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Characteristics and Sintering Behavior of Oxide Coated Iron Nanopowder Synthesized by Plasma Arc Discharge Process

Title
Characteristics and Sintering Behavior of Oxide Coated Iron Nanopowder Synthesized by Plasma Arc Discharge Process
Author
이재성
Keywords
plasma arc discharge; iron nanopowder; surface oxidation; sintering; densification
Issue Date
2005-06
Publisher
JAPAN INST METALS
Citation
MATERIALS TRANSACTIONS, v. 46, No. 6, Page. 1436-1439
Abstract
This paper investigates the effect of the surface oxide layer of Fe nanopowder synthesised by plasma are discharge (PAD) process on the densification process in hydrogen atmosphere. The densification process was divided into two steps rapid densification at low and densification retarding at high temperature. The reduction process of the oxide layer was quantitatively analyzed, and it was observed that the reduction process dominantly affected the initial densification process at lower temperature. The volume shrinkage due to the reduction of the oxide layer corresponded to 75% of the initial volume shrinkage at low sintering temperature. The volume shrinkage of the reduced oxide layer and the densification rate were discussed in terms of microstructural evolution.
URI
https://www.jstage.jst.go.jp/article/matertrans/46/6/46_6_1436/_article/-char/ja/https://repository.hanyang.ac.kr/handle/20.500.11754/111058
ISSN
1345-9678; 1347-5320
DOI
10.2320/matertrans.46.1436
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
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