Results 211 to 220 of about 60,948 (246)

Investigation of Zr, Gd/Zr, and Pr/Zr – doped ceria for the redox splitting of water

International Journal of Hydrogen Energy, 2020
Abstract There is a renewed interest in CeO2 for use in solar-driven, two-step thermochemical cycles for water splitting. However, despite fast reduction/oxidation kinetics and high thermal stability of ceria, the cycle capacity of CeO2 is low due to thermodynamic limitations.
Darwin Arifin, Andrea Ambrosini, Steven A. Wilson, Bennett Mandal, Christopher L. Muhich, Alan W. Weimer   +5 more
openaire   +1 more source

On the Singlet Spectrum of ZrS

Journal of Molecular Spectroscopy, 1998
Three electronic transitions in the singlet manifold of the zirconium sulphide (ZrS) molecule have been rotationally analyzed. They are the B1Pi-X1Sigma+, C1Sigma+-X1Sigma+, and E1Sigma+-X1Sigma+ systems with (0,0) band heads at 924.60, 731.51, and 494.47 nm, respectively.
, Jonsson, , Wallin, , Lindgren
openaire   +2 more sources

Zr/Mg, Zr/Sr and Zr/Zn co-doped hydroxyapatites: Synthesis and characterization

Ceramics International, 2016
Abstract Zr/Mg, Zr/Sr and Zr/Zn co-doped hydroxyapatite samples, having high crystallinity, prepared by sol–gel synthesis were characterized via X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) spectroscopy. Based on the XRD results, it is shown that the kind
Omer Kaygili, Serhat Keser
openaire   +1 more source

INVESTIGATION OF Zr-ZrN, Zr,Hf-(Zr,Hf)N AND Zr,Nb-(Zr,Nb)N COATINGS DEPOSITED ON A TITANIUM ALLOY SUBSTRATE

High Temperature Material Processes An International Quarterly of High-Technology Plasma Processes
The properties of Zr-ZrN, Zr,Hf-(Zr,Hf)N and Zr,Nb-(Zr,Nb)N coatings deposited on a Ti6Al-4V titanium alloy substrate were studied. It has been established that the introduction of hafnium increases, and niobium reduces the hardness of the coating. The introduction of hafnium also increases, and niobium reduces, the value of the critical fracture load ...
Alexey Vereschaka, Catherine Sotova, Filipp Milovich, Jury Bublikov, Valery Zhylinski, Kirill Makarevich, Natalia Baranova   +6 more
openaire   +1 more source

Low-Temperature Specific Heats of Zr-Ti, Zr-Hf, and Zr-Sc Alloys

Physical Review, 1968
The specific heats of hexagonal Zr-Ti, Zr-Hf, and Zr-Sc alloys were measured at 1.1 to 4.2\ifmmode^\circ\else\textdegree\fi{}K. Maxima in both the electronic specific-heat coefficient $\ensuremath{\gamma}$ and the superconducting transition temperature ${T}_{c}$ were observed at 60 at.% Ti in the Zr-Ti system.
J. O. Betterton, J. O. Scarbrough
openaire   +1 more source

On the Stability and Structure of Zr-Cu and Zr-Ti-Cu Alloys

Solid State Phenomena, 1998
The alloys Zr-Cu-Ti and Zr-Cu have been prepared by melt-spinning and mechanical alloying techniques. Their thermal behaviour and structure factors have been investigated. Thermal properties obtained by differential scanning calorimetry, of an amorphous alloy (54Zr34Cu10Ti), were tested in argon and nitrogen atmospheres.
Radojevic, BB, Chattopadhyay, Kamanio, Bhattacharya, P, Davidovic, M   +3 more
openaire   +2 more sources

Contribution to the Zr-rich part of the Zn-Zr phase diagram

Journal of Phase Equilibria and Diffusion, 2004
The reaction of zinc vapor with Zircaloy-4 and nuclear grade zirconium was investigated with various analytical techniques: optical metallography, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Based on the results, the Zr-rich part of the Zn-Zr phase diagram was revised. A eutectoid decomposition of (βZr) occurs at 718±
Maureen E. Williams, William J. Boettinger, Ursula R. Kattner   +2 more
openaire   +1 more source

Diffusion and chemical activity of Zr-Sn and Zr-Ti systems

Physical Review B, 1986
A modified evaporation method was used to determine the diffusion coefficients and the emission rates of Sn and Ti in Zr-Sn and Zr-Ti, respectively, at temperatures between 1605 and 1970 K. Results show that both Sn and Ti diffuse in their respective alloys via a vacancy mechanism.
, Zee, , Watters, , Davidson
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Photoemission study of Pd Zr and Cu Zr alloys

Solid State Communications, 1980
The XPS valence bands and core levels of the alloys Pd1−xZrx ...
P. Steiner, M. Schmidt, S. Hüffner
openaire   +1 more source

Semi-automated production of ⁸⁹Zr-oxalate/⁸⁹Zr-chloride and the potential of ⁸⁹Zr-chloride in radiopharmaceutical compounding.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine, 2016
Interest in using (89)Zr is rapidly increasing for immuno-PET applications due to its unique characteristics and increased availability. The focus of this study was to develop an optimized semi-automated methodology for producing (89)Zr-oxalate/(89)Zr-chloride, and evaluate the potential application of (89)Zr-chloride for radiopharmaceutical ...
Mai, Lin, Uday, Mukhopadhyay, Gregory J, Waligorski, Julius A, Balatoni, Carlos, González-Lepera   +4 more
openaire   +2 more sources