3D MET Characterization of Precipitated and Fumed Silicas:Focus on Statistical Size Distributions
The optimization of VIP core for durable performance is still a challenging topic.A characterization bottleneck needs however to be passed: can we get true 3D imaging of the raw nanostructured material at the micro and mesoscopic scale.A specific protocol was successfully built,so as to allow electronic transmission tomography (AET) of raw nanostructured silica,with a pixel size of less than 0.2nm.Statistical size distribution analysis were then performed focused on: (i) secondary silica particle (ii) silica aggregates (iii) pore thickness.Fumed and precipitated silica,aged or not,are characterized by very specific and different aggregate architecture.Such silica morphologies explained differences in functional properties,and ageing and open opportunities to tune new microstructure.
nanostructured silica characterization 3D TEM statistical analysis pore particle
Genevieve Foray Lucian Roiban Emmanuelle Pons Bernard Yrieix
MATEIS, INSA Lyon, UCBL, CNRS, Université de Lyon, 7 av.Jean Capelle F-69621 Villeurbanne, France MATEIS, INSA Lyon, UCBL, CNRS, Université de Lyon, 7 av.Jean Capelle F-69621 Villeurbanne, France;ED
国际会议
The 12th International Vacuum Insulation Symposium (IVIS 2015)(第十二届国际真空绝热材料会议)
南京
英文
45-48
2015-09-01（万方平台首次上网日期，不代表论文的发表时间）