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Novel Synthesis Method and Characterization of Porous Calcium Hexa‐Aluminate Ceramics
Author(s) -
Liu Xueyin,
Yang Dexin,
Huang Zhaohui,
Yi Shuai,
Ding Hao,
Fang Minghao,
Zhang Shaowei,
Liu Yangai
Publication year - 2014
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.13141
Subject(s) - aluminate , porosimetry , scanning electron microscope , porosity , materials science , chemical engineering , mineralogy , molten salt , ceramic , calcium , hexa , nuclear chemistry , chemistry , crystallography , porous medium , metallurgy , composite material , cement , engineering
Porous calcium hexa‐aluminate ( CA 6 ) ceramics were in‐situ synthesized by heated CaCO 3 and α‐ Al 2 O 3 in a NaCl ‐based salt at 1400°C for 3 h, and then characterized by X ‐ray diffraction ( XRD ), scanning electron microscopy, ( SEM ) and mercury porosimetry. The size and morphology of the CA 6 crystals and pores were gradually changed with the increase of NaCl addition in the raw material, indicating that the molten salt not only provided a liquid environment for synthesis of CA 6 , but also generated considerable pores.