Structure characteristics and crystallography of LaB6-ZrB2 in-situ composite

Changming Chen, Wancheng Zhou, Litong Zhang

科研成果: 期刊稿件文章同行评审

1 引用 (Scopus)

摘要

LaB6-ZrB2 eutectic in-situ composite was fabricated by use of an electron beam zone heating technique, and orientated ZrB2 fibers in a LaB6 matrix were obtained. The range of diameter of the ZrB2 fibers was ∼ 0.2-1.2 μm, with fiber lengths up to 100 μm. As the solidification rate increases, the interfiber spacing and fiber diameter decrease. Primary plate-like LaB6 dendrites formed upon the solidification of an ingot with hypoeutectic composition. LaB6 was the first phase to nucleate when eutectic growth occurred, and ZrB2 showed non-faceted growth in the hypereutectic. For the ingot solidified with planar growth the orientation relation of the phases was Growth direction: [001]LaB6// [00.1]ZrB2, Interfacial plane: (1̄10)LaB6//(11.0)ZrB2.

源语言英语
页(从-至)74-78
页数5
期刊Progress in Natural Science: Materials International
8
1
出版状态已出版 - 1998

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