Synthesis of a Composite Alloy Based on Ore Concentrate and Oxide Compounds

The conditions for the synthesis of Al-Cr-W alloys during the aluminothermic reduction of a mineral tungsten concentrate - scheelite were considered. The alloys were identified as an aluminum matrix by the methods of elemental and X-ray phase analyzes. It is shown that the alloy synthesized from scheelite concentrate contains small amounts of iron and oxygen impurities (1.2 wt. %). It has been established that the alloys have a composite structure: inclusions of continuously solid solutions based on chromium and tungsten, as well as chromium aluminides Al3(Cr, W, Fe)2, which have increased microhardness values (12.9 GPa) are distributed in the aluminum matrix.

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X-ray diffraction study on the distribution of lithium ions in ? spinel solid solutions

Solid State Ionics ◽

10.1016/s0167-2738(97)00156-2 ◽

1997 ◽

Vol 101-103 (1-2) ◽

pp. 527-531 ◽

Cited By ~ 1

Author(s):

E Wolska

Keyword(s):

Diffraction Study ◽

Solid Solutions ◽

X Ray Diffraction ◽

Lithium Ions ◽

X Ray ◽

Spinel Solid Solutions

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Synthesis of Ce1−xPdxO2−δ Solid Solution in Molten Nitrate

Catalysts ◽

10.3390/catal10060640 ◽

2020 ◽

Vol 10 (6) ◽

pp. 640

Author(s):

Hideaki Sasaki ◽

Keisuke Sakamoto ◽

Masami Mori ◽

Tatsuaki Sakamoto

Keyword(s):

Electron Microscopy ◽

Solid Solution ◽

Solid Solutions ◽

Photoelectron Spectroscopy ◽

Synthesis Method ◽

X Ray Diffraction ◽

X Ray ◽

Transmission Electron ◽

Co Precipitation ◽

Ionic States

CeO2-based solid solutions in which Pd partially substitutes for Ce attract considerable attention, owing to their high catalytic performances. In this study, the solid solution (Ce1−xPdxO2−δ) with a high Pd content (x ~ 0.2) was synthesized through co-precipitation under oxidative conditions using molten nitrate, and its structure and thermal decomposition were examined. The characteristics of the solid solution, such as the change in a lattice constant, inhibition of sintering, and ionic states, were examined using X-ray diffraction (XRD), scanning electron microscopy–energy-dispersive X-ray spectroscopy (SEM−EDS), transmission electron microscopy (TEM)−EDS, and X-ray photoelectron spectroscopy (XPS). The synthesis method proposed in this study appears suitable for the easy preparation of CeO2 solid solutions with a high Pd content.

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ZnWO4 Nanoparticle Scintillators for High Resolution X-ray Imaging

Nanomaterials ◽

10.3390/nano10091721 ◽

2020 ◽

Vol 10 (9) ◽

pp. 1721

Author(s):

Heon Yong Jeong ◽

Hyung San Lim ◽

Ju Hyuk Lee ◽

Jun Heo ◽

Hyun Nam Kim ◽

...

Keyword(s):

Particle Size ◽

Zinc Oxide ◽

High Resolution ◽

Tungsten Oxide ◽

Spatial Resolution ◽

High Spatial Resolution ◽

X Ray ◽

X Ray Imaging ◽

Average Size ◽

And Tungsten

The effect of scintillator particle size on high-resolution X-ray imaging was studied using zinc tungstate (ZnWO4) particles. The ZnWO4 particles were fabricated through a solid-state reaction between zinc oxide and tungsten oxide at various temperatures, producing particles with average sizes of 176.4 nm, 626.7 nm, and 2.127 μm; the zinc oxide and tungsten oxide were created using anodization. The spatial resolutions of high-resolution X-ray images, obtained from utilizing the fabricated particles, were determined: particles with the average size of 176.4 nm produced the highest spatial resolution. The results demonstrate that high spatial resolution can be obtained from ZnWO4 nanoparticle scintillators that minimize optical diffusion by having a particle size that is smaller than the emission wavelength.

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Imido complexes of molybdenum and tungsten(VI); X-ray crystal structure of cis-(η1-CF3SO3)2 W(NBut)2(NH2But)2

Polyhedron ◽

10.1016/s0277-5387(00)86297-x ◽

1989 ◽

Vol 8 (24) ◽

pp. 2947-2949 ◽

Cited By ~ 15

Author(s):

Andreas A. Danopoulos ◽

Geoffrey Wilkinson ◽

Michael B. Hursthouse ◽

Bilquis Hussain

Keyword(s):

Crystal Structure ◽

X Ray ◽

Imido Complexes ◽

And Tungsten

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X-ray and neutron scattering study of the Nb-O solid solutions

Journal of Alloys and Compounds ◽

10.1016/s0925-8388(97)00485-4 ◽

1998 ◽

Vol 266 (1-2) ◽

pp. 230-233 ◽

Cited By ~ 4

Author(s):

S. Danilkin ◽

H. Fuess ◽

E. Jadrowski ◽

T. Wieder ◽

H. Wipf

Keyword(s):

Neutron Scattering ◽

Solid Solutions ◽

X Ray ◽

Scattering Study ◽

Neutron Scattering Study

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X-ray powder diffraction and Mössbauer spectroscopic studies on the solubility limits in γ-FeOOH/γ-AIOOH solid solutions

Journal of Materials Science ◽

10.1007/bf00356674 ◽

1994 ◽

Vol 29 (12) ◽

pp. 3269-3273 ◽

Cited By ~ 6

Author(s):

E. Wolska ◽

J. Šubrt ◽

Z. Hába ◽

J. Tláskal ◽

U. Schwertmann

Keyword(s):

Powder Diffraction ◽

Solid Solutions ◽

Spectroscopic Studies ◽

X Ray

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Mechanically Driven Dissolution of Sn in Near-Equiatomic Bcc FeCo

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.194.187 ◽

2012 ◽

Vol 194 ◽

pp. 187-193 ◽

Cited By ~ 3

Author(s):

J.M. Loureiro ◽

Benilde F.O. Costa ◽

Gerard Le Caër ◽

Bernard Malaman

Keyword(s):

Magnetic Field ◽

Solid Solutions ◽

Room Temperature ◽

Hyperfine Magnetic Field ◽

Ternary Alloys ◽

119Sn Mössbauer Spectroscopy ◽

X Ray Diffraction ◽

Mechanically Alloyed ◽

Powder Mixtures ◽

X Ray

Ternary alloys, (Fe50−x/2Co50−x/2)Snx(x ≤ 33 at.%), are prepared by mechanical alloying from powder mixtures of the three elements. As-milled alloys are studied by X-ray diffraction and 57Fe and 119Sn Mössbauer spectroscopy. The solubility of Sn in near-equiatomic bcc FeCo is increased from ~0.5 at. % at equilibrium to ~20 at.% in the used milling conditions. The average 119Sn hyperfine magnetic field at room temperature is larger, for any x, than the corresponding fields in mechanically alloyed Fe-Sn solid solutions.

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