Effect of FeAl3 on properties of (W,Ti)C-FeAl3 hard materials consolidated by a pulsed current activated sintering method

Title
Effect of FeAl3 on properties of (W,Ti)C-FeAl3 hard materials consolidated by a pulsed current activated sintering method
Authors
손인진나권일고인용도정만윤진국
Keywords
Sintering; Hardness; Fracture toughness; Nanomaterials
Issue Date
2012-08
Publisher
Ceramics international
Citation
VOL 38, NO 6, 5133-5138
Abstract
Using a pulsed current activated sintering (PCAS) method, the densification of (W,Ti)C and (W,Ti)C–FeAl3 hard materials was accomplished within 3 min. The advantage of this process is not only rapid densification to near theoretical density, but also prevention of grain growth in nano-structured materials. Highly dense (W,Ti)C and (W,Ti)C–FeAl3 with a relative density up to 99% were obtained within 3 min by PCAS under a pressure of 80 MPa. The average grain size of the (W,Ti)C was less than 100 nm. Hardness and fracture toughness of the dense (W,Ti)C and (W,Ti)C–FeAl3 produced by PCAS were also investigated. The fracture toughness and hardness values of (W,Ti)C, (W,Ti)C–5 vol.% FeAl3, and (W,Ti)C–10 vol.% FeAl3 consolidated by PCAS were 7.5 MPa m1/2 and 2650 kg/mm2, 10.5 MPa m1/2 and 2480 kg/mm2, 11 MPa m1/2 and 2300 kg/mm2, respectively.
URI
http://pubs.kist.re.kr/handle/201004/42396
ISSN
02728842
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KIST Publication > Article
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