【摘 要】
:
The formation process of crystal polymorphs of titania under hydrothermal condition is studied.According to the experimental results and theoretic analysis,the
【机 构】
:
Shanghai Institute of Ceramics
论文部分内容阅读
The formation process of crystal polymorphs of titania under hydrothermal condition is studied.According to the experimental results and theoretic analysis,the formation process of crystal polymorphs can be described as a unit process.It includes the formation of growth units,the formation of nuclei through the polymerization of growth unit,and the growth of crystallites.The influence of the environmental phase and growth conditions on the formation of polymorphs is reflected in the changes of the structures of growth units.For example,when changing the pH of the reaction medium,the structure of growth unit with the highest stable energy in the hydrothermal system changes.Then different titania polymorphs can be prepared.The absorption,movement,crystallization or desorption of the growth unit are related to crystalline structure.On the other hand,the formation of crystal inner defects is related to the disturbance of the crystallizing process.``
其他文献
报告了对电子束刻蚀的亚微米矩形阵列坡莫合金NiFe薄膜系统的铁磁共振(FMR)研究及对矩形阵列不均匀退磁场和铁磁共振谱进行的理论拟合.计算出样品的有效磁化强度M,回旋磁比γ
As-rolled microstructure and mechanical properties of a new kind of grain boundary allotriomorphic ferrite/granular bainite duplex steel plate and its crack pro
A modified selectively-infective phage (SIP) is developed to facilitate the selection of interacting antibody-antigen pairs from a large single-chain antibody (
将混沌对初始条件的敏感特性应用到测量领域中,提出了一种基于符号序列的通用编码方法,并给出了符号序列同初始条件之间的数学关系;讨论了基于混沌的测量系统的一些特性.理论
A novel finite volume method is presented to investigate the effect of anisotropic conductivity on the potential distribution of the scalp. The second-order int
The vertical floating catalyst method is first used to produce single-walled carbon nanotubes (SWNTs)continuously on a large scale by a newly developed techniqu
在经典的边生产边需求,允许一定量缺货的EOQ模型基础上,建立考虑部分短缺量拖后情况下的EOQ模型,并结合某电子企业进行实例分析.
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7
Aiming at concrete tasks of information fusion in computer pan-vision (CPV) system, information fusion methods are studied thoroughly. Some research progresses
A new resistless etching method has been developed for Silicon wafers. This new method uses an aqueous solution consisting of hydrogen peroxide (H2O2) and hydro