Ball milling of Fe-75-C-25: Formation of Fe3C and Fe7C3

被引：56

作者：

Campbell, SJ

Wang, GM

Calka, A

Kaczmarek, WA

机构：

[1] UNIV WOLLONGONG,DEPT MAT ENGN,WOLLONGONG,NSW 2522,AUSTRALIA

[2] AUSTRALIAN NATL UNIV,RSPHYSSE,DEPT MATH APPL,CANBERRA,ACT 0200,AUSTRALIA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1997年 / 226卷

关键词：

ball milling; carburization; amorphization and iron carbides;

D O I：

10.1016/S0921-5093(97)80027-5

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Powder mixtures of Fe-75-C-25 (both graphite and activated carbon) have been ball-milled in vacuum for periods of up to 285 h. X-ray diffraction, Mossbauer spectroscopy and thermal analysis measurements indicate that an amorphous Fe3C-type phase is produced on short-term milling (less than 70 h), with a crystalline Fe3C being obtained on further milling to 140 h. This Fe3C-type phase was found to undergo partial carbon oxidation between 500 and 1000 degrees C during thermogravimetric measurement, indicating the metastable state of this phase. The carbon-rich Fe7C3 phase was observed on extended milling of Fe75C25 (graphite) to 285 h, in agreement with earlier findings. (C) 1997 Elsevier Science S.A.

引用

页码：75 / 79

页数：5

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