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201854 · The atomic radius of Nb, W and Zr are 0.143, 0.137 and 0.160 nm respectively. The element W being small, atoms as compared to the size of Nb atoms
contact198261 · 72Eff: Van Effenterre, P., “Study of the Equilibrium Diagram and Structural Transformations Obtained by Quenching at Different Rates or Tempering of Zr−Nb Alloys
contactNb-alloys like C-103 (89 wt% Nb, 10 wt% Hf, 1 wt% Ti) or Nb-1Zr (~99 wt% Nb, 1 wt% Zr) are generally easier to fabricate and more workable than Mo-alloys although they have
contactNiobium (Nb), Titanium (Ti), and Zirconium (Zr) have attracted much attention as implant materials due to it's excellent mechanical properties and biocompatibility. However, little
contact201671 · As the material of fuel claddings for water cooled reactors most commonly used binary and multicomponent zirconium alloys Zr-Nb (E110,M5), Zr-Sn-Fe (Zircaloy-2,
contact2 · The Zr + 1% Nb alloy of type N-1 E-110 is used for fuel element claddings, the Zr + 2.5% Nb alloy of type E-125 is applied for tubes of assembly channels. The cladding material for the new 17×17 fuel
contact2022820 · Different cases for Zr-Nb alloys with unit cells having BCC and HCP structures are considered. Optimal values of the lattice constants are obtained. Critical
contact2021525 · Niobium-Zirconium alloys (Nb-1Zr) and PWC-11 alloys (Nb-1Zr-0.1C) have been used in the SP-100 design as basic materials for lithium coolant boundaries,
contact：. Superconducting amorphous alloys with high strength and good ductility have been found in rapidly quenched alloys of the Zr-Nb-Si system. These alloys were produced in
contact： Oxidation behavior of Zr-10Nb-10Ti and Zr-10Nb-20Ti (compositions are in atomic percent) alloys has been investigated in air between 300 and 700°C. Higher Ti
contact2020820 · Nb-Hf alloys (niobium and hafnium) ... Chad E. Dutya, Steven J. Zinklea, ... Spectral interference studies on Nb, Ta, Ti, Fe, Mn, Sn, W, Zr, Al, Si, Mg, and Ca were carried out in the presence of ...
contactJournal of Phase Equilibria and Diffusion. 2022. The Nb-Zr system was reassessed based on calculated theoretical data and available thermodynamic and phase equilibria data. The Gibbs energies of the bcc and hcp solid phases were described using…. Expand. Highly Influenced. View 5 excerpts, cites methods and background.
contact2023315 · The reason for accelerated corrosion of Zr-Nb alloys in lithiated water is discussed from the rapid oxidation of β-Nb precipitates. ... "Oxidation behavior of niobium in oxide layer of zirconium ...
contact2019117 · The effect of Nb content on microstructure, mechanical properties and superelasticity was studied in Ti-Nb alloys fabricated by powder metallurgy route using mechanical alloying and spark plasma sintering. In the microstructure of the as-sintered materials, undissolved Nb particles as well as precipitations of α-phase at grain
contact2005711 · Zr-2,5 % Nb alloy are widely used as structural material for pressure tubes of channel nuclear power reactors with heavy pressured water (CANDU-PHW) and boiler water (RBMK, Fugen). Tensile and creep behavior of Zr-2,5 % Nb alloy significantly depend on heat treatment. To satisfy design requirements to reactor pressure tubes Zr-2,5 % Nb
contact2020102 · The alloy was vacuum annealed at 1350–1800 °C to study the stability of Nb 2 C and Nb(Zr)C carbide precipitates in the microstructure. Compression creep tests conducted at 900 and 1000 °C revealed a stress exponent value of 2 and activation energy of 508 kJ/mol. NbSi 2 -based coatings were developed on the Nb-1Zr-0.1C alloy tubes
contact20151130 · Niobium (Nb), vanadium (V), and tantalum (Ta) are the so-called refractory metals, and they have much higher hydrogen permeability at temperatures below 300 °C in comparison to palladium
contact2022512 · The first results on the activation process and mechanisms of novel quinary alloy Ti–Zr–V–Hf–Nb non-evaporable getter (NEG) film coatings with copper substrates were presented. About 1.075 µ m of Ti–Zr–V–Hf–Nb NEG film coating was deposited on the copper substrates by using the DC sputtering method.
contact2022820 · Different cases for Zr-Nb alloys with unit cells having BCC and HCP structures are considered. Optimal values of the lattice constants are obtained. Critical value for the niobium concentration corresponding to the structural transformation HCP → BCC at zero temperature is defined.
contact：. Superconducting amorphous alloys with high strength and good ductility have been found in rapidly quenched alloys of the Zr-Nb-Si system. These alloys were produced in a continuous ribbon form of 1 to 2 mm width and 0.02 to 0.03 mm thickness using a modified single roller quenching apparatus. The amorphous alloys were formed over the ...
contactThe individual and combined effects of W and Zr additions on macrostructure, microstructure and mechanical properties of Nb have been investigated. Nb, Nb-10 wt% W, Nb-2.5 wt% Zr and Nb-10 wt% W-2.5 wt% Zr alloy ingots were prepared by electron beam drip melting using high purity Nb, W and Zr rods. Additions of W and Zr resulted in significant
contact198261 · 72Eff: Van Effenterre, P., “Study of the Equilibrium Diagram and Structural Transformations Obtained by Quenching at Different Rates or Tempering of Zr−Nb Alloys (0–55% Nb)”, Report CEA-R-4330, Atomic Energy
contact201211 · In order to characterize the amount of oxidized Nb as function of oxide depth in Zr–0.4Nb alloy, microbeam (0.2 m spatial resolution) XANES measurements were performed at the Advanced Photon ...
contact2023315 · The reason for accelerated corrosion of Zr-Nb alloys in lithiated water is discussed from the rapid oxidation of β-Nb precipitates. ... "Oxidation behavior of niobium in oxide layer of zirconium ...
contact202055 · 9188 curvature of the Amhenius plots is diminished, a curvature nevertheless remains clearly visible. This is shown in figure 2, left panel.Up to a Nb concentration of 28.1 at.% the Arrhenius plot of Zr self-diffusion in the Zr-Nb alloys has still not become entirely linear. P Knorr and C Herzig T,/T 4 low 12W 1400 1600 I800 T KI IO
contact2019117 · The effect of Nb content on microstructure, mechanical properties and superelasticity was studied in Ti-Nb alloys fabricated by powder metallurgy route using mechanical alloying and spark plasma sintering. In the microstructure of the as-sintered materials, undissolved Nb particles as well as precipitations of α-phase at grain
contact2020102 · The alloy was vacuum annealed at 1350–1800 °C to study the stability of Nb 2 C and Nb(Zr)C carbide precipitates in the microstructure. Compression creep tests conducted at 900 and 1000 °C revealed a stress exponent value of 2 and activation energy of 508 kJ/mol. NbSi 2 -based coatings were developed on the Nb-1Zr-0.1C alloy tubes
contact2022820 · Different cases for Zr-Nb alloys with unit cells having BCC and HCP structures are considered. Optimal values of the lattice constants are obtained. Critical value for the niobium concentration corresponding to the structural transformation HCP → BCC at zero temperature is defined.
contact2022512 · The first results on the activation process and mechanisms of novel quinary alloy Ti–Zr–V–Hf–Nb non-evaporable getter (NEG) film coatings with copper substrates were presented. About 1.075 µ m of Ti–Zr–V–Hf–Nb NEG film coating was deposited on the copper substrates by using the DC sputtering method.
contact2021525 · Niobium-Zirconium alloys (Nb-1Zr) and PWC-11 alloys (Nb-1Zr-0.1C) have been used in the SP-100 design as basic materials for lithium coolant boundaries, reactor shells and parts inside fuel casings. Nb-1Zr alloy has 50% higher yield strength than pure Niobium and has the same corrosion resistance as pure Niobium in many solutions.
contact2022823 · Niobium-zirconium (Nb-Zr) alloy is an old superconductor that is a promising new candidate for superconducting radio-frequency (SRF) cavity applications. Using density-functional and Eliashberg...
contact2020529 · The Zr–Nb alloys are widely used structural materials of modern nuclear power plants, where they undergo a significant neutron irradiation. In the present work, the cascades of atomic displacements in the Zr–n%Nb binary alloy (n = 0.5%, 1%, 1.5%, 2%, 2.5%, 3%) at temperatures 0 and 600K are studied by means of the molecular dynamics ...
contactThe individual and combined effects of W and Zr additions on macrostructure, microstructure and mechanical properties of Nb have been investigated. Nb, Nb-10 wt% W, Nb-2.5 wt% Zr and Nb-10 wt% W-2.5 wt% Zr alloy ingots were prepared by electron beam drip melting using high purity Nb, W and Zr rods. Additions of W and Zr resulted in significant
contact2023315 · The reason for accelerated corrosion of Zr-Nb alloys in lithiated water is discussed from the rapid oxidation of β-Nb precipitates. ... "Oxidation behavior of niobium in oxide layer of zirconium ...
contact202055 · 9188 curvature of the Amhenius plots is diminished, a curvature nevertheless remains clearly visible. This is shown in figure 2, left panel.Up to a Nb concentration of 28.1 at.% the Arrhenius plot of Zr self-diffusion in the Zr-Nb alloys has still not become entirely linear. P Knorr and C Herzig T,/T 4 low 12W 1400 1600 I800 T KI IO
contactThe proposed alloy exhibits the lowest known values of elastic modulus (27.27-37.7 GPa) for dental and orthopedic implant products [25] compared to other modern zirconium alloys such as: Zr-Nb (72 ...
contact2022820 · Different cases for Zr-Nb alloys with unit cells having BCC and HCP structures are considered. Optimal values of the lattice constants are obtained. Critical value for the niobium concentration corresponding to the structural transformation HCP → BCC at zero temperature is defined.
contact：. Superconducting amorphous alloys with high strength and good ductility have been found in rapidly quenched alloys of the Zr-Nb-Si system. These alloys were produced in a continuous ribbon form of 1 to 2 mm width and 0.02 to 0.03 mm thickness using a modified single roller quenching apparatus. The amorphous alloys were formed over the ...
contact2022512 · The first results on the activation process and mechanisms of novel quinary alloy Ti–Zr–V–Hf–Nb non-evaporable getter (NEG) film coatings with copper substrates were presented. About 1.075 µ m of Ti–Zr–V–Hf–Nb NEG film coating was deposited on the copper substrates by using the DC sputtering method.
contactAuthor: Publisher: ISBN: Format: PDF, ePub, Mobi Release: 1994 Language: en View... Ettects of processing history on the creep strength of Nb - 1Z1 ( DE93-015905 ) 05 p1689 N94-20093 Alloying effects on mechanical and metallurgical properties of NiAI ( DE93-040814 ) 05 p1694 N94-21948 Creep damage of carbon fiber ...
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