X-Ray and Neutron Diffraction Studies on Gamma-Ni, Zn and Gamma-Fe, Zn.

Johansson, Anders; Ljung, Hans; Westman, Sven; Norin, Torbjörn

doi:10.3891/acta.chem.scand.22-2743

Cited by 98 publications

(75 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The G phase is bcc with the g Cu 5 Zn 8 brass type and I m 43 space group. Concerning the stoichiometry, Brandon et al 14 indicate that it is Fe 3 Zn 10 (ICSD code 2094), Belins 15 give Fe 13 Zn 39 (ICSD code 150198) and Johansson et al 16 give Fe 4 Zn 9 (ICSD code 103708). Employing the CIFs for all these four stoichiometries, we obtained virtually the same refined lattice parameter of a = 0.8972 nm, but the correspondence between the structural model and the measured data was the best for the Fe 13 Zn 39 stoichiometry.…”

Section: Resultsmentioning

confidence: 99%

Fe-Zn intermetallic phases prepared by diffusion annealing and spark-plasma sintering

Pokorný¹,

Cinert²,

Pala³

2016

Mater. Tehnol.

View full text Add to dashboard Cite

The feasibility of iron-zinc intermetallic-phase preparation by spark-plasma sintering (SPS) was investigated. The samples were prepared with a combination of powder metallurgy, where the powder was prepared in evacuated quartz tubes, and a sintering process using SPS. Since the Fe-Zn intermetallic phases are mostly used for hot-dip galvanized steels, the knowledge of the properties of individual intermetallic phases is vital for a better understanding and even further optimization of galvanization processes. The main aim of the article is to compare the phase composition of the initial powder with the SPS samples using X-ray diffraction. Furthermore, the hardness and microstructure were investigated as well. Keywords: Fe-Zn intermetallics, spark-plasma sintering, diffusion annealing, phase composition, hardness Preu~evana je bila izvedljivost priprave`elezo-cink intermetalnih faz s sintranjem v iskre~i plazmi (SPS). Vzorci so bili pripravljeni s pomo~jo metalurgije prahov, kjer so bili prahovi zaprti v evakuirane kvar~ne cevi, ki mu je sledil postopek SPS. Ker se Fe-Zn intermetalne faze ve~inoma uporablja pri vro~em cinkanju jekel, so lastnosti posamezne faze pomembne za bolj{e razumevanje in celo za optimiranje procesa galvanizacije. Glavni namen~lanka je primerjava sestave faz s pomo~jo rentgenske difrakcije v za~etnih prahovih in SPS vzorcih. Preiskovani sta bili tudi trdota in mikrostruktura. Klju~ne besede: Fe-Zn intermetalne zlitine, sintranje z iskre~o plazmo, difuzijsko`arjenje, sestava faz, trdota

show abstract

Section: Resultsmentioning

confidence: 99%

Fe-Zn intermetallic phases prepared by diffusion annealing and spark-plasma sintering

Pokorný¹,

Cinert²,

Pala³

2016

Mater. Tehnol.

View full text Add to dashboard Cite

show abstract

“…Fe atoms and Zn atoms occupy the fixed positions which indicate that the À phase is a kind of ordered intermetallic compounds. Johansson et al, 4) Brandon et al 5) and Claude et al 6) had studied the single crystals of À phase by X-ray diffraction. The common viewpoints of the studies were that the À phase has a cubic structure which is shown to be of the brass Cu 5 Zn 8 type with the spacegroup of I " 4 43m.…”

Section: )mentioning

confidence: 99%

“…8,9) The propose of present work is to investigate the structure of À phase in a commercial galvannealed steel sheet by electron diffraction. Then the computer simulation of electron diffraction patterns was carried out based on the previous works of Johansson et al, 4) Brandon et al 5) and Claude et al 6) Comparing the results of electron diffraction experiments and computer simulation propose the structure of À phase in a commercial galvannealed steel sheet.…”

Section: Introductionmentioning

confidence: 99%

“…In the galvanizing process, The steel sheets are first immersed in a zinc bath and then undergo a post-coating heat treatment to form the Fe-Zn intermediate phases: À (Fe 3 Zn 10 -bcc), À 1 (FeZn 4 or Fe 11 Zn 40 -fcc), 1k or 1p (FeZn 7 or FeZn 10 -hexagonal) and (FeZn 13 -base centered monoclinic). Among them, the À phase is always adjacent to the substrate steel.…”

Section: Introductionmentioning

confidence: 99%

“…There were some studies about À phase based on X-ray diffraction [3][4][5][6] which had been conducted on single crystals prepared by special methods. There were no direct observation or research on a galvannealed steel sheet because of the inconvenient of preparing specimen.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electron Diffraction Study on Fe–Zn Γ intermetallic Phase of a Galvannealed IF Steel Sheet

Liu

Zhang

et al. 2005

Mater. Trans.

View full text Add to dashboard Cite

In order to investigate the structure of Fe-Zn À phase in a commercial galvannealed IF steel sheet, the electron diffraction and composition of À phase in a commercial galvannealed IF steel sheet were studied by transmission electron microscope (TEM) and X-ray energy dispersive spectroscopy (EDX). The cross-sectional TEM specimen was prepared using focused ion beam (FIB) technique which was also introduced briefly. The results show that there exist superlattice reflections in the selected area diffraction patterns (SADPs) of À phase which indicate that the À phase is a kind of ordered intermetallic compound. The results of computer simulation of electron diffraction patterns based on the single crystals X-ray diffraction of previous researchers give a advice to the atomic coordinates of À phase in a commercial galvannealed IF steel sheets.

show abstract

Binary Compounds of Rhodium and Zinc: RhZn, Rh2Zn11, and RhZn13

Groß

Kotzyba

Künnen

et al. 2001

Z. anorg. allg. Chem.

View full text Add to dashboard Cite

The title compounds were prepared by reaction of the elements at elevated temperatures in sealed silica tubes. Single crystals of RhZn and RhZn 13 were obtained by slow cooling of samples with a high zinc content after dissolving the zinc-rich matrix in hydrochloric acid. Their crystal structures were determined from single-crystal X-ray diffractometer data. RhZn has a CsCl type structure: Pm3m, a = 300.9(1) pm. RhZn 13 has a CoZn 13 type structure: C2/m, a = 1090.8(2) pm, b = 753.7(2) pm, c = 512.7(1) pm, b = 101.02(2)°. The structure of Rh 2 Zn 11 is isotypic with Cu 5 Zn 8 , the c-brass structure. It was refined from X-ray diffractometer powder data: I43m, a = 909.1(1) pm. In these structures all atoms have high coordination numbers. The structure of RhZn 13 contains relatively large unoccupied voids. It is suggested that they accommodate nonbonding electrons. Electrical conductivity measurements of Rh 2 Zn 11 and RhZn 13 indicate metallic behavior, however, with an unexpectedly high resistivity for Rh 2 Zn 11 . The expected Pauli paramagnetism of these compounds is overcompensated by the core diamagnetism, suggesting a low density of states at the Fermi level especially for Rh 2 Zn 11 . This correlates with the high electrical resistivity of this compound.Bina È re Verbindungen von Rhodium und Zink: RhZn, Rh 2 Zn 11 und RhZn 13 Inhaltsu È bersicht. Die Titelverbindungen wurden durch Reaktion der Elemente bei hohen Temperaturen in evakuierten Quarzglasampullen hergestellt. Einkristalle von RhZn und RhZn 13 wurden durch langsames Abku È hlen von Proben mit hohem Zinkgehalt nach Auflo È sen der zinkreichen Matrix in Salzsa È ure erhalten. Ihre Kristallstrukturen wurden anhand von Einkristall-Diffraktometerdaten bestimmt. RhZn hat CsCl-Struktur: Pm3m, a = 300.9(1) pm. RhZn 13 kristallisiert in der CoZn 13 -Struktur: C2/m, a = 1090.8(2) pm, b = 753.7(2) pm, c = 512.7(1) pm, b = 101.02(2)°. Die Struktur von Rh 2 Zn 11 ist isotyp mit Cu 5 Zn 8 (c-Messing). Sie wurde anhand von Ro È ntgen-Pulverdiffraktometerdaten verfeinert: I43m, a = 909.1(1) pm. In diesen Strukturen haben alle Atome hohe Koordinationszahlen. In der Struktur von RhZn 13 treten relativ groûe unbesetzte Lu È cken auf. Es wird vermutet, dass sie nichtbindende Elektronen beinhalten. Elektrische Leitfa È higkeitsmessungen von Rh 2 Zn 11 und RhZn 13 zeigen metallisches Verhalten, jedoch mit einem ungewo È hnlich hohen elektrischen Widerstand von Rh 2 Zn 11 . Der zu erwartende Pauli-Paramagnetismus dieser Verbindungen wird durch den Diamagnetismus der Rumpfelektronen u È berkompensiert. Besonders ausgepra È gt ist dies fu È r Rh 2 Zn 11 , was eine geringe Zustandsdichte an der Fermi-Kante erwarten la È ût. Dies korreliert mit dem hohen elektrischen Widerstand dieser Verbindung.

show abstract

X-Ray and Neutron Diffraction Studies on Gamma-Ni, Zn and Gamma-Fe, Zn.

Cited by 98 publications

References 0 publications

Fe-Zn intermetallic phases prepared by diffusion annealing and spark-plasma sintering

Fe-Zn intermetallic phases prepared by diffusion annealing and spark-plasma sintering

Electron Diffraction Study on Fe–Zn Γ intermetallic Phase of a Galvannealed IF Steel Sheet

Binary Compounds of Rhodium and Zinc: RhZn, Rh2Zn11, and RhZn13

Contact Info

Product

Resources

About

X-Ray and Neutron Diffraction Studies on Gamma-Ni, Zn and Gamma-Fe, Zn.

Cited by 98 publications

References 0 publications

Fe-Zn intermetallic phases prepared by diffusion annealing and spark-plasma sintering

Fe-Zn intermetallic phases prepared by diffusion annealing and spark-plasma sintering

Electron Diffraction Study on Fe&ndash;Zn &Gamma; intermetallic Phase of a Galvannealed IF Steel Sheet

Binary Compounds of Rhodium and Zinc: RhZn, Rh2Zn11, and RhZn13

Contact Info

Product

Resources

About

Electron Diffraction Study on Fe–Zn Γ intermetallic Phase of a Galvannealed IF Steel Sheet