Results 81 to 90 of about 11,389,564 (282)

Efficient methods of X-ray diffraction pattern inversion

open access: yesResults in Physics, 2019
An innovative, computational approach to the problem of X-ray diffraction pattern inversion is presented. The technique approximates the electron density of the trial structures encountered during the structure-fitting part of the inversion process with ...
Ian Gregory Shuttleworth
doaj   +1 more source

Rapidly Solidified High‐Strength Invar 36 Prepared by Planar‐Flow Melt Spinning

open access: yesAdvanced Engineering Materials, EarlyView.
The Invar 36 alloy was rapidly solidified using the planar‐flow melt‐spinning technique. Ribbon samples with thicknesses ranging from 20 to 160 mm were produced. As the grain size of the ribbon decreased to sub‐micron levels, the hardness increased by more than 2 times.
Bekir Akgül, Mehmet Kul
wiley   +1 more source

Feasibility and Limitations of the Advanced Replica Process for Bioactive Glasses

open access: yesAdvanced Engineering Materials, EarlyView.
Periodic 3D‐printed Kelvin‐cell templates enable a controlled advanced replica process for fabricating highly porous glass lattices. Across P45K9, 45S5, and 13–93, material‐dependent differences in coating, burnout, and shrinkage lead to distinct strut morphologies, while comparable final porosities of 83%–88% are retained.
Swantje Funk   +4 more
wiley   +1 more source

Characterization of defect structures in nanocrystalline materials by X-ray line profile analysis [PDF]

open access: yes, 2007
X-ray line profile analysis is a powerful alternative tool for determining dislocation densities, dislocation type, crystallite and subgrain size and size-distributions, and planar defects, especially the frequency of twin boundaries and stacking faults.
Tamás Ungár   +3 more
core   +1 more source

Investigating the Low‐Temperature Phase Stability of the Binary Ta–W System

open access: yesAdvanced Engineering Materials, EarlyView.
Atomistic simulations show that the binary Ta–W system forms ordered intermetallic phases, B2‐TaW and D03‐TaW3, as 0 K ground states. Configurational entropy, however, lowers the free energy of the disordered bcc solid solution, which becomes the stable phase above about 400 K.
Klemens Lechner   +7 more
wiley   +1 more source

X-ray diffraction on a single crystal: first Bragg peak

open access: yes, 2010
Single crystal X-ray diffractometer experiment with lithium fluoride crystal showing the first diffraction peak at the first Bragg angle. From TLP:http://www.msm.cam.ac.uk/doitpoms/tlplib/xray-diffraction/single_crystal.php > X-ray diffraction [...]
DoITPoMS, University of Cambridge
core  

Redetermination of the γ-form of tellurium dioxide

open access: yesIUCrData, 2017
The crystal structure of γ-TeO2 was redetermined on the basis of single-crystal X-ray diffraction data. The previous structure determination of this modification was based on laboratory powder X-ray diffraction data [Champarnaud-Mesjard et al. (2000). J.
Matthias Weil
doaj   +1 more source

High‐Entropy Alloy Interlayers Toward Advanced Joining for High‐Performance Structural Applications: Current Progress and Emerging Challenges

open access: yesAdvanced Engineering Materials, EarlyView.
HEA interlayers offer a versatile route for joining high‐performance structural materials. Their compositional and structural design regulates interfacial reactions, suppresses brittle IMCs, and improves metallurgical bonding. Sandwich interlayers further integrate defect healing with precipitation strengthening, enabling improved strength–ductility ...
Lin Yuan   +4 more
wiley   +1 more source

X-ray diffraction on a single crystal: second Bragg peak

open access: yes, 2010
Single crystal X-ray diffractometer experiment with lithium fluoride crystal showing the second diffraction peak at the second Bragg angle.
DoITPoMS, University of Cambridge
core  

Lattice Deformation Measurement under Shock Wave Loading by Pulsed X-ray Diffraction

open access: yesYuanzineng kexue jishu, 2022
Shock of condensed matter is ubiquitous in nature, yet a full understanding of the response when shock waves propagate into solids is still lacking because of a lack of real-time microstructural data. Pulsed X-ray diffraction technique is being developed
TANG Bo;HEI Dongwei;MA Ge;XIA Jingtao;SHENG Liang;WEI Fuli;LUO Jianhui;LI Yunliang;TAN Shushun
doaj  

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