Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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A Study on Glass-Infiltrated Alumina and Spinel Composite I. Effect of Microstructure and Glass Content on Contant Damage and Strength

유리침윤 알루미나 및 스핀넬 복합체에 관한 연구 I. 미세구조 및 유리함량이 접촉손상 및 강동에 미치는 영향

  • 정연길 (한양대학교 무기재료공학과) ;
  • 최성철 (한양대학교 무기재료공학과)
  • Published : 1998.07.01
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Abstract

Hertzian indentation tests with sphere indenters were used to study the mechanical properties of glass-in-filtrated alumina and spinel composites and evaluated the effect of preform microstructure and evaluated the effect of preform microstructure and glass con-tents on contanct damage and strength. The spinel composite showed more brittle behavior than the alumina composite which is verified from indentation stress-strain curve cone cracks and quasi-plastic deformation developed at subsurface. Failure originated from either cone cracks(brittle mode) or deformation zone(quasi-plastic mode) above critical load for cracking(Pc) and yield ({{{{ {P }_{Y } }}) with the brittle mode more dominant in the spinels and the quasi-plastic mode more dominant in the aluminas. Even though brittle mode was dominant in the spinel composites the strength degradation from accumulation of damage above these critical loads was conspicuously small suggesting that the glass-infiltrated composites should be highly damage tolerant to the blunt contacts.

Keywords

References

  1. Ann. Rev. Mater. Sci. v.27 Ceramics in Retorative and Prosthetic Dentistry J. R. Kelly
  2. Compendium v.17 no.8 Dental Ceramic Restorative Systems R. A. Giordano
  3. PH. D. Dissertation Strength Microstructure Relationship in a Dental Alumina Glass Composite H. Hornberger
  4. Quintessenz Zanhtech v.16 no.1 Vita In-Ceram, a New System for Producing Aluminum Oxide Crown and Bridge Substructure H. Claus
  5. Inter. J. Prosthodont. v.6 no.3 Survival Rate of In-Ceram Restorations L. Probster
  6. Inter. J. Periodon. and Restor. Dent. v.14 Five Years Clinical Experiences with a Leucite-Reinforced Porcelain Crown System J. A. Hankanson;E. G. Cappetta
  7. Quintessence Dental Techol. v.16 InCeram: Testing a New Ceramic Material H. Kappert;H. Knode
  8. Inter. J. Prosthodont. v.8 no.3 Relative Flexural Strength of Six New Ceramic Materials R. R. Seghi;J. A. Sorensen
  9. Inter. J. Prosthodont. v.3 Fracture Surface Analysis of Dental Ceramics: Clinically Failed Restorations J. R. Kelly;R. Giordano;R. Pober;M. J. Cima
  10. J. Prosthodont. v.5 Contact Damage as a Failure Mode during In Vitro Testing C. K. Harvey;J. R. Kelly
  11. Proc. Roy. Soc. Lond. v.A299 no.1458 On the Theory of Hertzian Fracture F. C. Frank;B. R. Lawn
  12. J. Appl. Phys. v.41 no.8 Effect of a Reactive Environment on the Hertzian Strength of Brittle Solids F. B. Langitan;B. R. Lawn
  13. J. Mater. Sci. v.10 no.6 Indentation Fracture: Principles and Applications B. R. Lawn;T. R. Wilshaw
  14. J. Phys. D: Appl. Phys. v.4 no.10 The Hertzian Fracture Test T. R. Wilshaw
  15. Philos. Mag. v.A68 no.5 Indentation Fatigue: A Simple Cyclic Hertzian Test for Measuring Damage Accumulation in Polycrystal Ceramics F. Guiberteau;N. P. Padture;H. Cai;B. R. Lawn
  16. J. Am. Ceram. Soc. v.77 no.7 Effect of Grain Size on Hertzian Contact in Alumina F. Guiberteau;N. P. Padture;B. R. Lawn
  17. Science v.263 Making Ceramics Ductile B. R. Lawn;N. P. Padture;H. Cai;F. Guiberteau
  18. J. Am. Ceram. Soc. v.64 no.19 A Critical Evaluation of Indentation Techniques for Measuring Fracture Toughness: 1.Direct Crack Measurements G. R. Anstis;P. Chantikul;D. B. Marshall;B. R. Lawn
  19. Hardness of Metals D. Tabor
  20. J. Acous. Soc. Am. v.33 Pulse-Superposition Methods for Measuring Ultrasonic Wave Velocities in Solids H. J. McSkimin
  21. Symposium on Dynamic Modulus Measurements The Pulsed Ultrasonic Velocity Method for Determining Material Dynamic Elastic Moduli G. V. Blessing;Wolfenden A.(ed.)
  22. J. Am. Ceram. Soc. v.65 no.9-10 Flaw Characteristics in Dynamic Fatigue: The Influence of Residual Contact Stresses D. B. Marshall;B. R. Lawn
  23. J. Am. Ceram. Soc. v.80 no.4 Hertzian Contact Damage in Porous ALumina Ceramics B. A. Latella;B. H. O'Connor;N. P. Padture;B. R. Lawn
  24. J. Mater. Res. v.8 Postfailture Subsidiary Cracking from Indentation Flaws Mulhearn To
  25. J. Dent. Res. Mechanical Characterization of Dental Ceramics Using Hertzian Contacts I. M. Peterson;A. Pajares;B. R. Lawn;V. P. Thompson;E. D. Rekow
  26. J. Mater. Sci. v.10 no.6 Indentation Fracture: Principles and Applications B. R. Lawn;T. R. Wilshaw
  27. J. Am. Ceram. Soc. A Model of Strength Degradation Form Hertzian Contact Damage in Tough Ceramics B. R. Lawn;S. K. Lee;I. M. Peterson;S. Wuttiphan