Results 11 to 20 of about 9,251,353 (260)

High-resolution solid state NMR experiments for the characterization of calcium phosphate biomaterials and biominerals [PDF]

open access: yes, 2011
Calcium phosphates form a vast family of biominerals, which have attracted much attention in fields like biology, medicine, and materials science, to name a few.
Hanna, John   +55 more
core   +5 more sources

Defect structure in yttrium, niobium and lead substituted bismuth oxide solid electrolytes [PDF]

open access: yes, 2009
PhDBismuth oxide based electrolytes are well known for their high oxide ion conductivity at intermediate temperatures (300-700C). Indeed, the defect fluorite structured -phase of Bi2O3 shows the highest known oxide ion conductivity of any material ...
Liu, Xi
core   +4 more sources

Superprotonic Solid Acids: Thermochemistry, Structure, and Conductivity [PDF]

open access: yes, 2013
In this work, in order to investigate the thermochemistry and property of the superprotonic solid acid compounds, the measurement methods were established for in situ observation, because superprotonic phases are neither stable at room temperature nor ...
Ikeda, Ayako
core   +1 more source

Application of X-ray Microtomography to Quantify the Liquid Fraction of M2 Steel for Semi-solid Forming process [PDF]

open access: yes, 2013
Thixoforging, one variant of semi-solid metal processing in which the metallic alloys are processed at low liquid fraction (0.1< Fl < 0.3), is used to produce complex parts with high mechanical properties.
GU, Guochao   +4 more
core   +1 more source

Ultrasonic line source and its coupling with the tool induced heat generation and material flow in friction stir welding

open access: yesJournal of Materials Research and Technology, 2022
To understand the synchronous interaction mechanism between the ultrasonic vibration exerted on the tool and the tool induced thermo-mechanical behavior in ultrasonic vibration-assisted friction stir welding (UVaFSW) process, the geometric shape of the ...
Guanlan Zhang   +2 more
doaj   +1 more source

Numerical simulation of friction stir lap welding of Al-to-Mg alloys under different lap configurations and pin lengths

open access: yesJournal of Materials Research and Technology, 2022
The lap configurations and pin lengths have important influences on the joint quality and performance in Al-to-Mg friction stir lap welding (FSLW). But how these two factors affect the thermo-mechanical process in Al-to-Mg FSLW remains unclear.
Ming Zhai, ChuanSong Wu, Lei Shi
doaj   +1 more source

Dihedral Angle Measurements for Structure Determination by Biomolecular Solid-State NMR Spectroscopy [PDF]

open access: yes, 2021
In structural studies of immobilized, aggregated and self-assembled biomolecules, solid-state NMR (ssNMR) spectroscopy can provide valuable high-resolution structural information.
van der Wel, Patrick; id_orcid   +1 more
core   +2 more sources

Enhancement of the Al/Mg Dissimilar Friction Stir Welding Joint Strength with the Assistance of Ultrasonic Vibration

open access: yesMetals, 2021
The assistance of ultrasonic vibration during the friction stir welding (FSW) process has been verified as an effective approach for the improvement of joint strength.
Yinghao Bai, Hao Su, Chuansong Wu
doaj   +1 more source

Modified constitutive equation by using phase field simulation of dynamic recrystallization in friction stir welding

open access: yesJournal of Materials Research and Technology, 2021
The application of appropriate constitutive equation describing the relationship between the flow stress, temperature and strain rate is essential to get deep insight into the process mechanism of friction stir welding (FSW).
Chunliang Yang, ChuanSong Wu, Song Gao
doaj   +1 more source

The Structure and Bonding of a Radium Coordination Compound in the Solid-State [PDF]

open access: yes, 2023
The structure and bonding of radium (Ra) is poorly understood because of challenges arising from its radioactivity and scarcity. Herein, we report the first synthesis and characterization of a molecular Ra2+ compound in the solid state by single crystal ...
Frankie, White   +3 more
core   +1 more source

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