摘要
采用铝型材厂工业废渣,滑石粉和粘土为主要原料合成堇青石材料,用XRD和SEM法表征各样品的晶相结构和显微结构;用Rietveld Quantification内标半定量法确定各晶相的含量;用Philips X'pert plus软件确定各晶相的晶胞参数。实验结果表明:除晶胞参数发生微小变化外,合成的堇青石结构与单晶相同,属六方晶系,p6/mcc空间群;除堇青石相外,体系内还出现莫来石固溶体相和镁铝尖晶石相,他们的含量和晶胞参数也相应的进行了表征。
Cordierite was synthesized from three main starting materials： the waste slag of an aluminum factory, talc powder and clay. X-ray diffraction （XRD） and scanning electron microscopy （SEM） were used to characterize the crystal structure and microstructures. The amount of each crystal phase was calculated by Rietveld Quantification. The parameters of the unit cell for each crystal phase were determined using Philips X＇pert plus software. The results show that the synthesized cordierite possesses the same hexagonal structure as pure cordierite （space group P6/mcc） with only a slight variation of lattice parameters. The results also reveal the existence of some mullite solid solution and Mg-Al spinel in the sample. The maximum amount of cordierite（86%） was obtained through the recipe corresponding to sample No.3, in which the optimum amount for talc powder, clay, waste slag and quartz are 22.0%, 24.0%,48.0% and 6.0% respectively. The crystal structures for all the byproducts are conventional except for slightly distorted lattice parameters and volume.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2007年第5期1091-1095,共5页
Journal of Synthetic Crystals
基金
Nation High Technology Research and Development Program(863)
关键词
合成
铝废渣
堇青石
晶相结构
synthesis
aluminum waste slag
cordierite
crystalline phases
