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An HREM study of domain structures and grain boundaries in Ca4Al6SO16

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Abstract

Several different kinds of domain structures formed during phase transformation have been observed by means of high-resolution electron microscopy (HREM) in Ca4Al6S016. They are 〈110〉 90 ° and 120 ° orientation variants and 〈1 1 0〉 translation variants found in the superstructure. These orientation variants are related to the lost symmetries of matrix and the number of them can be predicted according to the Van Tendeloo's conclusion. In addition to these domain structures, the 〈1 1 0〉 180 ° rotation domain with the characteristic feature of non-stoichiometry and {1 1 0} general domain have also been revealed in the matrix. The {1 1 0} and {2 1 1} small angle grain boundaries were studied as well.

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Authors and Affiliations

  1. Laboratory of Atomic Imaging of Solids, Institute of Metal Research, Academia Sinica, 110015, Shenyang, Peoples Republic of China

    Y. G. Wang, H. Q. Ye, K. H. Kuo, X. J. Feng, G. L. Lao & S. Z. Long

  2. Wuhan University of Technology, Luoshi Road 14, Wuhan, Peoples Republic of China

    X. J. Feng, G. L. Lao & S. Z. Long

Authors
  1. Y. G. Wang
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  2. H. Q. Ye
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  3. K. H. Kuo
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  4. X. J. Feng
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  5. G. L. Lao
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  6. S. Z. Long
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Wang, Y.G., Ye, H.Q., Kuo, K.H. et al. An HREM study of domain structures and grain boundaries in Ca4Al6SO16 . J Mater Sci 26, 814–820 (1991). https://doi.org/10.1007/BF00588321

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  • DOI: https://doi.org/10.1007/BF00588321

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