<i>In situ</i> synthesis of WC ceramic particle reinforced composite coating by GTAW

Xiao, Yongguang; Du, Hao; Li, X. F.; Xu, Yan; Wu, Liang; He, Yongyong

doi:10.1179/1432891715z.0000000002000

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…Though the hardness increased on increasing the pre-placed layer’s thickness, welding defects simultaneously reduced the strength. Multi-particle in situ production of the ceramic cladding layer gave the highest hardness (around 1578 HV 0.2 for [ 61 ]) and maximum wear performance while simultaneously reducing hardness gradient distribution. The overlapping passes also degraded the hardness and wear resistance properties compared to single-pass regions [ 25 ].…”

Section: Resultsmentioning

confidence: 99%

Performance Comparison of Advanced Ceramic Cladding Approaches via Solid-State and Traditional Welding Processes: A Review

et al. 2020

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Ceramic coating has applications in enhancing the material’s properties and can significantly improve the material’s usability in varied temperatures and adverse operating conditions and widen its applicability scope. It can add to the various properties such as wear resistance, high-temperature degradation, thermal conductivity, material toughness, tensile strength, corrosion resistance, friction reduction, electric insulation, and the lifespan of the material. Various techniques have been suggested and implemented to achieve ceramic coating on a metal surface, each having their respective advantages and disadvantages. Hence, they can be distinguished for their applicability in different places. The bonding mechanism of metal particle systems has been researched to date, but there are still certain uncertainties regarding the ceramic particle system because of the dissimilarities in properties. The paper aims to profoundly investigate the various coating technologies available through welding processes and do a comparative study through numerical analysis and experimental results on the properties of coatings obtained from two broad categories of welding—solid-state and traditional/fusion processes. It was found that the solid-state processes in which the temperature remained well below the fusion temperatures overcame the mismatch in property and produced reliable coatings with enhanced mechanical properties.

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Section: Resultsmentioning

confidence: 99%

Performance Comparison of Advanced Ceramic Cladding Approaches via Solid-State and Traditional Welding Processes: A Review

et al. 2020

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“…The previous studies have reported the impact of the in situ particles and alloying elements on the properties [23]. Xiao et al [24] have reported that WC ceramic particles were in situ synthesised on the surface of Q235 steel by GTAW processing using mixtures of W, C, Ni, B-Fe and a small amount of Si iron. In addition, it has shown the composite powders which were composed of a mixture of pure tungsten powder and carbon powder on a steel plate.…”

Section: Introductionmentioning

confidence: 99%

In situ synthesised WC-reinforced Co-based alloy layer by vacuum cladding

Tao

Zhang

et al. 2018

Surface Engineering

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Co-based alloy cladding layers (wallex50 and wallex55) were synthesised on 316L stainless steel by vacuum cladding. Experimental results showed that wallex50 composed of γ-Co, WC, Co 6 W 6 C, Cr 7 C 3 , in which in situ reinforcement WC phases were homogeneously distributed in the layer, having a clear and stable interface structure. Wallex55 with externally added WC particles was composed of γ-Co, WC, Co 6 W 6 C, Cr 7 C 3 , CrB, CoWB. The average microhardness of wallex50 and wallex55 was 794 ± 29 and 939 ± 24 HV, respectively. Nevertheless, wallex50 showed a better resistance to friction and wear than wallex55, which was not in a cross line with Archard's law. Relative wear resistance of wallex50 was 23.36, which was 1.56 times greater than that of wallex55. The improvement of friction and wear for wallex50 could be due to the fact that the in situ synthesised WC particles increased the friction and wear resistance by the pinning effect of the retained reinforced phase on the Co-based matrix.

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