Study on the Phase Equilibria of the Fe-Al-Ni-O System at 750°C

Table 1

Crystal structure data for the matrix phases and oxides in the Fe-Al-Ni-O system.

Phase	Pearson symbol	Space group	Lattice parameters (nm)			PDF no.
			α-Fe	cI2	Im3m		2.866	2.866	2.866	06-0696
γ-(Fe,Ni)	cI2	Im3m	2.868	2.868	2.868	37-0474
γ-(Fe,Ni)	cF4	Fm3m	3.598	3.598	3.598	47-1417
β-FeAl	cP2	Pm3m	2.881	2.881	2.881	33-0020
β-NiAl	cP2	Pm3m	2.910	2.910	2.910	65-5171
β-AlFe0.23Ni0.77	cP2	Pm3m	2.885	2.885	2.885	47-1126
γ-Ni3Al	cP4	Pm3m	3.572	3.572	3.572	65-6613
NiAl3	oP16	Parma	6.598	7.352	4.802	02-0416
Ni2Al3	hP5	P3m1	4.036	4.036	4.900	65-3454
Fe4Al13	mC102	C2/m	15.492	8.078	12.471	50-0797
Fe2Al5	oC14	Cmcm	7.649	6.413	4.216	47-1435
FeAl2	aP18	P1	4.878	6.461	8.748	33-0019
FeAl9Ni	mp22	P21/c	8.598	6.271	6.207	[16]
Fe3Al10Ni	hP28	P63/mmc	_	_	_	[16]
Al2O3 (corundum structure)	hR10	R3C	4.758	4.758	12.991	10-0173
Fe2O3 (corundum structure)	hR10	R3C	5.036	5.036	13.749	33-0664
Ni2O3 (corundum structure)	hp10	P	4.610	4.610	5.610	14-0481
FeAlO3 (corundum structure)	oP40	Pc21n(33)	8.566	9.249	4.989	30-0024
FeAl2O4 (spinel structure)	cF56	Fd3m	8.153	8.153	8.153	34-0192
NiAl2O4 (spinel structure)	cF56	Fd3m	8.048	8.048	8.048	10-0339
Fe3O4 (spinel structure)	cF56	Fd3m	8.090	8.090	8.090	65-3107
NiFe2O4 (spinel structure)	cF56	Fd3m	8.337	8.337	8.337	54-0964
FeO (NaCl structure)	cF8	Fm3m	4.293	4.293	4.293	46-1312
NiO (NaCl structure)	cF8	Fm3m	4.177	4.177	4.177	47-1049