TY - JOUR
T1 - Low-temperature sintering of a porous SiC ceramic filter using water glass and zirconia as sintering aids
AU - Jiang, Qian
AU - Xie, Yuling
AU - Ji, Lingqian
AU - Zhong, Zhaoxiang
AU - Xing, Weihong
N1 - Publisher Copyright:
© 2021 Elsevier Ltd and Techna Group S.r.l.
PY - 2021/9/15
Y1 - 2021/9/15
N2 - The fabrication of porous silicon carbide (SiC) ceramics prepared by existing reaction bonding technology requires high-temperature sintering beyond 1400 °C. We used low-cost industrial grade water glass and zirconia as sintering aids to prepare porous SiC ceramic filters to reduce the sintering temperature while improving the commerciality. Additionally, we investigated the effects of different sintering temperatures and the addition of water glass on the samples. Loading water glass and zirconia reduced the sintering temperature to 600 °C. The additive-loaded ceramic filter sintered at 600 °C exhibited an average pore size of 0.58 μm, a porosity of 47.4%, a bending strength reaching 56 MPa, a pure water permeance exceeding 4800 L m−2h−1bar−1, and good acid corrosion resistance. In addition, the SiC filter prepared at 1000 °C showed good chemical resistance and an average pore size of 0.75 μm as well as mechanical strength and pure water permeance of over 80 MPa and 6294 L m−2h−1bar−1, respectively. The low-cost, high-performance porous SiC ceramic filter exhibits broad commercial application prospects in water treatment.
AB - The fabrication of porous silicon carbide (SiC) ceramics prepared by existing reaction bonding technology requires high-temperature sintering beyond 1400 °C. We used low-cost industrial grade water glass and zirconia as sintering aids to prepare porous SiC ceramic filters to reduce the sintering temperature while improving the commerciality. Additionally, we investigated the effects of different sintering temperatures and the addition of water glass on the samples. Loading water glass and zirconia reduced the sintering temperature to 600 °C. The additive-loaded ceramic filter sintered at 600 °C exhibited an average pore size of 0.58 μm, a porosity of 47.4%, a bending strength reaching 56 MPa, a pure water permeance exceeding 4800 L m−2h−1bar−1, and good acid corrosion resistance. In addition, the SiC filter prepared at 1000 °C showed good chemical resistance and an average pore size of 0.75 μm as well as mechanical strength and pure water permeance of over 80 MPa and 6294 L m−2h−1bar−1, respectively. The low-cost, high-performance porous SiC ceramic filter exhibits broad commercial application prospects in water treatment.
KW - Low cost
KW - Low-temperature sintering
KW - Porous SiC ceramic Filters
UR - http://www.scopus.com/inward/record.url?scp=85110471601&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2021.06.020
DO - 10.1016/j.ceramint.2021.06.020
M3 - 文章
AN - SCOPUS:85110471601
SN - 0272-8842
VL - 47
SP - 26125
EP - 26133
JO - Ceramics International
JF - Ceramics International
IS - 18
ER -
