Influence of Organics Cladding Pretreatment on Microstructures and Properties of Austenitic Steel Coating via Laser Remanufacturing Technology

Chen, Yong; Hu, Liangbin; Qiu, Changjun

doi:10.1007/s11665-019-04078-z

Cited by 3 publications

(3 citation statements)

References 47 publications

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“…Figure . 8(c) displays the logarithmic amplitude frequency curve of the sample coating in 10 3 ~10 5 Hz region, which represented the response of the dielectric resistor in 3.5% NaCl solution. While at the low frequency (<10 3 Hz), the response of the passivation film to the capacitance behaviour was characterized.…”

Section: Corrosive Behaviormentioning

confidence: 99%

“…Thus, Stellite-6 alloy coatings were suitable for repairing and strengthening the surface properties of 42CrMo steel. Many studies mainly have focused on the change of process parameters [3], the addition of reinforcement phase [4], thermodynamic performance simulation [5] and so on by domestic and foreign scholars. However, the effect of overlap rate on corrosion resistance was rarely reported, and it is important for remanufacturing.…”

Section: Introductionmentioning

confidence: 99%

“…Figure 5. shows the electrochemical impendence spectroscopy (EIS) results of 20%, 50%, 60% overlap rate.…”

mentioning

confidence: 99%

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Corrosion Resistance Mechanism of Stellite-6 Coating on 42CrMo Substrate by Overlap Remelting

Gong,

Sun

et al. 2023

J. Phys.: Conf. Ser.

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To delay the corrosion rate of 42CrMo steel in oil and gas drilling industry, Co-based coatings were prepared on 42CrMo steel through laser cladding at different overlap rate (20%, 50% and 60%). The relationships between microstructure and corrosion behaviour of Stellite-6 coating in Cl ion corrosion medium were analysed by means of SEM, polarization curve and EIS. The results showed that the microstructures of Stellite-6 coating were mainly equiaxial crystal, and the corrosion form of cladding Stellite-6 alloy was pitting corrosion. The best corrosion resistance of Stellite-6 coating was the coating prepared at the overlap rate 50%. The formation of passivation films (Cr2O3 and Cr(OH)3) on the coating could obviously improve the corrosion resistance in Cl ion corrosion medium.

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Section: Corrosive Behaviormentioning

confidence: 99%