Effect of carbon on the nitridation behavior of aluminum powder

Title
Effect of carbon on the nitridation behavior of aluminum powder
Authors
안재평이건배김용환최현주
Keywords
nitridation; Al; powder; EELS
Issue Date
2016-12
Publisher
Journal of alloys and compounds
Citation
VOL 689-224
Abstract
The effect of carbon on Al powder nitridation was investigated from an atomic-scale chemical and crystallographic viewpoint. Carbon delays the initiation of nitridation and melting of Al powder, possibly because of its insulation effect. Therefore, carbon provides a pathway through which a constant supply of nitrogen gas is provided before molten Al powder is fully consolidated. Carbon also alters the nitridation mechanism by acting as a reaction agent of aluminum oxides and providing the path for nitrogen gas for constant nitridation, thereby stimulating the formation of the AlN with a typical triplet band structure. As a result, when carbon covers the entire surface of the powder, about 85% nitridation can be achieved.
URI
http://pubs.kist.re.kr/handle/201004/66953
ISSN
0925-8388
Appears in Collections:
KIST Publication > Article
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