prepared on a CP-Ti sheet by pulsed laser cladding, achieving a hardness of 762 HV and a specific wear rate of 1.7 × 10 −5 mm 3 •N −1 •m −1 [15]. A NiTi coating was prepared by the tungsten inert gas (TIG) cladding process, resulting in a microhardness of 680 HV 0.05 to enhance the wear resistance of the Ti6Al4V substrate [16].…”

Section: Introductionmentioning

confidence: 99%

A Comparison Study on the Microstructure, Mechanical Features, and Tribological Characteristics of TiN Coatings on Ti6Al4V Using Different Deposition Techniques

Liu,

Ren,

et al. 2024

Coatings

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Titanium alloys are considered lightweight alloys and are widely applied across various industries. However, their low hardness, poor wear resistance, and limited oxidation resistance restrict their prospects for wider application. In this paper, nitride coatings were prepared using three preparation processes, namely laser surface nitriding (LSN), physical vapor deposition (PVD), and plasma ion implantation (PII). Their microstructure, microhardness, tribological behavior, and high-temperature oxidation characteristics were compared. The experimental results revealed that nitrided coatings were successfully prepared using the three methods. However, a comparison of these data shows that the LSN coating exhibited superior comprehensive performance. It achieved the maximum thickness within the shortest preparation time: the thickness was about 280 μm and the deposition rate of the LSN method was 2250 and 90,000 times higher than those of the PVD and PII methods. Nitrides have high hardness, but the carrying capacity could be attributed to the thickness of the coatings: the PVD coating could withstand a force of 500 g, while the PII coating only withstood a force of less than 25 g. In addition, as hardness is the most important factor for excellent wear resistance, the average volumetric wear rate of the LSN and PVD coatings was about 9 × 10−6 mm3/m·N, and their relative wear resistance was 49.2 times that of Ti6Al4V. Meanwhile, the excellent bond between the LSN coating and the substrate was evidenced by a high-temperature oxidation test during a rapid heating–cooling cycle.

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Investigation of microstructure and wear resistance of laser-clad CoCrNiTi and CrFeNiTi medium-entropy alloy coatings on Ti sheet

Cited by 64 publications

References 41 publications

In Vitro and Electrochemical Characterization of Laser-Cladded Ti-Nb-Ta Alloy for Biomedical Applications

In Vitro and Electrochemical Characterization of Laser-Cladded Ti-Nb-Ta Alloy for Biomedical Applications

Achieving Diamond‐Like Wear in Ta‐Rich Metallic Glasses

A Comparison Study on the Microstructure, Mechanical Features, and Tribological Characteristics of TiN Coatings on Ti6Al4V Using Different Deposition Techniques

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