期刊
CERAMICS INTERNATIONAL
卷 43, 期 1, 页码 578-584出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2016.09.197
关键词
Glass-ceramic; Particle size gradation; Three-dimensional printing; Mechanical properties; Flowability
资金
- Project Based Personnel Exchange Program with China Scholarship Council [2014-6065]
- German Academic Exchange Service [57136615]
- program of the National Natural Science Foundation of China [51205303, 51323007]
Particle size gradation is regarded as an effective method for overcoming the contradicting requirements in three-dimensional printing (3DP). In present work, particle size gradation was optimized to obtain both acceptable flowability of the powder material and high-strength 3D-printed glass-ceramic products. The effect of gradation on the printing process, sintering process and performance of the 3D-printed glass-ceramic products was investigated comprehensively. The glass-ceramic powders with three size ranges were mixed in certain proportions and applied to print parts. The result showed parts printed with powder mixed by 60 wt% 45100 gm and 40 wt% 0-25 mu m particles had satisfactory density of 1.60 g/cm(3) and bending strength of 13.8 MPa. The flowability decreased with an increasing proportion of fine particles. Part density was determined by the powder bulk density in the powder bed as well as the shrinkage during sintering while strength of part was found to be dependent on the sintering degree.
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