Microstructure of ZrB2–ZrN directionally solidified eutectic composite by arc-melting

Journal of Asian Ceramic Societies

Eric Jianfeng Cheng¹  Takashi Goto¹  Hirokazu Katsui¹ 

[1] Tohoku University;

关键词: zirconium diboride;    zirconium nitride;    eutectic;    unidirectional solidification;    microstructure;   

DOI  :  10.1080/21870764.2018.1446467

来源: DOAJ

【 摘 要 】

A ZrB2–ZrN eutectic composite was prepared by arc-melting a mixture of ZrB2 and ZrN powders under a N2 atmosphere. The eutectic composition was 48ZrB2–52ZrN (mol%), resulting in a rod-like microstructure comprising hexagonally faceted ZrN single-crystal rods dispersed in a ZrB2 single-crystal matrix. The crystal orientation relationship between the ZrB2 matrix and the ZrN rod was ZrB2 $$\left\{ {11\bar 20} \right\}$$//ZrN{101} and ZrB2 <0001>//ZrN <111>. The rod-like eutectic composite had a Vickers hardness of 16.2 GPa.

【 授权许可】

Unknown