The preparation and lubrication properties of a CrN/Cr multilayer using the double glow plasma surface alloying technique

Cui, Shiyu; Yi, Zhou; Huang, Jun; Chen, Dong; Luo, Junming; Ouyang, Jun; Tao, Xinyong

doi:10.1016/j.apsusc.2022.154686

Cited by 2 publications

(1 citation statement)

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“…The active atomic clusters are adsorbed onto the low-energy defects of the matrix and rapidly nucleate, accompanied by continuous adsorption of active atomic groups onto the surface of the matrix. The initial crystal nucleus grows and forms a convex structure by the continuous accumulation of active atomic clusters [17,18]. Figure 2a-c shows the surface morphology of BTi-62421S Ti alloy specimens with Ar/N 2 flow ratios of 1:1, 1:2, and 1:3, respectively.…”

Section: Surface Microstructure and Phase Compositionmentioning

confidence: 99%

Double-Glow Plasma Surface Alloying of BTi-62421S Alloys: Regulation of Microstructure Properties

et al. 2023

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In order to meet the design requirements of lightweight artillery and adopt the method of double-glow plasma nitriding to solve the problem of low hardness and poor abrasion resistance of Ti alloy, the BTi-62421S high-performance titanium (Ti) alloy was selected as the experimental material to replace gun steel. To study the effect of different nitrogen (N) concentrations on the heat resistance scouring performance of BTi-62421S high-performance Ti alloy and investigate the influence of alloying elements on the heat resistance scouring performance under the same parameters compared with the commonly used TC4 Ti alloy, argon was used as the protective gas by continuously increasing the N concentration (Ar/N2 = 1:1, 1:2, 1:3). It was found that the honeycomb structure on the surface of the sample and the thickness of the coating increased continuously, reaching a thickness of 15 μm, while the depth of the nitride particles extending from the coating to the substrate also increased, reaching a maximum depth of 26 μm. The orientation of TiN changed from 37° to 62°. The hardness of the coating showed a negative correlation with the coefficient of frictional abrasion, which significantly improved the heat-resistant scouring performance of BTi-62421S high-performance Ti alloy.

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Section: Surface Microstructure and Phase Compositionmentioning

confidence: 99%