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Fabrication and Formation Mechanism of Flowerlike Bicephalous TiB_2 Nanowhisker Clusters

机译：花状双头TiB_2纳米晶须簇的制备及形成机理

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摘要

Fiowerlike bicephalous titanium diboride (TiB_2) nanowhisker clusters were fabricated by planetary ball-milling. The pure cleavage theory and crack growth mechanism were used to explain the formation process. The high-resolution transmission electron microscopy arid nano electronic beam diffraction show that TiB_2 superhard material always has a cleavage plane along the direction of [0001] zone axe and [1010] zone axe because of its big interplane distance, weak bonding force between planes and low index directions. The flowerlike bicephalous TiB2 nanowhisker can be gained after repeated cleavage under high strains. The discovery could open a new path to fabricate C32 type superhard ceramic nanowhiskers.
机译：通过行星式球磨制备了更强的双头二硼化钛（TiB_2）纳米晶须簇。用纯裂解理论和裂纹扩展机理来解释其形成过程。高分辨率透射电子显微镜和纳米电子束衍射结果表明，TiB_2超硬材料始终具有沿[0001]区域轴和[1010]区域轴方向的劈裂面，这是因为其面间距离大，面与面之间的结合力弱。低索引方向。花状双头TiB2纳米晶须可在高应变下反复裂解后获得。这一发现可能为制造C32型超硬陶瓷纳米晶须开辟一条新途径。

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