Results 21 to 30 of about 7,176,130 (391)
Two-body wear and surface hardness of occlusal splint materials.
Dental materials journal, 2022 The aim of this in vitro study was to evaluate the wear and surface hardness of nine materials for conventional manufacturing, subtractive milling, and 3D printing of occlusal splints, as well as to evaluate the differences in wear and surface hardness ...
M. Gibreel +4 more
semanticscholar +1 more source
Effects of Adding TiO2 Nanoparticles on Flexural Strength and Hardness of Two New Commercial Flowable Dental Composites [PDF]
Journal of Dental Materials and Techniques, 2022 Introduction The present study aimed to investigate the effect of adding TiO2 nanoparticles on the flexural strength and hardness of two dental composites.
Fatemeh Koohpeima +2 more
doaj +1 more source
Splitting (complicated) surfaces is hard [PDF]
Computational Geometry, 2006 AbstractLet M be an orientable combinatorial surface. A cycle on M is splitting if it has no self-intersections and it partitions M into two components, neither of which is homeomorphic to a disk. In other words, splitting cycles are simple, separating, and non-contractible.
Éric Colin de Verdière +4 more
openaire +3 more sources
Applied Sciences, 2022 This study aims to clarify the relationship between surface hardness and the peak interfacial frictional coefficient under different particle sizes. The relationship between particle size and the peak interfacial frictional coefficient with different ...
Xianqiang Zhao +2 more
doaj +1 more source
Hard spheres on the gyroid surface [PDF]
Interface Focus, 2012 We find that 48/64 hard spheres per unit cell on the gyroid minimal surface are entropically self-organized. Striking evidence is obtained in terms of the acceptance ratio of Monte Carlo moves and order parameters. The regular tessellations of the spheres can be viewed as hyperbolic tilings on the Poincaré disc with a negative Gaussian ...
Masakiyo Kimoto +2 more
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Study the surface hardness for (UPE/SiO2) composites [PDF]
مجلة جامعة الانبار للعلوم الصرفة, 2018 In this work the effect of adding SiO2 powder on the hardness property for UPE was studied. Three groups of samples were prepared (UPE/(SiO2-Micro)), (UPE/(Nano-SiO2) and (UPE/(Micro+Nano)SiO2) with weight fraction of additives (%2، %4، %6، %8).
Areej Hatam Fareed, Faik Hammad Anter
doaj +1 more source
Experimental study on grinding surface quality of DD9 nickel-based single crystal super-alloy
Hangkong gongcheng jinzhan, 2023 Turbine blade root are commonly processed by grinding, and the grinding process parameters determine the surface quality and fatigue performance.The effect and mechanism of grinding parameters are investigated on the surface roughness and hardness of ...
JIN Qichao +3 more
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A model for coated surface hardness [PDF]
Surface and Coatings Technology, 2000 Abstract The authors present a model that predicts the hardness of a film deposited on the surface of a substrate. The model is based on a simple mathematical relationship involving the hardness of the film and the hardness of the substrate, together with the hardness of the composite film/substrate at a given film thickness/penetration depth ratio ...
Fernandes, J. V. +3 more
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The effect of laser surface hardening on the surface hardness of mild steel
IOP Conference Series: Materials Science and Engineering, 2020 Laser surface hardening (LSH) has become the most vital process in order to increase the hardness of a mild steel surface, especially to overcome the wear issues in machining parts, where mild steel was hugely applied.
M. Salleh +4 more
semanticscholar +1 more source
Synthesizing Ti–Ni Alloy Composite Coating on Ti–6Al–4V Surface from Laser Surface Modification
Metals, 2023 In this work, a Ni-alloy Deloro-22 was laser-deposited on a Ti–6Al–4V bar substrate with multiple sets of laser processing parameters. The purpose was to apply laser surface modification to synthesize different combinations of ductile TiNi and hard Ti2Ni
Yitao Chen +2 more
doaj +1 more source