%0 Journal Article
%T Influence of Hydrothermal Treatment and Urea Modification on the Microstructure of Gibbsite<br>水热处理和尿素改性对三水铝石微观结构的影响
%A WANG Jing XU Bing FU Gaofeng SHI Jun YUAN Qi Liaoning Key Laboratory for Fabrication
%A Application of Super-fine Inorganic Powers
%A Dalian Jiaotong University
%A Dalian School of Materials
%A Metallurgy
%A Northeastern University
%A Shenyang
%A <br>王晶
%A 徐冰
%A 付高峰
%A 时军
%A 袁琦
%J 材料研究学报
%D 2010
%I 
%X Gibbsite was modified by using urea as modifying agent via a hydrothermal method. Effects of the amount of urea and hydrothermal times on the microstructures were investigated. The results show that the slice-like boehmite microstructure can be obtained at 140  for 24 h when the molar ratio of urea to gibbsite is less than 6 : 1, while the global ammonium aluminum carbonate hydroxide (AACH) microstructure can be prepared at 140  for 24 h when the molar ratio was more than 8 : 1. The formation of AACH depends on the hydrothermal times. Aluminum hydroxide turned from gibbsite to the mixture of boehmite and AACH. Finally, AACH is synthesized. The morphology of aluminum hydroxide transformed from the block to the slice, and the global AACH  trchitectures assembled by the lathes were obtained finally.
%K inorganic non-metallic materials
%K 
%K microstructure
%K hydrothermal
%K gibbsite
%K ammonium aluminum carbonate hydroxide<br>无机非金属材料
%K 
%K 微观结构
%K 水热
%K 三水铝石
%K 
%K 碱式碳酸铝铵
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=C101C4C04993B4D94FCD8446E6CBEB3B&aid=29258D3667285628C3588FC7DE4C3D1C&yid=140ECF96957D60B2&vid=B91E8C6D6FE990DB&iid=CA4FD0336C81A37A&sid=228A710F49B6CE58&eid=E203FB1A272C9DD2&journal_id=1005-3093&journal_name=材料研究学报&referenced_num=0&reference_num=0