Modification of porous stainless steel hollow fibers by adding TiO sub(2), ZrO sub(2) and SiO sub(2) nano-particles

Using 316L stainless steel powder (SSP) with a nominal particle size of 25 mu m, porous stainless steel hollow fibers (SSHFs) have been prepared via dry-wet spinning of a particle-loaded casting solution based on non-solvent induced phase inversion, followed by temperature programming sintering. The...

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Bibliographic Details
Published in:Journal of porous materials 2016-06, Vol.23 (3), p.773-782
Main Authors: Wang, Ming, Zhong, Qi-feng, Xu, Zhen-Liang, Ma, Xiao-hua
Format: Article
Language:English
Subjects:
Austenitic stainless steels
Fibers
Heat resistant steels
Morphology
Nanostructure
Porosity
Silicon dioxide
Stainless steels
Titanium dioxide
Zirconium dioxide
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Summary:Using 316L stainless steel powder (SSP) with a nominal particle size of 25 mu m, porous stainless steel hollow fibers (SSHFs) have been prepared via dry-wet spinning of a particle-loaded casting solution based on non-solvent induced phase inversion, followed by temperature programming sintering. The morphology and performances were characterized by the maximum/mean pore size, SEM, porosity, density, shrinkage, pure water flux and mechanical strength. Subsequently, SSHFs were modified by adding TiO sub(2), ZrO sub(2) and SiO sub(2) nano-particles for the first time. The morphology of SSHFs relied on not only the SSP contents, but also the contents of TiO sub(2), ZrO sub(2) and SiO sub(2) nano-particles. The corresponding results demonstrated that SSHFs with TiO sub(2) nano-particles possessed excellent properties, especially for mechanical strength having a more than 100 % increase and a maximum pore size of 4.5 mu m. What's more, nano-particles also reduced the defects of SSHFs' structure, which could be observed from SEM images.
ISSN:1380-2224
1573-4854
DOI:10.1007/s10934-016-0132-0