Study of mechanically synthesized carbide Fe7C3

被引：17

作者：

Barinov, V. A. ^{[1
]}

Tsurin, V. A. ^{[1
]}

Surikov, V. T. ^{[2
]}

机构：

[1] Russian Acad Sci, Ural Div, Inst Met Phys, Ekaterinburg 620990, Russia

[2] Russian Acad Sci, Ural Div, Inst Solid State Chem, Ekaterinburg 620990, Russia

来源：

PHYSICS OF METALS AND METALLOGRAPHY | 2010年 / 110卷 / 05期

关键词：

iron carbides; mechanical synthesis; Curie temperature; Mossbauer investigations; phase transition; RANGE ATOMIC ORDER; IRON CARBIDES; FE3C; IDENTIFICATION; POWDER; ALLOY; CR7C3;

D O I：

10.1134/S0031918X10110074

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Magnetic properties and hyperfine interactions in the carbide Fe7C3 prepared by mechanical synthesis (MS) of alpha-Fe in toluene have been studied. It has been found that the boundary of temperature stability of the MS carbide does not exceed 775 K. The Curie temperature of the synthesized phase varies between 509 and 525 K. The Mossbauer experiments (Fe-57) have demonstrated that the unit cell of Fe7C3 contains 32 iron atoms distributed over five types of crystallographic positions with a multiplicity of 4: 8: 8: 8: 4. The hyperfine interaction parameters have been calculated for each nonequivalent position. It may be conjectured from the specific features of the decomposition at T a parts per thousand yen 775 K that the most probable sequence of the phase transitions in the MS carbides Fe-C is -> theta, where -Adcock carbide Fe7C3.

引用

页码：474 / 484

页数：11

共 30 条

[1]

Barinov VA, 2008, PHYS MET METALLOGR+, V105, P245, DOI [10.1134/S0031918X08030058, 10.1007/s11508-008-3005-1]

[2] Short-range atomic order in Fe2B powders [J].

Barinov, V. A. ;

Tsurin, V. A. ;

Novikov, S. I. ;

Shein, I. R. ;

Surikov, V. T. .

PHYSICS OF METALS AND METALLOGRAPHY, 2007, 103 (05) :470-480

[3]

Barinov V. A., USSR Inventor's Certificate No. 1678525. Filing for Application from 05, 1989, Patent No. 1678525

[4] STRUCTURAL EVOLUTION OF SPUTTERED AMORPHOUS FE1-XCX FILMS FOR 0.19-LESS-THAN-OR-EQUAL-TO X-LESS-THAN-OR-EQUAL-TO 0.49 [J].

BAUERGROSSE, E ;

LECAER, G .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1987, 56 (04) :485-500

[5]

BAUERGROSSE E, 1982, J PHYS PARIS S12, V43

[6] Ball milling of Fe-75-C-25: Formation of Fe3C and Fe7C3 [J].

Campbell, SJ ;

Wang, GM ;

Calka, A ;

Kaczmarek, WA .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 226 :75-79

[7] MODE OF TRANSITION FROM HAGG IRON CARBIDE TO CEMENTITE [J].

COHN, EM ;

HOFER, LJE .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1950, 72 (10) :4662-4664

[8] PRECISE STRUCTURAL IDENTIFICATION OF PRECIPITATED CARBIDES IN LOW-ALLOY STEELS AT DIFFERENT STAGES OF TEMPERING - MECHANICS OF PRECIPITATION [J].

DIRAND, M ;

AFQIR, L .

ACTA METALLURGICA, 1983, 31 (07) :1089-1107

[9]

DUPLESSIS HE, CRYSTAL STRUCTURES I

[10] A NEW IRON CARBIDE IN HYDROCARBON SYNTHESIS CATALYSTS [J].

ECKSTROM, HC ;

ADCOCK, WA .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1950, 72 (02) :1042-1043

← 1 2 3 →