The Study of Alumina Ceramic to Metal Bonding

알루미나 소결체와 금속간의 접합에 관한 연구

  • 김종희 ;
  • 김형준
  • Published : 1978.02.01

Abstract

The basic mechanism of adherence in sintered high purity alumina ceramic-to-metal bonding was studied. Emphasis was placed on flux composition, porosity of the fired ceramics, and metallizing mixtures. The study was conducted on 95 and 99.5% alumina, using molydbenum-manganese, molybdenum-manganese-silicon dioxide metallizing compositions. Metallizing was performed in wet hydrogen (dew point, +17$^{\circ}C$) at 145$0^{\circ}C$ for 45min. This experiment indicated that adhernece mechanism of ultra high purity alumina ceramic was attributed to formation of $MnAl_2O_$4, and in the case of 95% alumina containing glass, the migration of glass from the interface into the void of the metal coating was the main role to the adhrence. It showed also that greater the bond-strength was resulted as porosity was increased.

Keywords

References

  1. The Salvania Technologist v.8 no.1 New Developments in Metal-Ceramic Seals H. Bender
  2. J. Amer. Cer. Soc. v.41 no.51 Initial Sintering of Alumina and Hematite R.L Coble
  3. U.S. Patent 2 163 407 Ceramic-to-Metal Seals H. Pulfrich
  4. J. Mat. Sci. v.10 High-Temperature Metallizing M.E. Twentyman
  5. J. Amer. Cer. Soc. v.37 no.8 Advances in Ceramics Related to Electronic Tube Developments L. Navias
  6. Cer. Bull v.35 no.3 Trends in Design of Ceramic-to-Metal Seals for Magnetrons L.J. Cronin
  7. NASA Report, SP-5052 Joining Ceramics and Graphite to Other Materials H.E. Patte;R.M. Evans;R.E. Monroe
  8. M.S. Thesis A Study of Metal-to-Ceramic Bonding 김형준
  9. J. Electrochemical Soc. v.102 no.7 Review of High Temperature Metal-Ceramic Seals. H. Palmour Ⅲ