Microstructural Effects on the Machining Performance of Dental Ceramics

Abstract

Constraints of mechanical, thermal, and chemical properties are making ceramics the material choice for industrial and dental applications. The quality of a machined surface of ceramics is fundamentally dependent on the response of the material to the machining process. This paper presents a combined analytical and experimental study with focus on optimizing the machining performance of dental ceramics -- DICOR/MGC -- with three distinguished microstructures. The study starts from analyzing the microstructural characteristics to searching for the machining conditions that provide satisfactory performance in terms of acceptable flexural strength. Evidence gained from the cutting force measurements and evaluation of fracture strength degradation indicates that the control of micro-scale fracture formed on the machined surface, with microstructural characteristics being considered, is the key factor which dominates the machining performance.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1997
Accession Number
ADA605292

Entities

People

  • D. T. Le
  • Guangming Zhang
  • Lixun Qi
  • Stanley J. Ng

Organizations

  • University of Maryland

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Ceramic Materials
  • Data Analysis
  • Degradation
  • Electron Microscopes
  • Engineering
  • Fabrication
  • Flexural Strength
  • Grain Size
  • Heat Treatment
  • Machining
  • Manufacturing
  • Materials
  • Measurement
  • Mechanical Engineering
  • Mechanical Properties
  • Microstructure
  • Test And Evaluation

Fields of Study

  • Materials science

Readers

  • Manufacturing Engineering.
  • Powder metallurgy of Titanium alloys.
  • Theoretical Analysis.