ball milling of nb sn

Alireza NOURI | Researcher | PhD | RMIT University ...

2022-1-3 · The elemental Ti, Sn and Nb powders were mechanically alloyed in a planetary ball mill for a short period of time using two types of PCA, namely stearic... View Porous Titanium with …

Materials Science Forum Vol. 802 | Scientific

The milling process was conducted in a planetary ball milling using stainless steel vials (225 mL) and balls (19 mm diameter), rotary speed of 300 rpm, and a ball-to-powder weight ratio of 10:1. Hot pressing of mechanically alloyed Ti-Nb-Si-B powders was performed under vacuum at …

CiteSeerX — MICROSTRUCTURE EVOLUTION OF TI-SN-NB …

Results indicated that ball milling to 8 h led to the formation of a supersaturated hcp α-Ti and partial amorphous phase due to the solid solution of Sn and Nb into Ti lattice. The microstructure of the bulk sintered Ti-16Sn-4Nb alloy samples made from the powders at shorter ball milling times, i.e. 20 min- 2 h, exhibited a primary α ...

Enhanced thermoelectric properties of n-type NbCoSn half ...

2016-6-1 · Here we report the thermoelectric properties of NbCoSn-based n-type half-Heuslers (HHs) that were obtained through arc melting, ball milling, and hot pressing process. With 10% Sb substitution at the Sn site, we obtained …

MICROSTRUCTURE EVOLUTION OF TI-SN-NB ALLOY …

2016-12-2 · MICROSTRUCTURE EVOLUTION OF TI-SN-NB ALLOY PREPARED BY MECHANICAL ALLOYING A. Nouri, J. G. Lin, ... Results indicated that ball milling to 8 h led to the formation of a supersaturated hcp α-Ti and partial amorphous phase due to the solid solution of Sn and Nb into Ti lattice. The microstructure of the bulk sintered Ti-16Sn-4Nb alloy samples ...

Enhanced thermoelectric properties of n-type NbCoSn …

2019-9-14 · 2Sn, Sn, Nb 3Sn, etc., which deteriorates TE performance, especially the electron transport properties. To investigate the properties of compositions with better purity, we studied NbCoSn 1−xSb x with x = 0–0.15 by arc melting, ball milling, and hot pressing. As widely reported,2,3 7–9 this approach effectively helps

Andrey VORONIN | PhD | National University of Science …

The effects of Sn and Y doping on thermoelectric properties of a Heusler Fe1.5TiSb semiconductor was studied. ... (V,Nb)Sb-based compounds. ... Here we show …

Comminution

Reprinted with permission from A. Nouri, P.D. Hodgson, C. Wen, Effect of ball-milling time on the structural characteristics of biomedical porous Ti–Sn–Nb alloy, Mater Sci …

2021-11-5 · Effect of Sn addition on the high-temperature oxidation behaviour of high Nb-containing TiAl alloys, Corrosion Science, 2020, 166: 108449. 2. Wei Xu, Miao Chen, Xin Lu*, Da-wei Zhang, Harsh-preet Singh, Jian-shu Yu, Yu Pan, Xuan-hui Qu, Chao-zong Liu, Effect of Mo content on corrosion and tribocorrosion behaviours of Ti-Mo orthopaedic alloys fabricated by …

Mechanical Alloying of the Fe1-xMx (M=Si, Ge, Sn). A ...

Ball Milling of Fullerene and Mechanical Alloying of Fullerene-Metal Systems ... p.103. The Study of Structural Evolution and Thermal Stability of Ball-Milled Ti-Al and Ti-Al-Mn-Nb Nanocrystalline Powders p.109. Mechanical Alloying in Fe 2 O ... Mechanical Alloying of the Fe 1-x M x (M=Si, Ge, Sn). A Comparative Study. Article Preview. Abstract ...

Synthesis and characterization of mechanically alloyed ...

The RETSCH High Energetic Planetary Ball Mill PM100 was used as milling equipment, where milling was carried out in WC media at a vial speed of 200 rpm up to a maximum of 30 h of duration. After each milling trial of 5 h, 15 h, and 30 h duration, milling was stopped, and a small proportion of powder samples are examined subjected to different ...

High-Energy Ball Mill Processing

2015-3-30 · Sn in Nb 0 25 Sn in Fe 0 66 Al in Pd 15 50 Cu in Al 0 33 Co in B 0 50 Ga in As 0 50 Fetch and coworkers [6], studying the production of pure nanocrystalline metals by milling, obtained fcc metals (Fe, Cr, Nb, W) and hc metals (Zr, Hf, Co, Ru) with grain sizes of the order of

Nanocrystals by high energy ball milling

2021-9-4 · The Nb 3 Sn was successfully prepared by a fast and convenient method in which the mixture of the Nb, Sn, and Cu powder was mechanically alloyed followed by heat treatment. The morphology, crystal structure, and critical temperature were measured by SEM, XRD, and VSM. The results show that with increased milling time, the size of the powders becomes …

Equiaxial nano-crystals Nb 3 Al superconductor prepared …

2018-12-4 · The influence of the original nominal chemical composition, milling time, sintering temperature and holding time was studied systematically on the phase formation, microstructure and superconductivity of mechanically alloyed Nb 3 Al. By optimizing the process, we have successfully prepared high-performance Nb 3 Al superconductor. Samples with original …

Synthesis of Ti-Sn-Nb alloy by powder metallurgy

Results indicated that ball milling to 8 h led to the development of a supersaturated hcp α-Ti and partial amorphous phase due to the solid solution of Sn and Nb into Ti lattice. The bulk Ti–16Sn–4Nb alloy made from the powders ball milled for a short time, up to 2 h, exhibited a primary α and a Widmanstätten ...

Preparation of Nb 3 Al by high-energy ball milling and ...

The A15 phase superconductor Nb 3 Al has been considered as an alternative to Nb 3 Sn for high field and large scale applications. However, to prepare a stoichiometric Nb 3 Al with fine grain structures is very difficult. High-energy ball milling is a solid state powder processing technique and is a very useful for preparing Nb-Al alloys (Nb3Al).

Mechanical Alloying

Reprinted with permission from A. Nouri, P.D. Hodgson, C. Wen, Effect of ball-milling time on the structural characteristics of biomedical porous Ti–Sn–Nb alloy, Mater Sci …

Lead-Free Solder System Bi5-Ag3-Cu0.5-Sn Prepared by ...

Influence of Particle Size on the Hydrogen Sorption Properties of Ball-Milled MgH 2 with Nb 2 O 5 as Catalyst p.447 Lead-Free Solder System Bi5-Ag3-Cu0.5-Sn Prepared by Mechanical Alloying

Synthesis of Ti–Sn–Nb alloy by powder metallurgy

Results indicated that ball milling to 8 h led to the development of a supersaturated hcp α-Ti and partial amorphous phase due to the solid solution of Sn and Nb into Ti lattice. The bulk Ti–16Sn–4Nb alloy made from the powders ball milled for a short time, up to 2 h, exhibited a primary α and a Widmanstätten ...

Fabrication of a β Ti–30Nb–4Sn Biomedical Alloy ...

A Ti–30Nb–4Sn weight percentage alloy was fabricated using a powder metallurgy technique consisting of high energy ball milling and consolidation at various temperatures. The initial powdered materials were mixed and milled for 3 and 6 hr. The powders were then compacted and sintered at a temperature of 900–1000 °C.

New nanoscale artificial pinning centres for NbTi ...

2021-1-15 · The T C value decreases with milling time to 6.9 K after 40 h of ball-milling, a much larger decrease than the 8% reduction in T C observed previously in the ball milling of Nb–Ti without Y 2 O 3 attributed to the additional structural disorder, lattice strains and impurities introduced into the powder by ball-milling.

Recovery of niobium and tantalum by solvent extraction ...

Recovery of niobium and tantalum by solvent extraction from Sn–Ta–Nb mining tailings† Olga Rodr´ıguez, a Francisco J. Alguacil,a Esther Escudero Baquero,a Irene Garc´ıa- D´ıaz,a Paloma Fernandez,´ b Belen Sotillo´ b and Felix A. L´ opez´ *a The slag from the extraction processes of metals from their ores may contain valuable components that, if

Synthesizing a high value-added composite photocatalyst ...

2021-2-18 · The main components of waste capacitors are BaTiO3, Ag, Pd, Sn, Ni, Nb, and Pb, which are valuable to recycle. At present acid leaching is applied to separate metals from capacitors. However, the process is complex and will cause secondary ...

Effect of Nb and Sn on the transformation of α-Ti to β-Ti ...

This study was conducted to observe the phase transformation of Ti-35 %Nb-2.5 %Sn during milling for various milling times using a mixing machine and a high-energy ball milling machine (HEBM). In this work, niobium was chosen as the β stabilizer and tin as the reducer of the elastic modulus. The starting materials were blended and milled in a mixing machine (24 h) and a …

Origin of stabilization and destabilization in solid-state ...

2016-12-23 · Electrode performance of the samples was examined for the carbon composite samples prepared by ball-milling. As-prepared Li 1.3 Nb 0.3 Me 0.4 O 2 (Me=Fe 3+, Mn 3+ and V 3+) were mixed with ...

2021-11-15 · Effect of Sn addition on the high-temperature oxidation behaviour of high Nb-containing TiAl alloys, Corrosion Science, 2020, 166: 108449. [4] Xin Lu*, Yu Pan, Weibin Li, Fang Yang, Muhammad D. Hayat, Harshpreet Singh, Wenwen Song, Xuanbui Qu, Peng ...

Phase transformations in ball-milled Ti–40Nb and Ti–45Nb ...

2014-2-1 · In the fourth set of experiments a gas atomized Ti powder was mixed with Nb powder to obtain a composition of Ti–40Nb (further called Ti–40Nb (at./250 rpm)) this experiment the rotating speed was 250 rpm and the milling was interrupted for 15 min after every 15 min.The ball-to-powder ratio was 20:1; the ball diameters were 10 mm.The milling was carried out with 2 …