Results 61 to 70 of about 13,680 (309)
MetalsZirconium (Zr) and hafnium (Hf) are very important in nuclear and high-temperature applications, but their similar physical and chemical properties bring great challenges to separation.
Shuo Tian +6 more
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Phase diagrams for the M2MoO4–Ln2(MoO4)3–Hf(MoO4)2 systems, where M = Li–Cs, Tl and Ln = La–Lu
Chimica Techno Acta, 2017 In this paper, the results of systematic studies of complex molybdate systems M2MoO4–Ln2(MoO4)3–Hf(MoO4)2 (M = Li–Cs, Tl; Ln = La–Lu) are presented. Subsolidus phase diagrams of ternary systems were constructed and new triple molybdates were obtained ...
Zh. G. Bazarova +5 more
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New Journal of Physics, 2020 In view of the fact that the fast-neutron experimental cross-section data of hafnium which is an important structural material of fusion reactor are few and there are the great differences in their evaluation values, several activation cross sections of (
Yong Li +6 more
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On the New Element Hafnium [PDF]
Nature, 1923 IN a former letter to NATURE (January 20, p. 79) we announced the discovery of a new element with atomic number 72, for which the name hafnium was proposed. Evidence was given that this element is a homologue of zirconium in accordance with theoretical expectations (Bohr, “Theory of Spectra and Atomic Constitution,” p. 114, Camb. Univ.
D. Coster, G. Hevesy
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Zirconium-hafnium equilibria [PDF]
, 1962 Equilibria in the thiocyanate-methyl isobutyl ketone process for the separation of zirconium and hafnium were studied. The effects of average thiocyanate concentration, feed acidity, and feed zirconium concentration on the separation factor of hafnium ...
Eisen, Edwin Otto
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Dissolved neodymium and hafnium isotopes and rare earth element data of near-bottom water samples from RV Meteor cruise M147 [PDF]
The dataset comprises isotope compositions of dissolved neodymium (Nd) and hafnium (Hf), together with particulate Nd and Hf isotope data from surface estuarine sediments.
Xu, Antao +5 more
core +1 more source
Comparison of the Hafnium Diboride(0001) and Hafnium(0001) Surfaces [PDF]
, 1996 The surface properties of the (0001) surfaces of single crystals of hafnium and hafnium diboride are compared with a boride film deposited on the Hf(0001) surface. The surfaces were characterized with X-ray photoelectron spectroscopy (XPS) and low energy
M. Belyansky +3 more
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Advanced Engineering Materials, EarlyView.A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm +3 more
wiley +1 more source
SOME PROPERTIES OF HAFNIUM OXIDE, HAFNIUM SILICATE, CALCIUM HAFNATE AND HAFNIUM CARBIDE
Journal of the American Ceramic Society, 1954 The behavior of hafnium oxide was studied particularly in the temperature range 1500° to 18OO°C. Properties of HfO 2 at these temperatures and its reactions with ZrO 2 , SiO 2 , and CaO are given in terms of ...
C Curtis, L Doney, J Johnson
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Frontier Materials & TechnologiesThe paper studies the effect of hafnium and erbium additives on the microstructure formation during heat treatment of aluminium alloys with a high magnesium content additionally alloyed with scandium and zirconium.
Aleksandr A. Ragazin +5 more
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