Forming textured microstructures via the gelcasting technique
Forming textured microstructures via the gelcasting technique
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通过凝胶注模技术形成纹理微结构
DOI：
10.1111/j.1151-2916.1997.tb03184.x
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发表时间：
2005
影响因子：
3.9
通讯作者：
E. Fuller
中科院分区：
文献类型：
--
作者：
M. H. Zimmerman;K. Faber;E. Fuller
采用凝胶注模成型法在强磁场作用下制备了具有晶体织构的钛酸铁样品。通过测量相对于施加场以不同方向铸造的样品上的X射线极图来评估纹理。在这项研究中的标本表现出纤维型纹理，与b轴平行的应用领域。当在3.2和8.4 T磁场中处理时，峰值纹理强度分别为随机分布（MRD）的3倍和48倍。这项研究表明，凝胶注模成型与磁场辅助处理的结合提供了一种方便的方法来制备样品，该样品可用于研究晶体织构对多晶陶瓷物理性能的作用，例如，它们的弹性或断裂行为。
Crystallographically textured samples of iron titanate were produced by gelcasting in the presence of a strong magnetic field. Texture was assessed by measuring X-ray pole figures on samples that were cast in different orientations relative to the applied field. Specimens in this study exhibit fiber-type texture, with the b-axes aligned parallel to the applied field. Peak texture strengths were on the order of 3 and 48 multiples of a random distribution (MRD) when processed in a 3.2 and 8.4 T magnetic field, respectively. This study shows that a combination of gelcasting with magnetic-field-assisted processing provides a convenient method for fabricating samples which can be used to study the role of crystallographic texture on the physical properties of polycrystalline ceramics, e.g., their elastic or fracture behavior.