Insights into the microstructure characteristics, mechanical properties and tribological behaviour of gas-phase chromized coating on GCr15 bearing steel

Tan, Cuicui; Zong, Ximei; Zhou, Wei; Cao, Huatang; Wang, Junjun; Wang, Chuanbin; Peng, Jian; Li, Yangzhong; Li, Hongyi; Wang, Jinshu; Chen, Shuqun

doi:10.1016/j.surfcoat.2022.128605

Cited by 9 publications

(4 citation statements)

References 49 publications

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“…Fang et al [ 8 ] thermally sprayed a Ni60A coating on the surface of GCr15 steel and carried out an induction remelting treatment; the hardness of the coating was as high as 818 HV. Tian et al [ 9 ] used vapor phase chromizing technology to obtain a chromizing layer on the surface of GCr15 steel, and the hardness of the chromizing layer reached 1600 HV. Xie et al [ 10 ] coated titanium on the surface of a Φ 8 mm GCr15 steel ball and performed ball milling treatment to obtain a titanium-hardened layer with a hardness of 895 HV on the surface of the steel ball.…”

Section: Introductionmentioning

confidence: 99%

“…Fang et al [8] thermally sprayed a Ni60A coating on the surface of GCr15 steel and carried out an induction remelting treatment; the hardness of the coating was as high as 818 HV. Tian et al [9] used vapor phase chromizing technology to obtain a chromizing layer on the surface of GCr15 steel, and the hardness of A performance comparison study was conducted on the wear and corrosion resistance of the GCr15 steel substrate, Ni-P coating, and Ni-P-nanoPTFE composite coating.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of a Ni-P-nanoPTFE Composite Coating on the Surface of GCr15 Steel for Spinning Rings via a Defoamer and Transition Layer and Its Wear and Corrosion Resistance

Shunqi

Zhou

et al. 2023

Materials

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In this study, a method of preparing a Ni-P-nanoPTFE composite coating on the surface of GCr15 steel for spinning rings is proposed. The method incorporates a defoamer into the plating solution to inhibit the agglomeration of nano-PTFE particles and pre-deposits a Ni-P transition layer to reduce the possibility of leakage coating. Meanwhile, the effect of varying the PTFE emulsion content in the bath on the micromorphology, hardness, deposition rate, crystal structure, and PTFE content of the composite coatings was investigated. The wear and corrosion resistances of the GCr15 substrate, Ni-P coating, and Ni-P-nanoPTFE composite coating are compared. The results show that the composite coating prepared at a PTFE emulsion concentration of 8 mL/L has the highest concentration of PTFE particles (up to 2.16 wt%). Additionally, its wear resistance and corrosion resistance are improved compared with Ni-P coating. The friction and wear study shows that the nano-PTFE particles with low dynamic friction coefficient are mixed in the grinding chip, which gives the composite coating self-lubricating characteristics, and the friction coefficient decreases to 0.3 compared with 0.4 of Ni-P coating. The corrosion study shows that the corrosion potential of the composite coating has increased by 7.6% compared with that of the Ni-P coating, which shifts from −456 mV to a more positive value of −421 mV. The corrosion current reduces from 6.71 μA to 1.54 μA, which is a 77% reduction. Meanwhile, the impedance increased from 5504 Ω·cm2 to 36,440 Ω·cm2, which is an increase of 562%.

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Section: Introductionmentioning

confidence: 99%

“…Fang et al [8] thermally sprayed a Ni60A coating on the surface of GCr15 steel and carried out an induction remelting treatment; the hardness of the coating was as high as 818 HV. Tian et al [9] used vapor phase chromizing technology to obtain a chromizing layer on the surface of GCr15 steel, and the hardness of A performance comparison study was conducted on the wear and corrosion resistance of the GCr15 steel substrate, Ni-P coating, and Ni-P-nanoPTFE composite coating.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a Ni-P-nanoPTFE Composite Coating on the Surface of GCr15 Steel for Spinning Rings via a Defoamer and Transition Layer and Its Wear and Corrosion Resistance

Shunqi

Zhou

et al. 2023

Materials

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“…Su et al investigated the wear behavior of chromed HT250 and suggested that the chromed sample revealed better wear resistance with a lower friction coefficient of 0.2, which was attributed to the high hardness (over 1900 HV) resulting from strengthening with chromium carbides [20]. Similar enhanced wear resistance was also observed in chromed GCr15 bearing steel [21]. Therefore, a large number of studies have proved that thermal-diffusion chromizing technology can significantly enhance hardness to increase wear resistance [22][23][24].…”

Section: Introductionmentioning

confidence: 91%

Increase in Wear Resistance of Traction Wheel via Chromizing: A Study Combining Experiments and Simulations

Yang²,

Wan³

et al. 2022

Coatings

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The wear failure of traction wheels in orchard transport severely restricts the stability of orchard conveyors and impedes the mechanization of orchard work. In this study, the thermal-diffusion chromizing method was employed to increase the hardness of a traction wheel for the enhancement of wear resistance. The results show that a uniform and dense chrome coating with a thickness of 16 μm was formed on the surface. The coating was revealed to have a hardness of 1752.7 HV and benefited from the formation of Cr-C compounds. A friction test and a wear simulation test under both dry-friction and lubrication conditions were conducted to assess the enhanced wear resistance based on the friction coefficient and wear loss. The friction coefficient of QT400 and that of the chrome coating were 0.37 and 0.36, respectively, under dry conditions. Additionally, the friction coefficient of QT400 decreased to 0.12, while that of the chrome coating remained at 0.35, under lubrication conditions. In the wear simulation test, the wear loss of the chromed traction wheel was about 1/28 of that of the QT400 traction wheel under dry-friction conditions. In addition, the wear loss of the chromed traction wheel was about 1/24 of that of the QT400 traction wheel under lubrication conditions. Moreover, the wear mechanism was analyzed with a microstructure study and finite element analysis (FEA). The synergetic effect between fatigue wear and abrasive wear was likely responsible for the wear failure of the traction wheel. The method proposed in this study may be a promising way to enhance the wear resistance of QT400 traction wheels through the application of a chrome coating without sacrificing the loading capacity, and this work contributes to the understanding of the wear failure mechanism of traction wheels.

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“…Chromized steels with higher carbon content showed a higher hardness but a lower scratch resistance, which was attributed to increased delamination and cracking of the chromized layer [17]. Tribological characterization in a ball-on-flat non-lubricated configuration of chromized GB GCr15 steel (equivalent to AISI 52100 steel) showed a formation of chromium oxide tribolayer that increased the wear resistance and lowered the friction coefficient at increased contact pressures [34].…”

Section: Introductionmentioning

confidence: 99%

Improving mechanical properties of carbon and tool steels via chromizing

Grejtak,

2023

Advances in Applied Ceramics: Structural, Functional and Biocer

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Steels are commonly used in high-performance demanding applications due to their favourable mechanical properties. Various surface engineering techniques have been developed for steels, among which chromizing is an affordable high-throughput casehardenig process for improved surface hardness and wear resistance while retaining the substrate ductility and toughness. In this work, tribological testing along with nano-and micro-indentation and morphological and composional characterisation were used to understand the effects of the chromizing process on the AISI 1095 carbon steel, 52100 bearing steel and A2, D2 and M2 tool steels. The results of this study demonstrate that the chromizing treatment of low-cost 1095 and 52100 steels significantly improves their wear and hardness properties to a level comparable to the more costly tool steels. While chromizing also increased the hardness of the tool steels, it had little improvement on the wear resistance for the D2 and M2 tool steels.

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Insights into the microstructure characteristics, mechanical properties and tribological behaviour of gas-phase chromized coating on GCr15 bearing steel

Cited by 9 publications

References 49 publications

Preparation of a Ni-P-nanoPTFE Composite Coating on the Surface of GCr15 Steel for Spinning Rings via a Defoamer and Transition Layer and Its Wear and Corrosion Resistance

Preparation of a Ni-P-nanoPTFE Composite Coating on the Surface of GCr15 Steel for Spinning Rings via a Defoamer and Transition Layer and Its Wear and Corrosion Resistance

Increase in Wear Resistance of Traction Wheel via Chromizing: A Study Combining Experiments and Simulations

Improving mechanical properties of carbon and tool steels via chromizing

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