Spark plasma sintering of B4C ceramics: The effects of milling medium and TiB2 addition |
| |
| Authors: | Changming Xu Yanbing CaiKatarina Flodström Zheshen LiSaeid Esmaeilzadeh Guo-Jun Zhang |
| |
| Affiliation: | a State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 200050, Shanghai, P. R. Chinab Department of Inorganic Chemistry, Arrhenius Laboratory, Stockholm University, SE-10691 Stockholm, Swedenc Diamorph AB, Roslagstullsbacken 11, SE-10691 Stockholm, Swedend ISA, University of Aarhus, Ny Munkegade, DK-8000 Aarhus C, Denmark |
| |
| Abstract: | Boron carbide (B4C) ceramics, with a relative density up to 98.4% and limited grain growth, were prepared at 1600-1800 °C by spark plasma sintering (SPS) technique. The effects of powder milling medium (water and 2-propanol) on the powders' surface characteristics and TiB2 addition on the sintering densification were investigated. The ball milling processing of B4C powders in water can promote the sintering of B4C ceramics. A B2O3 layer on B4C particle surface is concluded to promote the densification of the B4C ceramics at an early sintering stage. This B2O3 layer, which normally inhibits the densification process at the final stage of the sintering, can be reduced through reaction with TiB2 particles, resulting in further densification of the B4C ceramics. |
| |
| Keywords: | B4C ceramics Spark plasma sintering Milling medium B2O3 |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
