Abstract The microstructure evolution of rod-shaped ZrB2 in situ synthesis of ZrB2-SiC composite powder was studied under different heat treatment. TG-DSC, XRD, SEM, EDS, TEM, and HRTEM were used to describe the preparation, phase composition and morphology of rod-shaped ZrB2. As a result, tiny ZrB2 rod grew out of the liquid phase and adopts a layered growth process. As the rod grew in the longitudinal and transverse directions, the surrounding liquid phase was consumed, and the adjacent rods began to grow in parallel or cross grow to form multiple structures.

中文翻译：

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ZrB2-SiC复合粉体原位制备棒状ZrB2的组织演变及生长行为

摘要 研究了原位合成ZrB2-SiC复合粉体在不同热处理条件下棒状ZrB2的微观结构演变。TG-DSC、XRD、SEM、EDS、TEM和HRTEM用于描述棒状ZrB2的制备、相组成和形貌。结果，细小的ZrB2棒从液相中生长出来，采用分层生长过程。随着棒的纵向和横向生长，周围的液相被消耗，相邻的棒开始平行生长或交叉生长，形成多重结构。