TY - JOUR
T1 - Fabrication of Si2N2O ceramic with silicon kerf waste as raw material
AU - Li, Yanjun
AU - Liu, Donghua
AU - Ge, Bangzhi
AU - Shi, Zhongqi
AU - Jin, Zhihao
N1 - Publisher Copyright:
© 2017 Elsevier Ltd and Techna Group S.r.l.
PY - 2018/4/1
Y1 - 2018/4/1
N2 - SiC and Si in silicon kerf waste of photo-voltaic (PV) industry produced by a slurry technology are difficult to be separated for recycling due to their similar density and particle sizes. In this work, silicon kerf waste after removing the glycol and metal was characterized, then used as raw material for producing Si2N2O ceramics. In the silicon kerf waste, besides SiC and Si, amorphous SiO2 exist because of the reaction of Si with water during the storage time. Thermodynamic calculation showed that, ascribing to the reaction of Si, N2 with SiO2 and the reaction of SiC, N2 with SiO2 at high temperature in N2 atmosphere, the Si was exhausted and the SiC was decreased to form the Si2N2O. With the content of sintering additives increasing, the porosity of the samples was decreased, the bulk density was increased, and the strength of the samples was increased. It would be a reasonable method for fully utilizing the silicon kerf waste to fabricate Si2N2O composite ceramic without separating the SiC and Si.
AB - SiC and Si in silicon kerf waste of photo-voltaic (PV) industry produced by a slurry technology are difficult to be separated for recycling due to their similar density and particle sizes. In this work, silicon kerf waste after removing the glycol and metal was characterized, then used as raw material for producing Si2N2O ceramics. In the silicon kerf waste, besides SiC and Si, amorphous SiO2 exist because of the reaction of Si with water during the storage time. Thermodynamic calculation showed that, ascribing to the reaction of Si, N2 with SiO2 and the reaction of SiC, N2 with SiO2 at high temperature in N2 atmosphere, the Si was exhausted and the SiC was decreased to form the Si2N2O. With the content of sintering additives increasing, the porosity of the samples was decreased, the bulk density was increased, and the strength of the samples was increased. It would be a reasonable method for fully utilizing the silicon kerf waste to fabricate Si2N2O composite ceramic without separating the SiC and Si.
KW - Fabricating
KW - Recycling
KW - SiNO
KW - Silicon kerf waste
UR - https://www.scopus.com/pages/publications/85039704672
U2 - 10.1016/j.ceramint.2017.12.203
DO - 10.1016/j.ceramint.2017.12.203
M3 - 文章
AN - SCOPUS:85039704672
SN - 0272-8842
VL - 44
SP - 5581
EP - 5586
JO - Ceramics International
JF - Ceramics International
IS - 5
ER -