Pulsed current activated synthesis and consolidation of nanostructured Ti-TiC composite and its mechanical properties

Title
Pulsed current activated synthesis and consolidation of nanostructured Ti-TiC composite and its mechanical properties
Authors
홍경태윤진국김동기박나라김병수손인진
Keywords
Synthesis; Composite materials; Nanomaterials; Mechanical properties; Sintering
Issue Date
2016-02
Publisher
Journal of nanoscience and nanotechnology
Citation
VOL 16, NO 2-1901
Abstract
Ti and CNT powders were milled by high energy ball milling. The milled powders were then simultaneously synthesized and consolidated using pulsed current activated sintering (PCAS) within one minute under the applied pressure of 80 MPa. The advantage of this process is not only rapid densification to near theoretical density but also to prevent grain growth in nano -structured materials The milling did not induce any reaction between the constituent powders. Meanwhile, PCAS of the Ti-CNT mixture produced a Ti-TiC composite according to the reaction (Ti+0.06CNT s 0.94Ti + 0.06TiC, Ti + 0.12CNT -> 0,88Ti + 0,12TiC). Highly dense nanocrystalline Ti-TiC composites with a relative density of up to 99.5% were obtained within one minute. The hardness and fracture toughness of the dense Ti-6mole% TiC and Ti-12 mole% TiC produced by PCAS were also investigated.
URI
http://pubs.kist.re.kr/handle/201004/64777
ISSN
1533-4880
Appears in Collections:
KIST Publication > Article
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