Published in Journal of Bio- and Tribo-Corrosion
In tribological industries, metal matrix composites are now being more commonly used because of their inherent properties such as high stiffness, high strength, high toughness. The effect on tribological properties of chromium-reinforced bronze-based metal matrix composites was investigated. In a bronze matrix, chromium metal powders of 40 μm parti...
Refractory transition-metal (TM) diborides have high melting points, excellent hardness, and good chemical stability. However, these properties are not sufficient for applications involving extreme environments that require high mechanical strength as well as oxidation and corrosion resistance. Here, we study the effect of Cr addition on the proper...
A realistic wear test was developed for porous thermal insulation systems exposed to high temperature turbulent gas flow, because it is essential for the development of existing and new concepts of such insulation and therefore also for the performance of processes that depend on such insulation. Wear is crucial and often dominant for the long-term...
Published in Journal of Bio- and Tribo-Corrosion
In the present research, the effect of 44-μm-sized B4C addition on the mechanical and wear performance of Al2024 alloy has been studied. The Al2024 alloy metal matrix composites reinforced with varying wt% (2, 4, 6 and 8) of B4C particulates were fabricated by stir cast route. The synthesized composites were subjected to microstructural studies, me...
Published in Tribology Letters
This paper examines the effect of dispersant and anti-wear additives on fretting wear in lubricated bearing steel contacts. Reciprocating sliding ball-on-flat fretting tests with a stroke length of 50 μm have been carried out on steel-to-steel contacts in both dry and lubricated conditions. Wear and friction coefficient have been measured, and surf...
Published in Dental materials : official publication of the Academy of Dental Materials
To investigate the wear resistance of polymers for injection molding, subtractive and additive manufacturing of occlusal devices in comparison with enamel antagonist wear and material properties (i.e., hardness, flexural strength, and flexural modulus). Injection molding was compared with milling and the additive technologies stereolithography, low...
Published in Clinical oral investigations
To present a digital approach to measure and compare material wear behavior of antagonistic first molar restorations made of an experimental CAD/CAM composite (COMP) and lithium disilicate ceramic (LS2) in patients with reconstructed vertical dimension of occlusion (VDO) after generalized hard tissue loss. A total of 12 patients underwent complete ...
Published in Journal of Bio- and Tribo-Corrosion
In view of the ecological problems associated with the pollution caused by vehicles and the degradation of the ecosystem due to the extensive use of synthetic oil. There is a need to find the fuel that can substitute mineral oil and, in addition, the fuel should be environmentally friendly. Balanites aegyptiaca (Desert date) oil has the potential t...
Published in Tribology Letters
AbstractThe effect of 30% H2O2 solutions with different pH (2, 4 and 6) on the wear of human dental enamel was studied. Additionally, the whitening efficiency and changes in hardness and morphology were evaluated. The enamel tribological response was accessed through two different approaches: ball-on-plate and atomic force microscopy (AFM), the lat...
Published in Tribology Letters
AbstractThe addition of 0.2–5% nanoscale (40–80 nm) α-phase or microscale (40 μm) γ-phase Al2O3 particles in PTFE effectively reduce the matrix wear rate by 99.99%, whereas microscale (> 0.5 μm) α-Al2O3 or nanoscale (40–80 nm) γ-Al2O3 only reduce PTFE wear by ~ 90% under identical loading, dispersion and testing conditions. This paradoxical materia...
