Investigation of the reaction between Fe2O3 and Al accomplished by Ball Milling and Self-Propagating High-Temperature techniques

被引:14
作者
Cao, G
Concas, G
Corrias, A
Orru, R
Paschina, G
Simoncini, B
Spano, G
机构
[1] UNIV CAGLIARI,DIPARTIMENTO SCI FIS,I-09124 CAGLIARI,ITALY
[2] IST NAZL FIS MAT,I-09124 CAGLIARI,ITALY
[3] UNIV CAGLIARI,DIPARTIMENTO SCI CHIM,I-09124 CAGLIARI,ITALY
来源
ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES | 1997年 / 52卷 / 6-7期
关键词
aluminothermic reduction; Ball milling; self-propagating high-temperature synthesis; Mossbauer spectroscopy; x-ray diffraction; mechanism of reaction;
D O I
10.1515/zna-1997-6-713
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this work we investigate the mechanism of product formation of the aluminothermic reaction of Fe2O3 in the presence of Al2O3 using Ball Milling and Self-propagating High-temperature techniques. Results obtained by experiments under either argon or air atmosphere are analysed by X-ray diffraction and Mossbauer spectroscopy, together with microstructure observations. It is shown that ball milling products are strongly affected by the kind of atmosphere, while self-propagating high-temperature ones are only weakly influenced. Reaction mechanisms taking place in these cases are proposed. While ball milling involves only solid state reactions, the formation of a melt occurs under self-propagating high-temperature conditions.
引用
收藏
页码:539 / 549
页数:11
相关论文
共 29 条
[1]   KINETIC EFFECTS IN THE MECHANICALLY ACTIVATED SOLID-STATE REDUCTION OF HEMATITE [J].
BASSET, D ;
MATTEAZZI, P ;
MIANI, F ;
LECAER, G .
HYPERFINE INTERACTIONS, 1994, 94 (1-4) :2235-2238
[2]   DESIGNING A HIGH-ENERGY BALL-MILL FOR SYNTHESIS OF NANOPHASE MATERIALS IN LARGE QUANTITIES [J].
BASSET, D ;
MATTEAZZI, P ;
MIANI, F .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1993, 168 (02) :149-152
[3]  
Cao G., 1993, CHIMICA IND, V75, P3
[4]  
CHANDRAN S, 1995, CHARTING FUTURE C, V3, P2005
[5]  
Concas G, 1996, Z NATURFORSCH A, V51, P915
[6]  
CORRIAS A, 1997, UNPUB J MAT RES
[7]  
Danon J., 1968, CHEM APPL MOSSBAUER, P159
[8]   DETERMINATION OF A CATION DISTRIBUTION MODEL OF SPINEL SYSTEM FE3-XALXO4 [J].
DEHE, G ;
SEIDEL, B ;
MELZER, K ;
MICHALK, C .
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH, 1975, 31 (02) :439-447
[9]   EFFECTS OF ANNEALING ENVIRONMENT ON SURFACE CHEMICAL-PHASES OF IRON-IMPLANTED SINTERED ALUMINA [J].
DONNET, C ;
MAREST, G ;
MONCOFFRE, N ;
TOUSSET, J .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1991, 59 :1177-1182
[10]   MOSSBAUER STUDIES OF FEAL2O4 AND FEIN2S4 SPIN-GLASS SPINELS [J].
DORMANN, JL ;
SEQQAT, M ;
FIORANI, D ;
NOGUES, M ;
SOUBEYROUX, JL ;
BHARGAVA, SC ;
RENAUDIN, P .
HYPERFINE INTERACTIONS, 1990, 54 (1-4) :503-507