Model studies of surfaces and interfaces in ceramics

M. Kitayama, T. Narushima, K. Tran, G. Gronsky, A. M. Glaeser

Research output: Contribution to journalConference articlepeer-review

Abstract

For ceramics, surfaces and interfaces play a critical role in affecting the outcome of processing and sintering. The ultimate performance of ceramics and ceramic-containing composites and devices will also be impacted by surfaces and heterophase interfaces. This paper summarizes the development and application of model experiments for the study of ceramic/vapor and ceramic/metal interfaces. Lithography and etching when combined with solid-state diffusion bonding allow the internalization of controlled-geometry voids, whose morphological evolution can prove information on the coupling between surface energetics (Wulff shapes) and the kinetics of mass flow. Examples from studies of undoped sapphire and silicon carbide will be presented. We have recently demonstrated that filling the voids with metal prior to diffusion bonding allows the fabrication of arrays of encapsulated, controlled-geometry, metal particles (nickel or copper) within a single crystal ceramic host (sapphire). The potential for using such embedded particles for studies of ceramic/metal interface energetics and shape relaxation kinetics in ceramic/metal systems will be discussed.

Original languageEnglish
Pages (from-to)341-348
Number of pages8
JournalKey Engineering Materials
Volume247
Publication statusPublished - 2003
EventAdvanced Ceramics and Composites - Shanghai, China
Duration: 2002 Nov 192002 Nov 22

Keywords

  • Ceramic/Metal Interfaces
  • Copper
  • Equilibrium Shape
  • Morphological Stability
  • Nickel
  • Sapphire
  • Silicon Carbide
  • Surface Energy
  • Surface Transport

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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