Research on Morphology and Growth Mechanism of Xonotlite Crystal

2017 2nd International Conference on Advanced Materials Research and Manufacturing Technologies

材料科学;机械制造

Liu, F.^1,2,3 ; Chen, S.^1,3 ; Lin, Q.^1,2 ; Wang, X.D.^2 ; Cao, J.X.^1,2,3

School of Chemistry and Chemical Engineering, Guizhou University, Guiyang, Guizhou

550025, China^1

Key Laboratory of Green Chemical and Clean Energy Technology, Guiyang, Guizhou

550025, China^2

Key Laboratory of Efficient Utilization of Mineral and Green Chemical Technology, Guiyang, Guizhou

550025, China^3

关键词: Crystalline phase;    Crystalline phasis;    Dissolution precipitations;    Growth mechanisms;    Molar ratio;    Siliceous materials;    Situ transformation;    Spherical particle;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/229/1/012013/pdf
DOI  :  10.1088/1757-899X/229/1/012013

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The xonotlite crystals were synthesized via the hydrothermal synthesis manner from CaO and SiO2as the raw materials with their Si/Ca molar ratio of 1.0. The morphologies and their growth mechanisms of xonotlite crystal were explored by taking the various siliceous sources into account in this paper. These products were characterized by XRD and SEM techniques to investigate their crystalline phase and morphology. The results indicated that siliceous material had little influence on the crystalline phases of xonotlite crystals but posed a great impact on their morphologies. Based on the various morphologies characteristics of the products, the growth mechanism for the morphologies of spherical particles and fibers were further revealed according with the in situ transformation mechanism and dissolution-precipitation mechanism respectively.