TY - JOUR
T1 - Effect of dilution and additive on direct nitridation of ferrosilicon
AU - Wang, Yaohui
AU - Cheng, Laifei
AU - Guan, Jiasuo
AU - Zhang, Litong
PY - 2014/5
Y1 - 2014/5
N2 - Ferrosilicon nitrides were fabricated by direct nitridation of ferrosilicon, and the effects of ferrosilicon nitride and α-Si3N4 dilution and ammonium chloride (NH4Cl) additive on characteristics of the nitride products were investigated. The phases of final nitride products consist of α-Si3N4, β-Si3N4 and iron silicides with various compositions. Long columnar crystals, equiaxed crystals and flower-like crystals were observed in the final products, and fiber or whisker-like crystals with a low degree of crystallization were also found in the nitrides. Both the diluents and additive can improve the nitridation degree, but only the additive can increase the content of α-Si3N4 in the nitride products. As a diluent, ferrosilicon nitride can decrease the cost of nitride products, and increase their nitridation degree more than α-Si3N4. NH4Cl made the products fluffy and expansive, while the dimensions of the compact without addition of NH4Cl remain unchanged during nitridation.
AB - Ferrosilicon nitrides were fabricated by direct nitridation of ferrosilicon, and the effects of ferrosilicon nitride and α-Si3N4 dilution and ammonium chloride (NH4Cl) additive on characteristics of the nitride products were investigated. The phases of final nitride products consist of α-Si3N4, β-Si3N4 and iron silicides with various compositions. Long columnar crystals, equiaxed crystals and flower-like crystals were observed in the final products, and fiber or whisker-like crystals with a low degree of crystallization were also found in the nitrides. Both the diluents and additive can improve the nitridation degree, but only the additive can increase the content of α-Si3N4 in the nitride products. As a diluent, ferrosilicon nitride can decrease the cost of nitride products, and increase their nitridation degree more than α-Si3N4. NH4Cl made the products fluffy and expansive, while the dimensions of the compact without addition of NH4Cl remain unchanged during nitridation.
KW - Additive
KW - Dilution
KW - Direct nitridation
KW - Ferrosilicon nitrides
UR - http://www.scopus.com/inward/record.url?scp=84892469066&partnerID=8YFLogxK
U2 - 10.1016/j.jeurceramsoc.2013.10.021
DO - 10.1016/j.jeurceramsoc.2013.10.021
M3 - 文章
AN - SCOPUS:84892469066
SN - 0955-2219
VL - 34
SP - 1115
EP - 1122
JO - Journal of the European Ceramic Society
JF - Journal of the European Ceramic Society
IS - 5
ER -