Mössbauer analysis of Fe−N austenites

1992 ◽  
Vol 69 (1-4) ◽  
pp. 513-516 ◽  
Author(s):  
I. Fall ◽  
J. -M. R. Génin
Keyword(s):  
Mössbauer Analysis

Mössbauer analysis of BIOX treatment of ores at Wiluna gold mine, Western Australia

2012 ◽  
Vol 218 (1-3) ◽  
pp. 95-99 ◽  
Author(s):  
F. M. Gagliardi ◽  
J. D. Cashion
Keyword(s):  
Western Australia ◽  
Gold Mine ◽  
Mössbauer Analysis

EXAFS and Mössbauer analysis of Pt-Ir catalysts

1989 ◽  
Vol 158 (1-3) ◽  
pp. 203-205 ◽  
Author(s):  
J.A. Sawicki ◽  
T. Tyliszczak ◽  
F.E. Wagner ◽  
J.H. Rolston ◽  
A.P. Hitchcock ◽  
...  
Keyword(s):  
Mössbauer Analysis

Mössbauer analysis of crystallization in Joule-heated Fe80B20

1995 ◽  
Vol 140-144 ◽  
pp. 313-314 ◽  
Author(s):  
F. Malizia ◽  
F. Ronconi ◽  
P. Allia ◽  
M. Knobel ◽  
P. Tiberto ◽  
...  
Keyword(s):  
Mössbauer Analysis

Mössbauer Analysis

2015 ◽  
pp. 341-352 ◽  
Author(s):  
Ko Mibu ◽  
Masaaki Tanaka ◽  
Kohei Hamaya
Keyword(s):  
Mössbauer Analysis

Mössbauer analysis of high-energy mechanical-milled sand fraction of a magnetic soil developing on basalt

LACAME 2010 ◽  
2011 ◽  
pp. 167-173
Author(s):  
José Flávio Marcelino Borges ◽  
Marlon Luiz Hneda ◽  
André Maurício Brinatti ◽  
João Batista Marimon da Cunha ◽  
Jadir Aparecido Rosa ◽  
...  
Keyword(s):  
High Energy ◽  
Sand Fraction ◽  
Magnetic Soil ◽  
Mössbauer Analysis

Mössbauer analysis of synthetic djerfisherite

1979 ◽  
Vol 43 (328) ◽  
pp. 552-553 ◽  
Author(s):  
C. Blaauw ◽  
C. G. White ◽  
W. Leiper ◽  
D. B. Clarke
Keyword(s):  
Mössbauer Analysis

Structure refinement and crystal chemistry of tokkoite and tinaksite from the Murun massif (Russia)

2017 ◽  
Vol 81 (2) ◽  
pp. 251-272 ◽  
Author(s):  
M. Lacalamita ◽  
E. Mesto ◽  
E. Kaneva ◽  
F. Scordari ◽  
G. Pedrazzi ◽  
...  
Keyword(s):  
Exchange Reaction ◽  
Diffraction Data ◽  
Structure Refinement ◽  
Local Stress ◽  
Geometrical Parameters ◽  
X Ray Diffraction ◽  
Triclinic Space Group ◽  
X Ray ◽  
Lattice Constants ◽  
Mössbauer Analysis

AbstractThe structures of tokkoite, K2Ca4[Si7O18OH](OH,F) and tinaksite, K2Ca2NaTi[Si7O18OH]O from the Murun massif (Russia) were refined from single-crystal X-ray diffraction data in the triclinic space group P1̄. Average crystallographic data are a ≈ 10.423, b ≈ 12.477, c ≈ 7.112 Å, α ≈ 89.92°, β ≈ 99.68°, γ ≈ 92.97°, V ≈ 910.5 Å3 for tokkoite; a ≈ 10.373, b ≈ 12.176, c ≈ 7.057 Å, α ≈ 90.82°, β ≈ 99.22°, γ ≈ 92.80°, V ≈ 878.5 Å3 for tinaksite. The substantial similarities between the geometrical parameters of the tokkoite and tinaksite structures led us to conclude that the two minerals are isostructural. However, major differences of tokkoite with respect to tinaksite are larger lattice constants, especially concerning the b parameter, longer <M–O> distances, especially <M1–O>; larger values of the M1–M3 and O20–O2 bond lengths, and a stronger distortion of the M1 polyhedron. Mössbauer analysis showed that significant trivalent iron is present, VIFe3+ 40.0(7)% in tokkoite and 12.8(3)% in tinaksite. It is confirmed that 2Ca(M1+M2)2+ + (F,OH)(O20)–↔ Ti(M1)4+ + Na(M2)+ + O(O20)– is the exchange reaction that describes the relation between tokkoite and tinaksite. In addition, this exchange reaction causes local stress involving mainly the M1 site and its interaction with the M2 and M3 sites.

scholarly journals Mössbauer Analysis of Deformation–Induced Acceleration of Short-Range Concentration Separation in Fe-Cr Alloys—Effect of the Substitution Impurity: Sb and Au

Metals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 725
Author(s):  
Valery Shabashov ◽  
Kirill Kozlov ◽  
Yurii Ustyugov ◽  
Andrey Zamatovskii ◽  
Timofey Tolmachev ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Mössbauer Spectroscopy ◽  
Severe Plastic Deformation ◽  
Positron Annihilation ◽  
Temperature Region ◽  
Short Range ◽  
Mossbauer Spectroscopy ◽  
Short Range Ordering ◽  
Mössbauer Analysis ◽  
Effect Of Doping

The effect of doping the ferrite alloy Fe-16Cr by the oversized impurities Sb and Au on the mechanism of the short-range ordering induced by “warm” severe plastic deformation was studied using the method of Mössbauer spectroscopy. A comparison between the results obtained and the positron annihilation data on the evolution of the defects of vacancy type stabilized by the impurities Sb and Au was performed. It has been established that the impurities Sb and Au entail a shift of the temperature region of short-range ordering realization in conditions of applying pressure torsion towards greater temperatures by 250 and 100 K, respectively.

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