Results 81 to 90 of about 663,725 (292)
Ultracold atoms at unitarity within quantum Monte Carlo
, 2009 Variational and diffusion quantum Monte Carlo (VMC and DMC) calculations of the properties of the zero-temperature fermionic gas at unitarity are reported.
Morris, Andrew J. +2 more
core +1 more source
Advanced Engineering Materials, EarlyView.Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller +6 more
wiley +1 more source
Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V
Advanced Engineering Materials, EarlyView.This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann +3 more
wiley +1 more source
Journal of Thermal Insulation, 1991 The technology for manufacturing high thermal performance cellular plastic insulations such as polyurethane, polyisocyanurate, phenolics and extruded polystyrene uses gases with low thermal conductivity as captive blowing agents. The gas is captured in the closed cells of the material to achieve higher thermal resistance.
Mitalas, G. P., Kumaran, M. K.
openaire +3 more sources
, 2012 We describe a numerical algorithm to integrate the equations of radiation magnetohydrodynamics in multidimensions using Godunov methods. This algorithm solves the radiation moment equations in the mixed frame, without invoking any diffusion-like ...
Agol +32 more
core +1 more source
Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere
Advanced Engineering Materials, EarlyView.A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz +4 more
wiley +1 more source
Comparison between off gas method and sodium sulfite method in diffuser performance measurement
Japan journal of water pollution research, 1988 非定常下の標準的散気性能測定法である「亜硫酸ソーダ法」の測定過程で,「ガス収支法」の手法を適用することによって,通気排ガス中の酸素濃度変化を測定することができる。亜硫酸ソーダ法測定の初期段階では,液中の溶存酸素濃度が急速に零に達するのに対して,排ガス中の酸素濃度はゆっくり減少して最低値に達する。総括酸素移動容量係数KLa,または溶存酸素濃度C=0における酸素溶解効率η0を,この最低酸素濃度zmから導くことができるのである。磁器製散気板の散気性能測定実験を行い,実験結果から得られた同一条件下のガス収支および亜硫酸ソーダ両法の値を比較し,統計学的検定の結果両者が一致することがわかった。実操業下の性能測定法としては現実的にはガス収支法しかないので ...
Tadao KASAKURA, Asao MIZUNO
openaire +2 more sources
Advanced Engineering Materials, EarlyView.Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios +5 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein +2 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm +3 more
wiley +1 more source