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Toughening of the ceramic superconductor Bi-2223 with Ag

Els Bruneel (UGent) , Isabel Van Driessche (UGent) , Serge Hoste (UGent) and Joris Degrieck (UGent)
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Abstract
In an attempt to increase the toughness of the high temperature superconductor Bi1.5Pb0.5Sr2Ca2Cu3Ox (Bi-2223) we synthesised composites with three different filler morphologies of Ag. It is shown that Ag-addition improves Bi-2223 grain growth and reduces sample-porosity. Little effect on the mechanical strength is observed but the mismatch in thermal expansion coefficient induces a residual stress field at the filler matrix interface and allows toughening mechanisms to appear. This results in a clear post-peak behaviour when filler with high aspect ratio is used. The effect of the aspect ratio on the efficiency of the toughening mechanisms is studied.
Keywords
functional ceramic materials, toughening, ceramic matrix composite

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Chicago
Bruneel, Els, Isabel Van Driessche, Serge Hoste, and Joris Degrieck. 2002. “Toughening of the Ceramic Superconductor Bi-2223 with Ag.” In Proceedings of the European Conference on Composite Materials 10. European Society for Composite Materials.
APA
Bruneel, Els, Van Driessche, I., Hoste, S., & Degrieck, J. (2002). Toughening of the ceramic superconductor Bi-2223 with Ag. Proceedings of the European conference on composite materials 10. Presented at the 10th European Conference on Composite Materials (ECCM-10), European Society for Composite Materials.
Vancouver
1.
Bruneel E, Van Driessche I, Hoste S, Degrieck J. Toughening of the ceramic superconductor Bi-2223 with Ag. Proceedings of the European conference on composite materials 10. European Society for Composite Materials; 2002.
MLA
Bruneel, Els, Isabel Van Driessche, Serge Hoste, et al. “Toughening of the Ceramic Superconductor Bi-2223 with Ag.” Proceedings of the European Conference on Composite Materials 10. European Society for Composite Materials, 2002. Print.
@inproceedings{162256,
  abstract     = {In an attempt to increase the toughness of the high temperature superconductor Bi1.5Pb0.5Sr2Ca2Cu3Ox (Bi-2223) we synthesised composites with three different filler morphologies of Ag. It is shown that Ag-addition improves Bi-2223 grain growth and reduces sample-porosity. Little effect on the mechanical strength is observed but the mismatch in thermal expansion coefficient induces a residual stress field at the filler matrix interface and allows toughening mechanisms to appear. This results in a clear post-peak behaviour when filler with high aspect ratio is used. The effect of the aspect ratio on the efficiency of the toughening mechanisms is studied.},
  author       = {Bruneel, Els and Van Driessche, Isabel and Hoste, Serge and Degrieck, Joris},
  booktitle    = {Proceedings of the European conference on composite materials 10},
  keywords     = {functional ceramic materials,toughening,ceramic matrix composite},
  language     = {eng},
  location     = {Brugge, Belgium},
  pages        = {4},
  publisher    = {European Society for Composite Materials},
  title        = {Toughening of the ceramic superconductor Bi-2223 with Ag},
  year         = {2002},
}