Accession Number:

ADA605292

Title:

Microstructural Effects on the Machining Performance of Dental Ceramics

Descriptive Note:

Technical rept.

Corporate Author:

MARYLAND UNIV COLLEGE PARK DEPT OF MECHANICAL ENGINEERING

Report Date:

1997-01-01

Pagination or Media Count:

16.0

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 -- DICORMGC -- 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.

Subject Categories:

  • Ceramics, Refractories and Glass
  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE