1. 毕业设计（论文）的内容和要求

材料的性能和材料的结构有着非常密切的关系。

作为一种胶凝性材料，石膏制品的性能同样和制品内部的晶体形貌、结合方式以及孔结构等都有着密切的联系。

对于石膏基的材料，半水石膏必须经过一个水化的过程才能使得制品产生一定强度。

2. 参考文献

[1] P. Gay. Some crystallographic studies in the systemCaS04-CaS04#183;2 H20. II. The hydrous forms [J]. MineralogicalMagazine, 35, 354-362. [2] G. A. Larger, TH. Armbruster, F. J. Rotella. A crystallographic study of the low-temperature dehydration products of gypsum, CaS04#183;2H20: hemihydrate CaS04 #183; 0.5H20, and γ-CaS04 [J]. American Mineralogist, 1984, 69: 910-918 [3] J. W. Mullin. Crystallization (Fourth edition) [M]. Oxford Boston Johannesburg Melbourne Newdelhi Singapore, 2001. [4] K. Sangwal, I. Owczarek. Effect of impurities on the growth of KDP crystals: mechanism of adsorption on (101) faces [J]. Journal of Crystal Growth, 1990, 102(3): 574-80. [5] Geert Jan Witkamp. Crystallization of calcium sulfate and uptake of impurities [J]. Offsetdrunkkerij Kanters bv, 1989. [6] Hans E. Lundager Madsen. Influence of foreign metal ions on crystal growth and morphology of brushite (CaHPO4, 2H2O) and its transformation to octacalcium phosphate and apatite [J]. Journal of Crystal Growth, 2008, 310: 2602-2612. [7] J. W. Mullin, M. Chakraborty, K. Mehta. Nucleation and growth of ammonium sulphate crystals [J]. Journal of Applied Chemistry, 1970, 20: 367-371. [8] 刘伟华. 无机外加剂对α-半水石膏性能的影响及其作用机理研究[D]. 河北理工大学，2005. [9] N.B. Singh, B. Middendorf. Calcium sulphate hemihydrate hydration leading to gypsum crystallization [J]. Progress in crystal growth and characterization of materials, 53, 2007, 57-77. [10] 李青. 模型石膏的制备、性能及应用研究 [D]. 重庆大学, 2004.

3. 毕业设计（论文）进程安排

2015.12.14～2015.12.26查阅相关文献，翻译英文论文， 2015.12.27~2016.01.15 撰写开题报告，进行实验准备 2016.02.22~2016.06.05 完成实验设计，实验研究 2016.06.06~2016.06.07 分析实验数据，撰写论文，进行答辩