Results 111 to 120 of about 140,919 (361)
Pengaruh Perendaman Minuman Isotonik Terhadap Kekerasan Permukaan Email Gigi
Cakradonya Dental JournalDemineralization is the process of losing minerals in tooth enamel when the enamel is in a pH environment below 5.5. Email is the outer layer of the crown anatomy, including the hardest part of the body could dissolved when consume isotonic drinks are ...
Sari Dewiyani +2 more
doaj +1 more source
The Effect of Dissolved Water on the Tribological Properties of Polyalkylene Glycol and Polyolester Oils [PDF]
, 1994 The effect of water dissolved in polyalkylene glycol and polyolester oils on the tribological behavior of two material contact pairs in three test environments is evaluated.
Cusano, C. +2 more
core
Material‐Gradient Enabled Enhancement of Strength and Strain‐Hardening of Lattice Structures
Advanced Science, EarlyView.This study employs material gradients in lattice structures via alloy‐controlled additive manufacturing, decoupling mechanical behavior from geometry. Gradients guide stable plastic fronts, enhancing plateau stress and energy absorption by up to 25.4%.
Junhao Ding +5 more
wiley +1 more source
TecnoLógicas, 2017 Ceramic materials hardness is usually determined by Vickers microindentation, which requires rigorous sample preparation and highly demanding analysis of traces turning this method difficult to use in industrial applications.
Daniel Zuluaga-Castrillón +4 more
doaj
Effects of environment on microhardness of magnesium oxide [PDF]
Micro-Vickers hardness measurements of magnesium oxide single crystals were conducted in various environments. These environments included air, nitrogen gas, water, mineral oil with or without various additives, and aqueous solutions with various pH ...
Buckley, D. H., Ishigaki, H.
core +1 more source
Preparation-microstructure-property relationships in double-walled carbon nanotubes/alumina composites [PDF]
, 2013 Double-walled carbon nanotube/alumina composite powders with low carbon contents (2– 3 wt.%) are prepared using three different methods and densified by spark plasma sintering.
Estournès, Claude +4 more
core +3 more sources
Advanced Science, EarlyView.Combining microstructural engineering with Cu3SbSe3 alloying significantly improves the performance of Bi2Te3‑based thermoelectric materials, yielding a high zT of ≈1.45 (average zT ≈1.3 over 303–503 K), excellent mechanical robustness (Vickers hardness of 96 Hv and compressive strength of 187 MPa), and an impressive conversion efficiency of ≈6.9% at a
Ruiheng Li +11 more
wiley +1 more source
Mechanical Properties of Ni-Cr-Al Alloy Cold Drawn Bar [PDF]
TeshugangIn this paper， the preparation of Ni-Cr-Al alloy by the smelting process of 200 kg vacuum induction + vacuum arc remelting（VIM+VAR） was analyzed by means of tensile test at room temperature， optical microscope and hardness test （/%：0.01C， 0.10-0.20Si， 0 ...
Liu Junkai, Yu Yipeng, Shen Yaqiu, Wang Jing, Luo Xi, Zhang Jiansheng
doaj +3 more sources
Journal of Dental Sciences, 2012 Background/purpose: Acrylic dentures frequently fracture during service due to their poor strength characteristics. The aim of this study was to evaluate the effects of adding 0.5–5 wt% aluminum oxide (Al2O3) powder on the flexural strength, surface ...
Mahroo Vojdani +2 more
doaj +1 more source
Effect of reinforcing submicron SiC particles on the wear of electrolytic NiP coatings Part 2: Bi-directional sliding [PDF]
, 2006 As-plated and heat-treated electrodeposited NiP and composite NiP-SiC coatings were investigated in bi-directional ball-on-disc sliding tests. All tests were performed under gross slip conditions.
Aslanyan, I. R. +2 more
core +1 more source