In:
Key Engineering Materials, Trans Tech Publications, Ltd., Vol. 368-372 ( 2008-2), p. 1828-1830
Abstract:
A novel rapid prototyping manufacturing technology for glass-alumina functionally gradient
materials (G-A FGMs) based on the quick solidification of wax was proposed. The feature of the technology came from its layer-by-layer fabrication of the wax-glass/alumina composite layer carved in
accordance with the shape of each layer of the computer designed model and in situ casting of wax into the carved area. Removal of the wax in the G-A FGMs green body was investigated based on differential
scanning calorimetry (DSC) analysis. Sintering properties of the G-A FGMs were discussed. Bending strength of the G-A FGMs was measured by a three-point flexural test. Microstructures of the prepared
G-A FGMs were observed using environmental scanning electron microscope (ESEM) and the compositional distribution was determined according to energy dispersive spectrum (EDS). Samples
were preliminarily and respectively held at 200°C and 300°C for a long time based on the DSC analysis. The range of the optimal sintering temperature is determined to be from 710°C to 720°C and the holding
time is 30min. With the increasing alumina content, the bending strength increases and the maximum bending strength is 67.5MPa. There is no delamination of the G-A FGMs via ESEM. Homogeneous
distribution of the ingredient materials is confirmed through EDS.
Type of Medium:
Online Resource
ISSN:
1662-9795
DOI:
10.4028/www.scientific.net/KEM.368-372
DOI:
10.4028/www.scientific.net/KEM.368-372.1828
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2008
detail.hit.zdb_id:
2073306-9
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