Spark plasma sintering of LaB6-(Ti, Zr)B2 composites

作者：Wang, X.; Zhang, J. X.; Yang, X. Y.^*; Hu, K.; Zhang, J. W.

来源：Advances in Applied Ceramics, 2017, 116(3): 132-137.

DOI：10.1080/17436753.2016.1264139

• LaB6-(Ti, Zr)B-2 composite
• spark plasma sintering
• microstructure
• mechanical property

The LaB6-(Ti-,Ti- Zr)B-2 composite was fabricated from LaB6, TiB2 and ZrB2 powders by spark plasma sintering (SPS) at 1600-1900 degrees C holding for 5min under 40MPa. The densification behaviour, microstructure, mechanical properties were investigated. The complete solid solution phase of (Ti, Zr)B-2 was identified. The morphologies of LaB6 and (Ti, Zr)B-2 grains were equiaxed and elongated, respectively. The highest relative density of 98.43% and Vickers hardness of 19.56GPa were obtained at 1900 degrees C. The fracture toughness of 4.43MPam(1/2) was obtained at 1800 degrees C.

• 出版日期2017
• 单位合肥工业大学