Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
권호 표지

Contact Resistance and Electrode Degradation on Semiconducting PTC $BaTiO_3$ Ceramics

반도성 PTC $BaTiO_3$ 세라믹에서 전극의 접촉 저항 및 퇴화

  • 박철우 (영남대학교 무기재료공학과) ;
  • 조경호 (경남대학교 전자공학과) ;
  • 이희영 (영남대학교 무기재료공학과) ;
  • 이재열 (영남대학교 무기재료공학과)
  • Published : 1996.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

The electrode resistance of semiconducting PTC BaTiO3 ceramic material was studied in some detail. Comme-rical In-Ag paste In-Ga alloy and electroless plated Ni as well as evaporated Al were chosen as electrode. The contact resistance of electroded samples were measured by both dc resistivity and ac impedance analysis. The aging effect on contact resistance under cyclic loading from -1$0^{\circ}C$ to 85$^{\circ}C$ was also monitored for the prolonged period of time. In case of Al electroded samples the heat treatment and protective coating had effects on the stability against contact resistance degradation. It was also found that the samples with commercial In-Ag paste and electroless plated Ni electrode had good properties of contact resistance against aging.

Keywords

References

  1. J. Mat. Sci. v.6 no.9 Semiconducting Barium Titanate W. Heywang
  2. Advances in Ceramics v.1 PTC Materials Technology B.M. Kulwicki
  3. 재료학회지 v.3 no.5 BaTiO₃계 PTC 재료에서 입계 modifier의 역할 이준형;조상희
  4. エレクトロニク セラミクス no.March PTC サ-ミスタ用 雲極材料 佐マ木 宏
  5. J. Electrochem. Soc. v.107 no.3 Ohmic Contacts to Semiconducting Ceramics D.R. Turner;H.A. Sauer
  6. J. Am. Ceram. Soc. v.49 no.4 Electroless Nickel-Phorous Alloy Electrode for Semiconductive Barium Titanate Ceramics T. Nitla(et al.)
  7. Proc. 6th ISAF Instabilities in PTC Resistors B.M. Kulwicki
  8. Solid-St. Comm. v.64 no.4 Contact Resistance of the Electrodes on Semiconducting Ceramics S.O. Yoon(et al.)
  9. Ceramic Materials for Electronics 36- R.C. Buchanan(ed.)
  10. J. Phys. Chem. Solids v.30 Study of Solid Electrolyte Polarization by a Complex Admittance Method J.E. Bauerle
  11. 요업학회지 v.28 no.2 PTC BaTiO₃및 전극의 직류 및 교류 특성 전표용;최경만
  12. Mat. Res. Bull. v.21 no.9 Complex-plane Impedance Analysis for Semiconducting Barium Titanate H.S. Maiti(et al.)
  13. J. Metals Trans AIME. v.197 Measurement of Particle Sizes in Opaque Bodies R.L. Fullman