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Thermodynamic and kinetic study on interfacial reaction and diamond graphitization of Cu Fe-based diamond composite

Thermodynamic and kinetic study on interfacial reaction and diamond graphitization of Cu Fe-based diamond composite
Thermodynamic and kinetic study on interfacial reaction and diamond graphitization of Cu Fe-based diamond composite
Cu–Fe based diamond composites used for saw-blade segments are directly fabricated by vacuum and pressure assisted sintering. The carbide forming elements Cr and Ti are added to improve interfacial bonding between diamond and the Cu–Fe matrix. The interfacial reactions between diamond/graphite and Cr or Ti, and diamond graphitization are investigated by thermodynamics/kinetics analyses and experimental methods. The results show that interfacial reactions and graphitization of diamond can automatically proceed thermodynamically. The Cr3C2, Cr7C3, Cr23C6, and TiC are formed at the interfaces of composites by reactions between diamond and Cr or Ti; diamond graphitization does not occur because of the kinetic difficulty at 1093 K under the pressure of 13 MPa
1674-1056
18102
Li, W.S.
189f14ed-9e2c-4202-82ba-6d24321b3304
Zhang, J
21de2303-4727-4097-9b0f-ae43d95d052a
Dong, H
fe449ae0-91cc-4dc3-ae0f-3cd84db802cd
Chu, Ke
4ac8da22-ece0-43ca-a9cd-da9493e92550
Wang, Shuncai
8a390e2d-6552-4c7c-a88f-25bf9d6986a6
Liu, Y
18386851-e0b0-4fea-a539-0f0ce7bb0774
Li, Y
1c3d3550-b290-4f32-9200-7753f697b8eb
Li, W.S.
189f14ed-9e2c-4202-82ba-6d24321b3304
Zhang, J
21de2303-4727-4097-9b0f-ae43d95d052a
Dong, H
fe449ae0-91cc-4dc3-ae0f-3cd84db802cd
Chu, Ke
4ac8da22-ece0-43ca-a9cd-da9493e92550
Wang, Shuncai
8a390e2d-6552-4c7c-a88f-25bf9d6986a6
Liu, Y
18386851-e0b0-4fea-a539-0f0ce7bb0774
Li, Y
1c3d3550-b290-4f32-9200-7753f697b8eb

Li, W.S., Zhang, J, Dong, H, Chu, Ke, Wang, Shuncai, Liu, Y and Li, Y (2013) Thermodynamic and kinetic study on interfacial reaction and diamond graphitization of Cu Fe-based diamond composite. Chinese Physics B, 22 (1), 18102. (doi:10.1088/1674-1056/22/1/018102).

Record type: Article

Abstract

Cu–Fe based diamond composites used for saw-blade segments are directly fabricated by vacuum and pressure assisted sintering. The carbide forming elements Cr and Ti are added to improve interfacial bonding between diamond and the Cu–Fe matrix. The interfacial reactions between diamond/graphite and Cr or Ti, and diamond graphitization are investigated by thermodynamics/kinetics analyses and experimental methods. The results show that interfacial reactions and graphitization of diamond can automatically proceed thermodynamically. The Cr3C2, Cr7C3, Cr23C6, and TiC are formed at the interfaces of composites by reactions between diamond and Cr or Ti; diamond graphitization does not occur because of the kinetic difficulty at 1093 K under the pressure of 13 MPa

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Published date: 2013
Organisations: Engineering Science Unit

Identifiers

Local EPrints ID: 357247
URI: http://eprints.soton.ac.uk/id/eprint/357247
ISSN: 1674-1056
PURE UUID: 7d5393e7-c14b-4ca1-8170-912b9bc0a9e3

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Date deposited: 27 Sep 2013 15:21
Last modified: 08 Nov 2018 17:30

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