... is performed to target the effects of surface roughness and the rotation of transported particles. The two-phase flow is modeled using the Euler-Lagrange approach. The near-wall turbulence model, K-ω, governs the stochastic flow. The number of particles injected in terms of “number of tries” plays...

... the growth of the passivation film and the mechanical removal of such film were the driving factors for the tribocorrosion process. Furthermore, when the steel was coated with the tungsten oxynitride film, we found that the surface presented a better resistance to wear, corrosion, and tribocorrosion...

... channel overlapping information fusion deep learning ferrographic image fault diagnosis lubricant degradation surface fatigue and fretting surface fracture cracking surfaces Ferrographic imaging, also known as ferrographic imaging, uses a gradient-changing magnetic field to separate...

... distances perpendicular to the height direction of the profile between adjacent asperities on anisotropic contact surfaces is investigated for the first time, and it is found that the distribution of the horizontal distances is very close to the normal distribution, but the values are different in different...

... the morphologies and cross sections of wear scar corresponding to different oil samples. For the worn surface lubricated by the oil sample containing MSH, obvious grooves can be found in the sliding direction, which indicates that wear is serious. Compared with MSH, the smoother worn surface corresponding to MSHH...

... materials with different ratios were obtained by the above method, and they were used as the material of the pins. In order to reduce the effect of the initial surface roughness on the test results, 800, 1000, and 2000 mesh sandpaper were used to polish the pin samples with an initial roughness of 0.8 ± 0.2...

... to the adhesion and abrasion mechanism generated between the contact surfaces. In this work, the ball-on-flat experiments were performed on stainless steel-420 versus 100cr6 friction pairs under dry, minimum quantity lubrication (MQL) and pool conditions. Then, the wear studies in terms of volume loss, profile...

... to the metastability of ASS during plastic deformation. At severe stresses, plastic deformation of sliding surfaces is more prevalent. Ferrite (%) concentration decreases with the increasing load due to increased plastic deformation, which converts austenite to martensite. As deformation wear debris rolls, it hardens...

... particles break away three-body abrasive wear is produced. As shown in Table 1 , Sample D and Sample E have the same electrical plating process, but Sample E has a thicker Cu coating than Sample D, which is why Sample E has a rougher surface profile. This roughening was also found by Lin and Lin [ 11...

...Shijun Wang; Lingsong Fan; Jingwei Wu; Pengyang Li A side contact model of joint is proposed, which considers the horizontal distance distribution and side contact between the asperities on the contact surfaces. The Leica DCM3D microscope is applied to collect the profile data of the grinding...

... that the track profile forms a perfectly smooth revolved semi-circular segment, as illustrated in Fig. 2( e ) . However, as apparent in Figs. 6 and 7 , wear tracks produced during BOD wear testing performed in this work exhibited nonuniform track widths and rough track surfaces due to extensive adhesive...

...Luanxia Chen; Zhanqiang Liu; Yukui Cai; Bing Wang The cylinder block/valve plate interface in the axial piston pump has been proven to be easily worn out, which will increase power loss and reduce its efficiency. The valve plate surface is required to be manufactured with low viscous friction...

... that the nanolubricant produced a tribofilm reduced the friction for 40% and wear 90%, while the electrical conductivity remained to be stable during tribotesting. Surface characterization of the tribofilm showed that there was a layered pyrophosphate on the wear track. The in situ impedance study about tribochemical...

...Siyu Wang; Rupeng Zhu Based on “slice method,” the improved time-varying mesh stiffness (TVMS) calculation model of helical gear pair with tooth surface wear is proposed, in which the effect of friction force that obtained under mixed elastohydrodynamic lubrication (EHL) is considered in the model...

... velocity, normal force, and humidity. The pattern is a square lattice of square cavities with sub-mm spacing. We find that dynamic friction decreases compared to nonpatterned surfaces, since stress concentrations lead to early detachment, and that stick-slip behavior is also affected. Friction increases...

... friction sliding surfaces wear fretting This study is directly related to components used in high-temperature gas cooled reactors (HTGRs) (800 °C) and very high-temperature gas cooled nuclear reactors (850 °C and above) (VHTRs). In particular, valve stems and seats, control rod drive mechanisms...

... principle, the influences of the surface wear of guideway on its straightness attenuation were explored and an analytical prediction model for the geometric accuracy attenuation of slide guide was established. The reciprocating wear test of slide guide samples was performed with a test bench to explore...

...F. J. G. Silva; R. C. B. Casais; A. P. M. Baptista; M. J. Marques; V. M. C. Sousa; R. Alexandre There are several ways to characterize the wear resistance of coatings in the laboratory, almost all of them applying relatively low contact pressure, both punctually and over surface contact. Pin...

...Vimal Edachery; V. Swamybabu; Anand Gurupatham; Manikandan Paramasamy; Satish V. Kailas Surface topography is a critical parameter that can influence friction and wear in engineering applications. In this study, the influence of surface topography directionality on seizure and scuffing initiation...

... and the characteristics between the reticle and the chuck are studied in this article. First, based on the Kogut–Etsion contact model and the Majumdar–Bhushan (MB) fractal contact model, the maximum static friction coefficient model between nano-scale surfaces was established. Then, the surface morphology parameters...