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Tuning microstructures and separation behaviors of pure silicon carbide membranes
- Source :
- Ceramics International. 45:18788-18794
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- This study reports the preparation of silicon carbide ceramic membranes with pure silicon carbide particles without sintering aids. The effects of sintering temperature on the microstructure, mechanical and filtration properties were investigated. The porosity of the substrate layer increased from 37% to 41% when the sintering temperature ranged from 2150 to 2300 °C, whereas the flexural strength increased from 14.5 to 18.2 MPa. The separation layer was coated on the substrate layer using a spray process. When sintered at 1850 °C, a smooth and defect-free layer was formed with an average pore size and layer thickness of 1.2 and 60 μm, respectively. With the increase of average pore size, the filtration flux increased from 2650 to 2800 L/(m2 h bar). Such ceramic membranes can be used to separate corrosive wastewater and high-temperature wastewaters owing to the exclusion of sintering aids, unlike the conventional ceramic membranes.
- Subjects :
- Materials science
Sintering
02 engineering and technology
Substrate (electronics)
01 natural sciences
law.invention
chemistry.chemical_compound
law
0103 physical sciences
Materials Chemistry
Silicon carbide
Ceramic
Composite material
Filtration
010302 applied physics
Process Chemistry and Technology
021001 nanoscience & nanotechnology
Microstructure
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Membrane
chemistry
visual_art
Ceramics and Composites
visual_art.visual_art_medium
0210 nano-technology
Layer (electronics)
Subjects
Details
- ISSN :
- 02728842
- Volume :
- 45
- Database :
- OpenAIRE
- Journal :
- Ceramics International
- Accession number :
- edsair.doi...........2c18abb053f1d29c984c10321841147f