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Effect of nickel addition on the exothermic reaction of titanium and boron carbide

Published online by Cambridge University Press:  03 March 2011

Y.F. Yang ,
H.Y. Wang ,
Y.H. Liang ,
R.Y. Zhao  and
Q.C. Jiang
Y.F. Yang
Affiliation:
Key Laboratory of Automobile Materials of Ministry of Education and Department of Materials Science and Engineering, Jilin University, Nanling Campus, Changchun 130025, People’s Republic of China
H.Y. Wang
Affiliation:
Key Laboratory of Automobile Materials of Ministry of Education and Department of Materials Science and Engineering, Jilin University, Nanling Campus, Changchun 130025, People’s Republic of China
Y.H. Liang
Affiliation:
Key Laboratory of Automobile Materials of Ministry of Education and Department of Materials Science and Engineering, Jilin University, Nanling Campus, Changchun 130025, People’s Republic of China
R.Y. Zhao
Affiliation:
Key Laboratory of Automobile Materials of Ministry of Education and Department of Materials Science and Engineering, Jilin University, Nanling Campus, Changchun 130025, People’s Republic of China
Q.C. Jiang*
Affiliation:
Key Laboratory of Automobile Materials of Ministry of Education and Department of Materials Science and Engineering, Jilin University, Nanling Campus, Changchun 130025, People’s Republic of China
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

Exothermic reaction path of the Ni–Ti–B4C system in the differential thermal analysis apparatus proceeded in such a way that Ni initially reacted with B4C and Ti to form Ni–B compounds and Ti2Ni with heat release, respectively; subsequently, the formation of Ni–B eutectic liquid between Ni2B and Ni4B3, and the appearance of Ni–Ti eutectic liquid phase between Ti2Ni and Ti were followed, which enabled the diffusion of Ni, B, C, and Ti in solution to form Ni–Ti–B–C liquid more easily and quickly at a low temperature; finally, TiC and TiB2 were precipitated out of the liquid. The addition of Ni provided an easier route for reactant mass transfer and accelerated the occurrence of complete reaction.

Keywords

Combustion synthesis (DTA)Differential thermal analysis (DTA)Ni
Type
Articles
Information
Journal of Materials Research , Volume 22 , Issue 1 , January 2007 , pp. 169 - 174
Copyright
Copyright © Materials Research Society 2007

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