Microstructural evolution and competitive reaction behavior of Ti-B4C system under solid-state sintering

Lei Jia; Xinsheng Wang; Biao Chen; Hisashi Imai; Shufeng Li; Zhenlin Lu; Katsuyoshi Kondoh

doi:10.1016/j.jallcom.2016.06.280

Microstructural evolution and competitive reaction behavior of Ti-B₄C system under solid-state sintering

Lei Jia
, Xinsheng Wang
, Biao Chen
, Hisashi Imai
, Shufeng Li
, Zhenlin Lu
, Katsuyoshi Kondoh

Research output: Contribution to journal › Article › peer-review

44 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	1004-1011
Number of pages	8
Journal	Journal of Alloys and Compounds
Volume	687
DOIs	https://doi.org/10.1016/j.jallcom.2016.06.280
State	Published - 2016
Externally published	Yes

Keywords

Diffusion
Metal-matrix composites
Microstructure
Powder metallurgy
Surface and interface

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10.1016/j.jallcom.2016.06.280

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@article{39a54b640dce43a286c36b8efa2e4bdc,

title = "Microstructural evolution and competitive reaction behavior of Ti-B4C system under solid-state sintering",

abstract = "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.",

keywords = "Diffusion, Metal-matrix composites, Microstructure, Powder metallurgy, Surface and interface",

author = "Lei Jia and Xinsheng Wang and Biao Chen and Hisashi Imai and Shufeng Li and Zhenlin Lu and Katsuyoshi Kondoh",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2016",

doi = "10.1016/j.jallcom.2016.06.280",

language = "英语",

volume = "687",

pages = "1004--1011",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

}

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

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 -

Microstructural evolution and competitive reaction behavior of Ti-B₄C system under solid-state sintering

Abstract

Keywords

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