Effect of TiN on microstructure and properties of Co-based alloy coating by laser cladding

Zhiyuan, 李志远 Li; Weiyi, 赵伟毅 Zhao; Dengpan, 聂登攀 Nie; Hao, 何灏 He; Jiarui, 耿家锐 Geng; Tao, 薛涛 Xue

doi:10.3788/hplpb20102207.1657

Cited by 4 publications

(2 citation statements)

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“…Like other hard particles, titanium nitride also decomposes; upon decomposition of TiN, Ti preferentially reacts with C to precipitate TiC hard phases. TiN and TiC particles have good compatibility and low internal stress, meaning that using TiN to reinforce cobalt-based materials actually forms a dual-phase reinforcement [28][29][30]. Wang and Hu [31] utilized the "pre-nitridation + pulsed laser cladding" method to leverage the rapid heating and cooling characteristics of laser cladding, refining large-sized particles to form a novel intrinsic reinforced phase with micro and nano TiN "nested" within each other, improving hardness characteristics more effectively in depth.…”

Section: Nitride Hard Particlesmentioning

confidence: 99%

Advances in Laser-Clad, Particle-Reinforced Wear-Resistant Coatings: Enhancing Durability Through Material Innovation

Wang,

Luo,

Cai

et al. 2023

JSE

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The quest for superior wear-resistant coatings has led to significant advancements in laser cladding technology, yet the escalating requirements for durability under operational conditions challenge the efficacy of existing solutions. This investigation delves into the enhancement of wear resistance in coatings through the integration of particle reinforcement phases, identified as a cost-effective strategy for augmenting coating performance. Emphasis is placed on the systematic classification of particle reinforcements and the methodologies employed for their incorporation. The focus is particularly cast on the incorporation of hard and self-lubricating particles into laser-clad wear-resistant coatings, highlighting innovations in particle addition techniques. An examination of the mechanisms through which hard particles-comprising oxides, carbides, nitrides, borides, and their multifaceted compounds-reinforce coatings is presented, delineating the influence of particle content, size, and morphology on wear resistance. Additionally, the paper explores the state of research on the self-lubricating properties imparted by sulfides, fluorides, graphite, and MAX phase particles under varied thermal conditions. A critical analysis of the benefits and limitations associated with the use of hard and self-lubricating particles in the enhancement of coating durability is conducted. This comprehensive review serves not only to elucidate the current landscape of particle-reinforced, laser-clad coatings but also to inform future research directions aimed at developing coatings capable of withstanding high temperatures and exhibiting exceptional hardness. The commitment to leveraging in situ synthesis for the development of these advanced materials underscores the potential for significant breakthroughs in the field of wear-resistant coatings.

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Section: Nitride Hard Particlesmentioning

confidence: 99%

Advances in Laser-Clad, Particle-Reinforced Wear-Resistant Coatings: Enhancing Durability Through Material Innovation

Wang,

Luo,

Cai

et al. 2023

JSE

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“…e results show that TiN has a significant improvement effect on the structure of the cladding layer, which promotes the refinement of its structure, and the dendrite is equiaxed. Crystal transformation can also significantly improve the microhardness and wear resistance of Co-based alloy coatings [17]. Song-hua et al studied the laser cladding of Co60 and the addition of Cr 2 C 3 /Co coatings with different contents of Cr 2 C 3 (wt.%) on the surface of low-carbon steel.…”

Section: Introductionmentioning

confidence: 99%

Wear Properties of TiC‐Reinforced Co50 Composite Coatings from Room Temperature to High Temperature

Pham

Nguyen

2020

Advances in Materials Science and Engineering

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In this paper, the laser cladding is created by using Co50 powder and TiC mixture, covering a H13 hot-working steel substrate. The samples are analyzed by the hardness test, XRD, SEM, and friction test to identify the forming phases, microhardness distribution, and wear-resistant characteristics. The results indicated that hardness reduces from the coating zone to the substrate, achieving the highest value at the coating zone. Increasing the content of TiC results in improving the coating hardness. The coatings with 10%–20% TiC show high-quality surface morphology and macrograph. With 30% TiC, the hardness obtains a higher hardness, but the surface appears to crack. The microstructures of the coatings present a well-mixed and well-distribution of the TiC particle on the Co matrix. The friction coefficient of H13 steel and Co50 coating reaches the maximum value when the load is 50 N and mostly decreases with the increase in the load. The wear rates of H13 steel and Co50 coatings mainly increase with the increase in the load. The temperature has a greater influence on the friction coefficient of the Co50 coating. However, the temperature has a small effect on the friction coefficient of the 20% TiC coating. The wear resistance of 20% TiC coating is higher than that of H13 steel, Co50 coating, and 10% TiC composite coating. At room temperature, the wear mechanism of the coating is mainly brittle spalling, adhesive wear, and ploughing. At 700°C, the wear mechanism is mostly oxidation wear and fatigue wear. After laser cladding, the service life of the coated surface could be greatly improved. The Co + 20% TiC coating has high hardness and wear resistance.

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Structure and microwave absorption properties of Nd–Co–Ni alloys

Qiao

Pan

Xiong

et al. 2016

J Mater Sci: Mater Electron

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To study the effect of Ni content on microwave absorption of Nd 2 Co 17 alloy. The Nd 2 Co 17-x Ni x (X = 0.0, 0.2, 0.6, 1.0, 1.4) powders were prepared by arc smelting and high energy ball milling method. The structure and morphology of the powder were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The electromagnetic parameters of the powder were measured by vector network analyzer (VNA) at room temperature. The XRD results indicate that the prepared powder maintain the Nd 2 Co 17 phase. The minimum reflectivity value frequency shifts towards the lower frequency with the increase of Ni content. The minimum reflectivity value of Nd 2 Co 15.6 Ni 1.4 alloy reaches about -26.6 dB at 2.9 GHz with the matching thickness of 2.2 mm. And the milled powder was tempered ranging of 50-200°C for 1 h. The minimum reflectivity frequency shifts to higher frequency region compared to the powder without heat treatment. The absorbing frequency bandwidth increases with the tempering treatment increase.

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Effect of TiN on microstructure and properties of Co-based alloy coating by laser cladding

Cited by 4 publications

References 0 publications

Advances in Laser-Clad, Particle-Reinforced Wear-Resistant Coatings: Enhancing Durability Through Material Innovation

Advances in Laser-Clad, Particle-Reinforced Wear-Resistant Coatings: Enhancing Durability Through Material Innovation

Wear Properties of TiC‐Reinforced Co50 Composite Coatings from Room Temperature to High Temperature

Structure and microwave absorption properties of Nd–Co–Ni alloys

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