Small angle neutron scattering study of pore microstructure in ceria compacts

Pramana

Srirupa T Mukherjee²  A K Tyagi²  A K Patra1¹  P U Sastry¹  Vinila Bedekar² 

[1] Solid State Physics Division; Bhabha Atomic Research Centre, Mumbai 400 085, India$$;Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India$$

关键词: Ceria;    sintering;    pores;    fractal;    neutron scattering.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Ceria powders were prepared by gel combustion process using cerium nitrate and hitherto unexplored amino acids such as aspartic acid, arginine and valine as fuels. The powders have been characterized by X-ray and laser diffraction. Cold pressed compacts of these powders have been sintered at 1250°C for 2 h. Internal pore microstructure of the sintered compacts has been investigated by small angle neutron scattering (SANS) over a scattering wave vector 𝑞 range of 0.003–0.17 nm-1. The SANS profiles indicate surface fractal morphology of the pore space with fractal dimensionality lying between 2.70 and 2.76.

【 授权许可】

Unknown