... ( a ) and ( b ) Wear debris exhibiting a multilayered structure (a) and (b) Wear debris exhibiting a multilayered structure Fig. 7 Microhardness variation along building direction: ( a ) graphical representation of hardness variation along the build direction and ( b )–( d ) optical microstructure...

... angle on a two-dimensional surface. Cr target was used to test the residual stress. The hardness of the LAM Hastelloy C22 was measured using a Vickers hardness tester (HDV-1000) with a load of 200 gf and a dwelling time of 15 s, and was measured three times to obtain the average value. A cupping machine...

.... The microstructures were studied using a optical microscope (OM), electron backscatter diffraction (EBSD), and scanning electron microscope (SEM). Hardness is measured using Vickers’s microhardness tester. The impact of WS 2 on the friction and wear resistance of Mg-AZ91 were evaluated using a pin-on-disc apparatus...

... characteristics. The results revealed a better wear resistance and friction coefficient for recycled nanocomposites than pure magnesium. The enhanced wear resistance of recycled nanocomposites is attributed to the increased hardness and strength due to the Fe 3 O 4 nanoparticles and the turning induced...

... a uniaxial hydraulic press under 800 MPa pressure, and thus, green compacts in Ø12 × 6 mm dimensions were produced. The green compacts produced were sintered at 1300 °C in a vacuum environment of 10 −6 mbar for 2 h. Sintered composites were characterized by hardness and density measurements...

... conditions). Microstructural analysis revealed uniform distribution of ceramic particles in the matrix. Significant reduction in grain size and change in morphology was obtained for LB composites whereas strong interfacial bonding was obtained for LI composites. Higher hardness, lower wear-rate, and higher...

... the hardness and wear resistance, whereas the humidity-sensitive alumina phase reduced friction at higher humidity levels. Next, CuO (5 wt%) was added to the Al 2 O 3 -B 2 O 3 composites to form Al 2 O 3 -B 2 O 3 -CuO composites. These composites showed an increase in the percentage relative density by 16–37...

... key area being space tribology. Bulk metallic glasses (BMGs) are a class of alloy characterized by their amorphous structure, which results in a material with extremely high strength, corrosion resistance, high hardness, and high elastic limit. BMGs have demonstrated improved wear resistance when...

... nanocomposites. After 1 h of mechanical milling of A356 and nano-Al 2 O 3 powders, green compacts were obtained by cold pressing. Green compacts were sintered at 550 °C in a vacuum environment (10 −6 mbar) for 1 h. Samples were characterized by density, hardness measurements, scanning electron microscopy...

...) and energy-dispersive spectrometer (EDS). The results show that the introduction of nitrogen improves the hardness and wear resistance of Zr-based metallic glass. Compared with the non-N-doped Zr-based metallic glass, the N-doped Zr-based metallic glasses have higher hardness and lower wear-rate...

... density of dislocations and short bar-shaped cementite. The bainite exhibited higher hardness and elasticity but lower plasticity than the matrix microstructure. The incongruity of plastic deformation between upper bainite and matrix microstructures will lead to stress concentration at boundary...

... 28 10 2021 02 12 2021 PACVD process a-C:H:SiO x coating tribological performance counter body adhesion coatings dry friction hardness tribological systems wear This work and previous studies differ by a consideration of a wider range of counter body materials, normal load...

... installation position under continuous field operation conditions. The hardness, phase structure, elemental composition, and micromorphology of the spindle hook teeth were characterized using microhardness, X-ray diffractometer (XRD), energy spectrum analyzer (EDS), and scanning electron microscope (SEM) after...

... of the material. The only evolution of mechanical behavior is due to the combined thermomechanical solicitation, which increases the hardness of the friction material. From the strain field analysis, the evolution took place on the strain localizations, which strongly depend on the distribution of graphite...

... not lead to the formation of new compounds. However, it significantly improves the shore hardness and tribological properties of EPDM. In addition, significant stick-slip phenomenon occurs during the wear process of EPDM with different carbon black content. During the wear process of EPDM, there are both...

.... AISI 4140 steel was coated with NiP through an autocatalytic bath with the addition of Al 2 O 3 particles maintained in suspension by mechanical stirring. Following, the coated samples were annealed at 600 °C to increase the hardness and to create an interdiffusion layer, which improves coating...

... of Ti exceeds 0.5, Laves phases appeared in the coatings. With increasing of Ti, the micro-hardness and wear resistance of the coatings increased, but friction coefficient and crack resistance of the coatings reduced. Suitable Ti content in the FeCoNiCrMnTi x , laser composite coating, had higher...

...-on-disc, reciprocal sliding, and micro-abrasion wear tests are quite common configurations for this purpose. Thus, a gap was identified in terms of characterization of hard physical vapor deposition (PVD) coatings subject to higher levels of contact pressure. This study aims to study and compare the wear...

... 03 2021 18 05 2021 18 05 2021 07 06 2021 non-ferrous metals (Zn–40Al–2Cu–2Si alloy) bearing materials wear behavior sliding friction bearings hardness wear mechanisms The first Zn-based commercial alloys produced in the late 1920s are called ZAMAK 2, 3, 5, and 7...

... density of 1.41 Mg/m 3 (standard deviation of 0.001 Mg/m 3 ). The initial characteristics of the cultivator sweeps are listed in Table 3 . The mean Bilk Hardness (HRC) values of the standard cultivator sweep and at the CADEN Edge section of the hardened sweep were 31 (Std. 3.72, n = 8) and 37 (Std...