Results 1 to 10 of about 43,710 (347)

The influence of hafnium on high-magnesium alloys doped with transition metals during heat treatment

Frontier Materials & Technologies
The purpose of the work is to study the influence of hafnium additives on the mechanical properties and thermal stability of particles at elevated temperature during heat treatment of aluminum alloys with a high magnesium content.
Igor A. Zorin, Evgeny V. Aryshenskiy, Egor A. Kudryavtsev, Aleksandr M. Drits, Sergey V. Konovalov   +4 more
doaj   +3 more sources

Oxygen diffusion saturation of hafnium with the different surface layer [PDF]

Ядерна фізика та енергетика, 2023
Hafnium is used for the production of control rods and protective screens in nuclear reactors after its hot plastic deformation and final thermochemical treatment.
V. S. Trush, I. M. Pohrelyuk, O. H. Luk’yanenko, S. M. Lavrys, T. M. Kravchyshyn   +4 more
doaj   +1 more source

Advances of hafnium based nanomaterials for cancer theranostics

Frontiers in Chemistry, 2023
Hafnium-based nanomaterials (Hf-NMs) have attracted the interest of numerous biomedical researchers by their unique properties. Recent years have witnessed significant advancements in the field of Hafnium-based nanomaterials, particularly in the context ...
Jiayi Wang, Jiahua Pan, Yijun Tang, Jingqi Chen, Xiaochen Fei, Wei Xue, Xueliang Liu   +6 more
doaj   +1 more source

Separation of Zirconium and Hafnium from Chloride Solution Using Strongly Basic Anion Resins [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2022
The ion exchange process was employed to separate zirconium from hafnium in solution. To this end, four effective parameters, involving resin type, HCl concentration, Time, and initial zirconium concentration, were selected as the main variables.
Meysam Nemati, Saeid Zandvakili, Saeid Alamdar Milani, Ali Yadolahi   +3 more
doaj   +1 more source

Determination of the vapour pressure curves and vaporization enthalpies of hafnium alkoxides using thermogravimetric analysis [PDF]

Royal Society Open Science, 2019
In order to identify a volatile metallo-organic precursor for the deposition of hafnium oxide (HfO2) films for atomic layer deposition (ALD) applications, the evaporative properties of hafnium alkoxides (hafnium isopropoxide, hafnium n-propoxide and ...
Changhong Wang, Shenghai Yang, Yongming Chen   +2 more
doaj   +1 more source

Methodology for Testing Key Parameters of Array-Level Small-Area Hafnium-Based Ferroelectric Capacitors Using Time-to-Digital Converter and Capacitance Calibration Circuits

Micromachines, 2023
Hafnium-based ferroelectric memories are a promising approach to enhancing integrated circuit performance, offering advantages such as miniaturization, compatibility with CMOS technology, fast read and write speeds, non-volatility, and low power ...
Donglin Zhang, Honghu Yang, Yue Cao, Zhongze Han, Yixuan Liu, Qiqiao Wu, Yongkang Han, Haijun Jiang, Jianguo Yang   +8 more
doaj   +1 more source

Changing the properties of diffusion-hardening solders hardened with titanium, zirconium, and hafnium powders

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2023
This article presents the results of a study of the properties of three diffusion-hardening solders based on low-melting gallium alloys and copper-tin alloy powder after the introduction of inert metal powders of titanium, zirconium, and hafnium in an ...
V.М. Skachkov, L.A. Pasechnik, I.S. Medyankina, N.A. Sabirzyanov   +3 more
doaj   +1 more source

Micro/mesoporous LTL derived materials for catalytic transfer hydrogenation and acid reactions of bio-based levulinic acid and furanics

Frontiers in Chemistry, 2022
The biomass-derived platform chemicals furfural and 5-(hydroxymethyl)furfural (HMF) may be converted to α-angelica lactone (AnL) and levulinic acid (LA). Presently, LA (synthesized from carbohydrates) has several multinational market players.
Margarida M. Antunes, Andreia F. Silva, Auguste Fernandes, Filipa Ribeiro, Patrícia Neves, Martyn Pillinger, Anabela A. Valente   +6 more
doaj   +1 more source

Flux syntheses and single-crystal structures of CsNa10M4(AsO4)9 (M = Zr, Hf)

Acta Crystallographica Section E: Crystallographic Communications, 2022
The isostructural compounds caesium decasodium tetrazirconium nonaarsenate, CsNa10Zr4(AsO4)9, and caesium decasodium tetrahafnium nonaarsenate, CsNa10Hf4(AsO4)9, arose as unexpected single-crystal products from the reactions of Na2CO3, MO2 (M = Zr, Hf ...
William T. A. Harrison
doaj   +1 more source

The solar photospheric abundance of hafnium and thorium. Results from CO5BOLD 3D hydrodynamic model atmospheres [PDF]

, 2008
Context: The stable element hafnium (Hf) and the radioactive element thorium (Th) were recently suggested as a suitable pair for radioactive dating of stars. The applicability of this elemental pair needs to be established for stellar spectroscopy. Aims:
Anders, Andersen, Arlandini, Caffau, Caffau, Caffau, Cayrel, Cayrel, Cowan, del Peloso, E. Caffau, François, Frebel, Freytag, Grevesse, Grevesse, H.-G. Ludwig, Hill, Holweger, Holweger, Holweger, Ivans, Kurucz, L. Sbordone, Lawler, Lawler, Lodders, M. Steffen, N. T. Behara, Neckel, P. Bonifacio, Rocholl, Russell, Sneden, Svensson, Wedemeyer   +35 more
core   +5 more sources