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The phase system Fe-Ir-S at 1100, 1000 and 800°C
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Abstract
Phase relations in the dry condensed Fe-Ir-S system were determined at 1100,
1000 and 800°C. Orientational runs were performed at 500°C. Between 1100 and
800°C, the system comprises five sulphides and an uninterrupted field of γ(Fe,Ir).
Fe1-xS dissolves 5.8 at.% Ir
at 1100°C, 3.4 at.% Ir at 1000°C and 1.0 at.% Ir at 800°C. The solubility of Fe in
Ir2S3, IrS2 and
IrS~3 increases with decreasing temperature, reaching 2.5
at.% in the latter two sulphides at 800°C. Thiospinel
‘FeIr2S4— is non-stoichiometric, from
Fe22.3Ir19.8S58.0
to
Fe18.9Ir23.1S58.0,
depending on aS and
aFe, i.e. on a phase
association. Thiospinel is absent at 800 and 500°C.
Title: The phase system Fe-Ir-S at 1100, 1000 and 800°C
Description:
Abstract
Phase relations in the dry condensed Fe-Ir-S system were determined at 1100,
1000 and 800°C.
Orientational runs were performed at 500°C.
Between 1100 and
800°C, the system comprises five sulphides and an uninterrupted field of γ(Fe,Ir).
Fe1-xS dissolves 5.
8 at.
% Ir
at 1100°C, 3.
4 at.
% Ir at 1000°C and 1.
0 at.
% Ir at 800°C.
The solubility of Fe in
Ir2S3, IrS2 and
IrS~3 increases with decreasing temperature, reaching 2.
5
at.
% in the latter two sulphides at 800°C.
Thiospinel
‘FeIr2S4— is non-stoichiometric, from
Fe22.
3Ir19.
8S58.
0
to
Fe18.
9Ir23.
1S58.
0,
depending on aS and
aFe, i.
e.
on a phase
association.
Thiospinel is absent at 800 and 500°C.
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