TY - JOUR
T1 - Microstructural evolution and competitive reaction behavior of Ti-B4C system under solid-state sintering
AU - Jia, Lei
AU - Wang, Xinsheng
AU - Chen, Biao
AU - Imai, Hisashi
AU - Li, Shufeng
AU - Lu, Zhenlin
AU - Kondoh, Katsuyoshi
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016
Y1 - 2016
N2 - By using experimental investigations and theoretical calculations, microstructural evolution and competitive reaction behavior of Ti-B4C system under solid-state sintering is confirmed. Firstly, B4C decomposes into B and C atoms followed by diffusing into Ti side immediately, and TiB whiskers form in Ti matrix. Then, Ti atoms diffuse into B4C via vacancies left by the diffused B and C atoms, leading TiB2and carbon substance to form in B4C side. Subsequently, reaction product carbon diffuses into Ti side and concentration of C in Ti side increases accordingly, resulting in the formation of TiC particles in Ti matrix. With further processing of reaction, both amount and size of products increases gradually. When TiB2phases grow into a monolithic layer, diffusion behavior between Ti and B4C is inhabited, carbon presents to be a loose layer between un-reacted B4C and TiB2, and the in situ reaction also stops finally.
AB - By using experimental investigations and theoretical calculations, microstructural evolution and competitive reaction behavior of Ti-B4C system under solid-state sintering is confirmed. Firstly, B4C decomposes into B and C atoms followed by diffusing into Ti side immediately, and TiB whiskers form in Ti matrix. Then, Ti atoms diffuse into B4C via vacancies left by the diffused B and C atoms, leading TiB2and carbon substance to form in B4C side. Subsequently, reaction product carbon diffuses into Ti side and concentration of C in Ti side increases accordingly, resulting in the formation of TiC particles in Ti matrix. With further processing of reaction, both amount and size of products increases gradually. When TiB2phases grow into a monolithic layer, diffusion behavior between Ti and B4C is inhabited, carbon presents to be a loose layer between un-reacted B4C and TiB2, and the in situ reaction also stops finally.
KW - Diffusion
KW - Metal-matrix composites
KW - Microstructure
KW - Powder metallurgy
KW - Surface and interface
UR - https://www.scopus.com/pages/publications/84978924456
U2 - 10.1016/j.jallcom.2016.06.280
DO - 10.1016/j.jallcom.2016.06.280
M3 - 文章
AN - SCOPUS:84978924456
SN - 0925-8388
VL - 687
SP - 1004
EP - 1011
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -