Fabrication of carbon-decorated Al2O3 composite powders using cellulose nanofiber for selective laser sintering

被引：5

作者：

Kuwana T. ^{[1
]}

Tan W.K. ^{[2
]}

Yokoi A. ^{[2
]}

Kawamura G. ^{[1
]}

Matsuda A. ^{[1
]}

Muto H. ^{[1
,2
]}

机构：

[1] Dept. Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi

[2] Dept. Institute of Liberal Arts and Science, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi

来源：

Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy | 2019年 / 66卷 / 04期

基金：

日本学术振兴会;

关键词：

Additive manufacturing; Cellulose nanofiber; Electrostatic adsorption; Nano-assembly technique; Selective laser sintering;

D O I：

10.2497/jjspm.66.168

中图分类号：

学科分类号：

摘要：

In this study, systematic investigation using cellulose nanofiber (CellNF) as a carbon source for selective laser sintering (SLS) of Al2O3 was conducted. A composite powder that consisted of CellNF and Al2O3 was fabricated using electrostatic adsorption (EA) method in aqueous suspension. Heat-treatment temperature of 500 and 800°C was compared for the conversion of CellNF to carbon residue (CR) in the Al2O3 composite. After that, the parameters involving the volume fraction of CR and effect of Al2O3 particle size in the CR-Al2O3 composite particle were also investigated in order to obtain an optimized condition of the CR-Al2O3 composite particle for SLS. From the results obtained, 1.5 wt% CR-Al2O3 with alumina size of 0.8 μm that was heat-treated at 800°C exhibited optimum laser sinter ability owing to the good CR distribution over a higher surface area that promoted good laser adsorption for the alumina sintering. ©2019 Japan Society of Powder and Powder Metallurgy

引用

页码：168 / 173

页数：5