Инд. авторы:	Litasov K.D., Rashchenko S.V., Shmakov A.N., Palyanov Y.N., Sokol A.G.
Заглавие:	Thermal expansion of iron carbides, Fe7C3 and Fe3C, at 297-911 K determined by in situ X-ray diffraction
Библ. ссылка:	Litasov K.D., Rashchenko S.V., Shmakov A.N., Palyanov Y.N., Sokol A.G. Thermal expansion of iron carbides, Fe7C3 and Fe3C, at 297-911 K determined by in situ X-ray diffraction // Journal of Alloys and Compounds. - 2015. - Vol.628. - P.102-106. - ISSN 0925-8388. - EISSN 1873-4669.
Внешние системы:	DOI: 10.1016/j.jallcom.2014.12.138; SCOPUS: 2-s2.0-84920747309; WoS: 000349084100016;
Реферат:	eng: The thermal expansion of Fe-carbides Fe7C3 and Fe3C was measured above and below the ferromagnetic transition in a temperature range of 297-911 K by in situ X-ray diffraction enhanced by synchrotron radiation. The coefficient of thermal expansion was estimated as alpha = a(0) + a(1)T. The results for paramagnetic phases are a(0) = 3.1 x 10(-5) K-1 and a(1) = 1.2 x 10(-8) K-2 for Fe7C3 and a(0) = 3.9 x 10(-5) K-1 and a(1) = 1.2 x 10(-8) K-2 for Fe3C. The ferromagnetic phases show linear relations with V-298K = 371.9 angstrom(3), a(0) = 0.91 x 10(-5) K-1 and a(1) = 0 for Fe7C3 and V-298K = 155.2 angstrom(3), a = 0.86 x 10(-5) K-1 and a(1) = 0 for Fe3C. Our obtained results indicate that the coefficients of thermal expansion, that were calculated by high-pressure equations of state for Fe-carbides, appeared to be high-precision and consistent with the data obtained at 0.1 MPa. (C) 2014 Elsevier B.V. All rights reserved.
Ключевые слова:	GPA; TEMPERATURE; STABILITY; MANTLE; DIAMOND; CEMENTITE; C SYSTEM; Iron carbide; Thermal expansion; In situ X-ray diffraction; Thermochemistry; NEUTRON-DIFFRACTION; CARBON; EARTHS CORE;
Издано:	2015
Физ. характеристика:	с.102-106