Reversible alpha-Fe2O3 to Fe3O4 transformation during ball milling

被引：34

作者：

Linderoth, S ^{[1
]}

Jiang, JZ ^{[1
]}

Morup, S ^{[1
]}

机构：

[1] TECH UNIV DENMARK, DEPT PHYS, DK-2800 LYNGBY, DENMARK

来源：

SYNTHESIS AND PROPERTIES OF MECHANICALLY ALLOYED AND NANOCRYSTALLINE MATERIALS, PTS 1 AND 2 - ISMANAM-96 | 1997年 / 235-2卷

关键词：

phase transformation; iron oxides; ball milling; Mossbauer spectroscopy; XRD;

D O I：

10.4028/www.scientific.net/MSF.235-238.205

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The transformation of hematite to magnetite by high-energy ball milling in a sealed container has been studied by Mossbauer spectroscopy and x-ray diffraction. Mechanisms for this transformation are critically discussed. The dominant mechanism is concluded to be due to bond breaking during the high energy ball milling followed by release of the oxygen from the vial. The reverse transformation, magnetite to hematite, is demonstrated to occur by ball milling in air. Mechanisms for this reverse transformation are also put forward.

引用

页码：205 / 210

页数：6

共 10 条

[1] Mechanochemical transformation of haematite to magnetite [J].

Campbell, SJ ;

Kaczmarek, WA ;

Wang, GM .

NANOSTRUCTURED MATERIALS, 1995, 6 (5-8) :735-738

[2] NANOCRYSTALLINE METALS PREPARED BY HIGH-ENERGY BALL MILLING [J].

FECHT, HJ ;

HELLSTERN, E ;

FU, Z ;

JOHNSON, WL .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1990, 21 (09) :2333-2337

[3] EFFECT OF SQUEEZING ON PHASE TRANSFORMATION AND MAGNETIC PROPERTIES OF GAMMA-FE2O3 [J].

GOTO, Y .

JAPANESE JOURNAL OF APPLIED PHYSICS, 1964, 3 (12) :739-&

[4] PREPARATION OF FE3O4 AND GAMMA-FE2O3 POWDERS BY MAGNETOMECHANICAL ACTIVATION OF HEMATITE [J].

KACZMAREK, WA ;

NINHAM, BW .

IEEE TRANSACTIONS ON MAGNETICS, 1994, 30 (02) :732-734

[5] MILLING AND MECHANICAL ALLOYING OF INORGANIC NONMETALLICS [J].

KOSMAC, T ;

COURTNEY, TH .

JOURNAL OF MATERIALS RESEARCH, 1992, 7 (06) :1519-1525

[6] FE-AL2O3 NANOCOMPOSITES PREPARED BY HIGH-ENERGY BALL-MILLING [J].

LINDEROTH, S ;

PEDERSEN, MS .

JOURNAL OF APPLIED PHYSICS, 1994, 75 (10) :5867-5869

[7] REDUCTION OF HEMATITE WITH CARBON BY ROOM-TEMPERATURE BALL MILLING [J].

MATTEAZZI, P ;

LECAER, G .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1991, 149 (01) :135-142

[8]

Morup S., 1980, APPLICATIONS MOSSBAU, VII, P1

[9]

OLSEN J, IN PRESS

[10]

Topsoe H., 1974, J Phys Colloq, V35, pC6

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