Results 51 to 60 of about 4,222,493 (262)

Analysis of the rheological property and crystallization behavior of polylactic acid (Ingeo™ Biopolymer 4032D) at different process temperatures

open access: yese-Polymers, 2021
The aim of this study was to determine the rheological property and crystallization behavior of polylactic acid (PLA) with improved heat resistance (Ingeo™ Biopolymer 4032D) through investigation of the melt viscosity and crystallization kinetics of PLA ...
Yoo Hyeong Min   +2 more
doaj   +1 more source

Crystallization and Electrical Properties of Ge-Rich GeSbTe Alloys

open access: yesNanomaterials, 2022
Enrichment of GeSbTe alloys with germanium has been proposed as a valid approach to increase the crystallization temperature and therefore to address high-temperature applications of non-volatile phase change memories, such as embedded or automotive ...
Stefano Cecchi   +8 more
doaj   +1 more source

Structural and biochemical insights into the thermostable esterase Ta0887 from Thermoplasma acidophilum

open access: yesFEBS Open Bio, EarlyView.
In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey   +4 more
wiley   +1 more source

Isothermal Crystallization Kinetics of Poly(lactic acid) Stereocomplex/Graphene Nanocomposites [PDF]

open access: yesMaterials Research, 2017
The isothermal crystallization kinetics of PLA stereocomplex (scPLA) and scPLA/graphene oxide nanocomposites was investigated. scPLA was prepared by symmetric blending the two isomers, PLLA and PDLA and the scPLA nanocomposite by polymerization of the ...
Diego H. S. Souza   +2 more
doaj   +1 more source

Annealing Effect in Amorphous Fe-Co-B-Si-Nb According to Fe/Co Ratio

open access: yesMetals, 2023
These days, electric motor qualities and energy-saving problems are significant to our society. The critical component of these problems is related to magnetic materials. In this respect, here, we investigated the (FexCo1−x)72B19.2Si4.8Nb4 (0 ≤ x ≤ 1, at
Hyunsol Son   +3 more
doaj   +1 more source

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

Effect of aging temperature on the crystallization characteristics of bulk fe-based amorphous alloys

open access: yesMaterials Research Express
The high hardness performance of Fe-based amorphous alloys give them unique advantages in the field of wear-resistant materials, while the performance degradation after crystallization limits their application range. In this study, rod-shaped bulk Fe _41
Shangyu Yang   +3 more
doaj   +1 more source

REGULARITIES OF STRUCTURE FORMATION IN BIMETALLIC NANOPARTICLES WITH DIFFERENT CRYSTALLIZATION TEMPERATURES

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2021
In this work, of the structure formation was investigated using Au-Ag, Ti-Al, Ti-V bimetallic nanoparticles as the patterns. These bimetallic nanoparticles have different atomic size mismatches and different crystallization temperatures.
V.S. Myasnichenko   +5 more
doaj   +1 more source

Magnetization versus heat treatment in rapidly solidified NdFeB alloys [PDF]

open access: yes, 1990
NdFeB melt-spun amorphous or partially amorphous alloys of four compositions were prepared. Their crystallization kinetics induced by thermal treatment was studied by differential scanning calorimetry and scanning and transmission electron microscopy ...
Suriñach, Santiago (Suriñach Cornet)   +4 more
core   +1 more source

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

open access: yesAdvanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares   +3 more
wiley   +1 more source

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