Results 111 to 120 of about 762,159 (346)

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Changes in the chemical structure and decay resistance of heat-treated narrow-leaved ash wood

open access: yesMaderas: Ciencia y Tecnología
We analyzed the effects of heat treatment on the chemical structure of wood from narrow-leafed Ash (Fraxinus angustifolia), a fast-growing and economically valuable species.
Mesut Yalcin, Halil Ibrahim Sahin
doaj  

Revisiting Stability Criteria in Ball‐Milled High‐Entropy Alloys: Do Hume–Rothery and Thermodynamic Rules Equally Apply?

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
The stability criteria affecting the formation of high‐entropy alloys, particularly focusing in supersaturated solid solutions produced by mechanical alloying, are analyzed. Criteria based on Hume–Rothery rules are distinguished from those derived from thermodynamic relations. The formers are generally applicable to mechanically alloyed samples.
Javier S. Blázquez   +5 more
wiley   +1 more source

INFLUENCE OF THERMAL TREATMENT OF THE BASALT TUFA ON ITS PHASE COMPOSITION AND SORPTION CAPACITY

open access: yesFood and Environment Safety, 2018
The results reflecting influence of thermal treatment of basalt tufa (BT) on its phase composition and capacity of some heavy metal ions (Cu2+, Mn2+, Ni2+, Pb2+, Zn2+) sorption under the static conditions are presented.
Volodymyr DIICHUK   +2 more
doaj  

Research on Gear Modification Considering Thermal Deformation

open access: yesJixie chuandong, 2023
When the gears work under high-speed and heavy-load conditions, the effects of friction and wear cannot be ignored. The gear modification can reduce gear wear and surface temperature, and has a significant effect on improving the anti-scuffing ability of gears. Thus, the heat distortion and modification of gears are studied. Based on the basic theories
Zhang Jinlong   +3 more
openaire   +1 more source

Mission Report: STS-4 Test Mission Simulates Operational Flight. President Terms Success Golden Spike in Space [PDF]

open access: yes
The fourth space shuttle flight is summarized. An onboard electrophoresis experiment is reviewed. Crew physiology, the first getaway special, a lightning survey, shuttle environment measurement, prelaunch weather conditions, loss of solid rocket boosters,

core   +1 more source

Material properties of nanoclay PVC composites [PDF]

open access: yes, 2009
Nanocomposites of poly(vinyl chloride) have been prepared using both hectorite- and bentonite-based organically-modified clays. The organic modification used is tallow-triethanol-ammonium ion.
Awad, Walid   +7 more
core   +1 more source

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