Journal 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
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,
contactNiobium (atomic symbol: Nb, atomic number: 41) is a Block D, Group 5, Period 5 element with an atomic weight of 92.90638. The number of electrons in each of niobium's shells is
contactTitanium-zirconium-niobium alloys (Ti-Zr-Nb) have potential to be used for solid and durable implants that are fully compatible with the human body. Ti-Zr-Nb alloys possess a high functional complex and so-called
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
contactNiobium Zirconium (Nb1Zr) Alloy Sheets is made of Nb-1Zr alloy with purity over 99.95%. Size available: Thickness 0.1-10 mm; Width 30-1000 mm; Length 30-3000 mm.
contact：The present invention is a medical implant or device (2) fabricated, in any manner, from a niobium (Nb) - titanium (Ti) - zirconium (Zr) - Molybednum (Mo) alloy (NbTiZrMo
contact2023324 · 위키백과, 우리 모두의 백과사전. 나이오븀, 니오븀 (← 영어: Niobium 나이오비엄[ *]) 또는 니오브 (← 독일어: Niob 니오프[ *] )는 화학 원소 로 기호는 Nb (←
contact2023313 · nióbium, Nb, 41 Latin megnevezés niobium Elemi sorozat átmenetifémek Csoport, periódus, mez ... 92 Zr γ 0,934 - 92 Nb mest. 3,47·10 7 év ε - 92 Zr γ 0,561,
contact20221027 · To understand the nanomechanical behaviors of the Nb-based alloys with Zr addition at room/high temperature, the molecular dynamics simulations of nanoindentation are conducted. In this work, the load-unload displacement curve, hardness, and dislocation characteristics of Nb-Zr alloys with varying Zr content ranging from 0 to 5
contact202141 · Dense niobium-based refractory alloy Nb521 with a high relative density of >99.19% was fabricated by EBSM. • All precipitates involved in the EBSM-built Nb521 sample mainly contain (Nb, Zr)C and Nb 2 C.. The precipitates near the free surface were precipitated in an intermittent chain along the grain boundary.
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 relatively lower strength than the latter. 155 As for other refractory materials, Nb-alloys can be fabricated by powder metallurgy obtaining properties similar to the ...
contact2020114 · However, little attention has been paid to high Nb-containing biomedical alloys. Here, the 50 wt.%Nb-XTi-Zr ternary alloy (x = 20wt.%, 30 wt.%, 40 wt.%) with relative density over 90% was prepared by powder metallurgy method. The massive α (Zr) distributed along the grain boundaries and lamellar β (Zr) appeared in the grains of β
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 attention has been paid to high Nb-containing biomedical alloys. Here, the 50 wt.%Nb-XTi-Zr ternary alloy(x = 20wt.%, 3
contact2018111 · For a geologist, the immobility of niobium is a key property that can be used to decipher past processes encoded in Earth's rock record (e.g., Cann 1970, Kurtz et al. 2000, Hastie et al. 2011).Despite this general belief that Nb is not mobile, there are vast Nb deposits in the world, which is indicative that a renewed understanding of Nb mobility
contact21 · The role of niobium in lightweight vehicle construction. Mater Sci Forum. 2007;537-538:679-86., 7 7 Erdeniz D, De Luca A, Seidman DN, Dunand DC. Effects of Nb and Ta additions on the strength and coarsening resistance of precipitation-strengthened Al-Zr-Sc-Er-Si alloys. Mater Charact. 2018;141:260-6.. In the process of automobile
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.
contact200151 · Piezoelectric Properties of Sb-, Li-, and Mn-substituted Pb(Zr x Ti 1-x)O 3 –Pb(Zn 1/3 Nb 2/3)O 3 –Pb(Ni 1/3 Nb 2/3)O 3 Ceramics for High-Power Applications; Piezoelectric Properties of Niobium-Doped [Pb(Sc 1/2 Nb 1/2) 1-x Ti x]O 3 Ceramics Material near the Morphotropic Phase Boundary
contact2023321 · The temperature dependence of thermal conductivity of both uranium and U–6%wt.Zr alloy can be expressed as a polynomial using the least squares fitting of the data. The thermal conductivity of U-6%wt.Zr in the temperature range of 298–823 K can be written as: (4) λ = 13.795 + 2.672 ∗ 10 - 2 T - 2.492 ∗ 10 - 6 T 2.
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...
contact2021219 · Niobium-92 is a short-lived p-process isotope that decays to 92 Zr with a half-life of 37 Ma. The initial 92 Nb/ 93 Nb ratio of the Solar System is crucial for utilizing the 92 Nb– 92 Zr chronometer, as it has the potential to provide information on early Solar System evolution and insights into the debated p-process nucleosynthesis.Herein, we
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.
contact2018111 · For a geologist, the immobility of niobium is a key property that can be used to decipher past processes encoded in Earth's rock record (e.g., Cann 1970, Kurtz et al. 2000, Hastie et al. 2011).Despite this general belief that Nb is not mobile, there are vast Nb deposits in the world, which is indicative that a renewed understanding of Nb mobility
contact20221027 · To understand the nanomechanical behaviors of the Nb-based alloys with Zr addition at room/high temperature, the molecular dynamics simulations of nanoindentation are conducted. In this work, the load-unload displacement curve, hardness, and dislocation characteristics of Nb-Zr alloys with varying Zr content ranging from 0 to 5
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 attention has been paid to high Nb-containing biomedical alloys. Here, the 50 wt.%Nb-XTi-Zr ternary alloy(x = 20wt.%, 3
contact20121029 · Just as in a seesaw similarly in Zr equal number of 2 electrons are present each for 6s and 5d orbitals which balances each others forces; however, in Nb as the new entrant electron is bound to enter into the vacant 5d orbital it helps in pulling 1 of the 2 electrons of 6s orbital into the 5d orbital due to sheer electronic number superiority ...
contact200151 · Piezoelectric Properties of Sb-, Li-, and Mn-substituted Pb(Zr x Ti 1-x)O 3 –Pb(Zn 1/3 Nb 2/3)O 3 –Pb(Ni 1/3 Nb 2/3)O 3 Ceramics for High-Power Applications; Piezoelectric Properties of Niobium-Doped [Pb(Sc 1/2 Nb 1/2) 1-x Ti x]O 3 Ceramics Material near the Morphotropic Phase Boundary
contact202086 · Creep Strength of Niobium Alloys, Nb-1%Zr and PWC-11 Robert H. Titran National Aeronautics and Space Administration Lewis Research Center Cleveland, Ohio 44135 Work performed for ... Nb-l%Zr alloy was received from ORNL in the form of cold worked l-mm sheet. Machined tensile creep specimens were annealed in high vacuum
contact2023324 · Isotopi. Il niobio che si trova in natura è composto da un solo isotopo, 93 Nb. Il radioisotopo più stabile noto è 92 Nb, che ha un'emivita di 34,7 milioni di anni. Seguono 94 Nb (20 300 anni) e 91 Nb (680 anni). Ne esiste anche un meta-stato avente energia di 0,031 MeV la cui emivita è di 16,13 anni [senza fonte].. Del niobio sono stati
contact20161112 · 2.3 Melting and Refining of Niobium and Preparation of Nb-Based Alloys. ... This is used to manufacture coolant tubes of Zr-2.5Nb alloy for heavy water nuclear reactors. Recently M/s MIDHANI, Hyderabad, has produced sheets of C-103 (Nb-10Hf-1Ti) alloy for satellite applications, starting from imported sheets of high purity raw material. ...
contact2021219 · Niobium-92 is a short-lived p-process isotope that decays to 92 Zr with a half-life of 37 Ma. The initial 92 Nb/ 93 Nb ratio of the Solar System is crucial for utilizing the 92 Nb– 92 Zr chronometer, as it has the potential to provide information on early Solar System evolution and insights into the debated p-process nucleosynthesis.Herein, we
contact20221027 · To understand the nanomechanical behaviors of the Nb-based alloys with Zr addition at room/high temperature, the molecular dynamics simulations of nanoindentation are conducted. In this work, the load-unload displacement curve, hardness, and dislocation characteristics of Nb-Zr alloys with varying Zr content ranging from 0 to 5
contact2023319 · Therefore, we have determined the physical decay patterns of 95 Zr– 95 Nb accumulated by rat tissues to determine whether some tissues show preference for zirconium-95, while others concentrate ...
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
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...
contact2023321 · The temperature dependence of thermal conductivity of both uranium and U–6%wt.Zr alloy can be expressed as a polynomial using the least squares fitting of the data. The thermal conductivity of U-6%wt.Zr in the temperature range of 298–823 K can be written as: (4) λ = 13.795 + 2.672 ∗ 10 - 2 T - 2.492 ∗ 10 - 6 T 2.
contact200231 · Niobium-92 (92 Nb) decays to zirconium-92 (92 Zr) with a half-life of 36 million years and can be used to place constraints on the site of p-process nucleosynthesis and the timing of early solar system processes.Recent results have suggested that the initial 92 Nb/ 93 Nb of the solar system was high (>10 −3).We report Nb-Zr internal isochrons
contact200151 · Piezoelectric properties of Pb 1-a Sr a (Ni 1/2 W 1/2) 0.02 (Mn 1/3 Nb 2/3) b (Zr x, Ti y) 1-0.02-b O 3) ceramics, to which 0.5 wt% PbO, 0.3 wt% Fe 2 O 3 and 0.25 wt% CeO 2 were added, were investigated at different compositions of a=0–0.06, b=0.05–0.09, x=0.49–0.51, and y=0.49–0.51. In the ceramics with a constant composition of a=0 and
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