Influence of Graphite/Ni on Microstructure and Properties of Laser Clad Ni-Based Alloy Coatings

Chao, 马超 Ma; Cunshan, 王存山 Wang

doi:10.3788/cjl201340.0803003

Cited by 2 publications

(1 citation statement)

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“…Graphite is known for its good lubricating properties, but graphite was not found in the coating structure in in-situ synthesis experiments, as it easily oxidizes or reacts with other substances to form compounds. Ma and Wang [74] used a method of nickel encapsulating graphite to enhance the coating, which not only improved the hardness of the coating but also played a lubricating role, enhancing the coating's wear resistance from two aspects. Currently, white graphite (h-BN) or hexagonal boron nitride is commonly used in laser cladding.…”

Section: Graphite and Hexagonal Boron Nitride Self-lubricating 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: Graphite and Hexagonal Boron Nitride Self-lubricating 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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微热压制备石墨碳化硅陶瓷复合材料

Wu Haihua,

Liu Zhi,

Zhong Qiang

et al. 2023

激光与光电子学进展

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In this paper, based on the principle of microhot pressing additive manufacturing technology, rapid preparation of graphite silicon carbide ceramic composites is achieved, using natural flake graphite powder as the raw material and thermosetting phenolic resin as the adhesive. Particular focus is placed on the composition of mixed powder, and how this affects its compressive strength and thermal conductivity. The results show that when the natural flake graphite powder and the thermosetting phenolic resin is fixed at 85% and 15%, respectively, the mass fractions of high purity silica powder, short carbon fiber, and intermediate carbon microspheres is 25%, 4% and 21%, respectively. The compressive strength and thermal conductivity of the graphite silicon carbide ceramic composite is 30. 82 MPa and 21. 65 W/m•K, respectively. By testing the thermal expansion coefficient and oxidation resistance of the composite at 1200 ℃ , the oxidation weight loss and the thermal expansion coefficient is determined to be 23. 679% and 3. 14×10 − 6 /K, respectively. This composite material is expected to replace graphite casting and be applied in the casting industry.

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Influence of Graphite/Ni on Microstructure and Properties of Laser Clad Ni-Based Alloy Coatings

Cited by 2 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

微热压制备石墨碳化硅陶瓷复合材料

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