Microstructure and tribological performance of tungsten carbide reinforced stainless steel composite coatings by supersonic laser deposition

Li, Bo; Yao, Jianhua; Zhang, Qunli; Li, Zhihong; Yang, Lijing

doi:10.1016/j.surfcoat.2015.05.040

Cited by 35 publications

(11 citation statements)

References 29 publications

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“…Due to the softening effect by laser irradiation in the SLD process, the Cu powder particles became easier to deform, which favored lodging incident diamond particles to form intimate bonding, thus improving matrix/reinforcement interfacial bonding, compared with a CS counterpart. This suggestion has been confirmed for the SLD WC/SS316L composite coating in our previous work [20], in which the interfacial bonding between WC particulates and SS316L matrix was gradually improved with increasing the laser heating temperature.…”

Section: Coating Microstructuresupporting

confidence: 75%

“…This would result in more particles effectively deposited, thus raising deposition efficiency. In our previous studies, the beneficial effects of laser heating on deposition efficiency have been confirmed for some alloy powders and composite powders such as Stellite 6, WC/SS316L, WC/Stellite 6, diamond/Ni60 [20,28,33,35], in which the deposition efficiencies were monotonously increased with elevating laser inputting energy. However, in the present study, the deposition efficiency of diamond/Cu composite powder increased when laser power was low, but it decreased with further increasing laser power to a high level as demonstrated in Table 1.…”

Section: Deposition Efficiencymentioning

confidence: 75%

“…However, frequent cracking of the diamond phase was still observed because the Cu coating was too thin to act as a buffer, which therefore led to the direct impacting of diamond particles with each other. In addition, since the formation of CS coating relying on plastic deformation of both particles and substrates, it often suffers from weak bonding strength and low coating density, which causes the reinforcement particles to easily peel off from the coatings [20]. It is common to replace N 2 gas with expensive helium to increase particle impact velocity so as to increase effective deposition, and thereby achieve strong bonding strength and high coating density, but this could inevitably elevate the operating costs.…”

Section: Introductionmentioning

confidence: 99%

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Study on Microstructure and Tribological Performance of Diamond/Cu Composite Coating via Supersonic Laser Deposition

Zhang

et al. 2020

Coatings

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The supersonic laser deposition (SLD) of diamond/Cu composite powder is studied over a range of laser power. The deposition efficiency, coating microstructure, cohesive/adhesive bonding, phase composition, micro-hardness, and tribological property of the diamond/Cu composite coating are investigated. The results indicate that, as laser power is increased, deposition efficiency initially increases and then declines. The diamond particles distribute uniformly in the composite coating. Due to the increase of velocity ratio and total energy by laser irradiation, the cohesive/adhesive bonding of the composite coating is improved. The composite coating can preserve the phase composition of the origin powders due to the relatively low heat input during the SLD process. Slight oxidation of the Cu powder can be detected in the coatings prepared with high laser power, which has adverse effects on material deposition. The SLD-diamond/Cu composite coating has superior wear-resistance because of low friction coefficient, high micro-hardness, and uniformly distributed diamond particles.

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Section: Coating Microstructuresupporting

confidence: 75%

Section: Deposition Efficiencymentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

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Study on Microstructure and Tribological Performance of Diamond/Cu Composite Coating via Supersonic Laser Deposition

Zhang

et al. 2020

Coatings

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“…This reduction in capital and operating costs means that SLD may be viable in many applications, for which CS has proved too costly allowing the fully solid process route found in CS to find a use in a wider range of applications. A variety of material coatings such as Cu, Ti, Stellite 6, Ni60, Al-Cu and Al-Si alloys, have been successfully prepared with SLD technique [4][5][6][7][8][9][10][11][12][13][14][15][16].…”

mentioning

confidence: 99%

Research progress of supersonic laser deposition technology

Yao¹,

Kovalenko²

2016

The Paton Welding J.

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Supersonic laser deposition is a new coating and fabrication process, in which a supersonic powder stream generated in cold spray impinges onto a substrate which is simultaneously irradiated with a laser. It will be increasingly employed for depositing coatings and metal additive manufacturing because of its unique advantages: solid-state deposition of dense, homogeneous and pore-free coatings onto a range of substrate, high build rate at reduced operating costs without the use of expensive gas heating and large volumes of helium, and opening up a new opportunity for efficiently depositing high hardness metallic powders which are usually difficult to be deposited solely by cold spray. Based on the current research results in our group, this paper systematically reviews state-of-the-art of supersonic laser deposition technique at home and abroad, from the viewpoints of materials selection, process optimization, properties characterization, equipment design and so on. The existing issues in these aspects are deeply analyzed, and the corresponding solutions are tentatively proposed. Meanwhile, the potential industrial applications of supersonic laser deposition in various fields are elaborated in detail, as well as the future perspectives and challenges facing this technology, in order to provide insight for further investigations and innovation in supersonic laser deposition as an emerging combination additive re-manufacturing technology with high efficiency, low cost and high quality. 16 Ref., 18 Figures. K e y w o r d s : supersonic laser deposition, materials, process parameters, performances, applicationsSupersonic laser deposition (SLD) is a newly developed technology in the field of laser material processing, which can be used for surface modification and coating of engineering components for increased functionality [1][2][3]. This technology combines the supersonic powder beam found in cold spray (CS) with laser heating of the deposition site. In SLD, a laser heats both the spraying particles and the substrate to 30-80 % of their melting point, thus significantly reducing the strength of the particles and substrate, and allowing the particles to plastically deform and build up a coating at an impact velocity about half of that in CS.SLD technology has been increasingly employed for coating deposition because of its technological and economic advantages over conventional coating methods, namely solid-state deposition of dense, homogeneous and pore-free coatings onto a range of substrates; high deposition rate at reduced operating costs without the use of expensive heating and process inert gases; less sensitivity to feedstock materials characteristics; consolidation of difficultto-deposit powders; and significant improvements in the properties of coating materials. More importantly, lower processing temperatures and shorter processing time of SLD technique will enable the coating, and fabrication of near-net shape components with little or no melting, thus avoiding the deleterious effects of high-temperatur...

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“…такое снижение капитальных эксплуатационных затрат означает, что SLD может быть более рациональ-ным для случаев в которых CS зарекомендовал себя слишком дорогим, обеспечивая полностью твердый процесс, что позволяет расширить диапа-зон его применения. этим способом успешно вы-полнены разнообразные покрытия из таких мате-риалов, как Cu, Ti, стеллит 6, Ni60, сплав Al-Cu, сплав Al-Si [4][5][6][7][8][9][10][11][12][13][14][15][16].…”

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Research progress of supersonic laser deposition technology

Yao¹,

Kovalenko²

2016

Avtom. svarka (Kiev)

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сверхзвуковое лазерное напыление (SLD) -это новый процесс нанесения и получения покрытий, при котором сверхзвуковой поток порошка, генерируемый в холодную струю (CS), проникает на подложку, которая одновременно облучается лазером. этот процесс находит все большее применение для напыления покрытий и аддитивного изго-товления металлических изделий благодаря ряду своих уникальных преимуществ: напыления (осаждения) в твердом состоянии плотных, однородных и непористых покрытий на подложку, высокой скорости процесса при сниженных эксплуатационных расходах без применения дорогостоящего газового нагрева и больших объемов гелия. Данный про-цесс открывает также новые возможности для эффективного напыления металлических порошков высокой твердости, которые, как правило, трудно напылять, используя только CS. На основе результатов исследования в статье проведен систематический обзор состояния дел в области применения способа сверхзвукового лазерного напыления с точки зре-ния выбора материалов, оптимизации процесса, определения свойств, конструкции оборудования и т.д. Были глубоко проанализированы существующие проблемы в данных аспектах и предложены соответствующие решения. Вместе с тем были детально разработаны потенциальные промышленные применения способа сверхзвукового лазерного напыления в различных областях. Рассмотрены также перспективы и проблемы, связанные с этой технологией, намечены направ-ления дальнейших исследований и инноваций в сверхзвуковом лазерном напылении, как зарождающейся комбиниро-ванной технологии аддитивного производства с высокой эффективностью, низкими затратами и высоким качеством.К л ю ч е в ы е с л о в а : сверхзвуковое лазерное напыление, материалы, параметры процесса, технические характе-ристики, применения сверхзвуковое лазерное напыление (SLD) -это новая разработанная технология в области лазерной обработки материалов, которую можно использо-вать для модификации поверхностей и покрытий ин-женерных конструкций для повышения их функци-ональности [1][2][3]. В этой технологии комбинируется подача сверхзвукового потока порошка в холодную струю (CS) с лазерным нагревом участка напыле-ния. при SLD лазерное излучение нагревает как рас-пыляемые частицы, так и подложку в пределах от 30 до 80 % их температуры плавления, тем самым зна-чительно снижая прочность частиц и подложки, и позволяя частицам пластически деформироваться и создавать покрытие при скорости ударения, состав-ляющей около половины скорости истечения CS.технология SLD находит все большее приме-нение для напыления покрытий благодаря своим технологическим и экономическим преимуще-ствам по сравнению с обычными способами на-пыления покрытий, таким как напыление в твер-дом состоянии плотных, однородных непористых покрытий на подложку: высокой скорости напы-ления со снижением эксплуатационных расходов без использования дорогостоящего процесса на-грева и инертных газов, меньшей чувствитель-ностью к характеристикам материалов исход-ного сырья, уплотнением трудно напыляемых порошков, значительным улучшением свойств материалов покрытий. что еще очен...

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Microstructure and tribological performance of tungsten carbide reinforced stainless steel composite coatings by supersonic laser deposition

Cited by 35 publications

References 29 publications

Study on Microstructure and Tribological Performance of Diamond/Cu Composite Coating via Supersonic Laser Deposition

Study on Microstructure and Tribological Performance of Diamond/Cu Composite Coating via Supersonic Laser Deposition

Research progress of supersonic laser deposition technology

Research progress of supersonic laser deposition technology

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