Accession Number : ADA329881

Title :   Stereolithography Apparatus for Free Form Fabrication of Ceramics

Descriptive Note : Final technical rept. 1 Jan 95-31 Dec 96

Corporate Author : MICHIGAN UNIV ANN ARBOR DEPT OF MATERIALS SCIENCE AND ENGINEERING

Personal Author(s) : Halloran, John W.

PDF Url : ADA329881

Report Date : 25 AUG 1997

Pagination or Media Count : 24

Abstract : During this grant we installed a 3D Systems SLA 250/40 stereolithography apparatus, and used it to directly fabricate ceramic green bodies from ultraviolet (UV) curable solutions which contain dispersed ceramic powders. We emphasized SLA of alumina as a structural ceramic and for investment casting cores. Viscosity was reduced with improved dispersion. The quality of the prototypes was improved by determination of appropriate build styles, and by optimization of photoinitiators and photoresins. The latter were studied by photo-differential scanning calorimetry, and photo-rheology.

Descriptors :   *CERAMIC MATERIALS, ULTRAVIOLET RADIATION, POWDERS, FABRICATION, PROTOTYPES, LITHOGRAPHY, ALUMINUM OXIDES, CURING AGENTS, INVESTMENT CASTING.

Subject Categories : Ceramics, Refractories and Glass
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE