3D-Printed lightweight ceramics using capillary suspensions with incorporated nanoparticles
3D-Printed lightweight ceramics using capillary suspensions with incorporated nanoparticles
复制标题
使用掺有纳米颗粒的毛细管悬浮液 3D 打印轻质陶瓷
DOI：
10.1016/j.jeurceramsoc.2020.02.055
复制
发表时间：
2020
影响因子：
5.7
通讯作者：
Willenbacher N
中科院分区：
文献类型：
--
作者：
Weiß M;Sälzler P;Willenbacher N
报道了一种制备具有高机械强度的定制多孔烧结材料的新的通用方法。自组装机制在烧结前在粗陶瓷颗粒之间的接触区域沉积了微量的纳米颗粒，导致了大而均匀致密的烧结桥。这使孔隙率增加了高达75%，同时提供了比类似材料更高的机械强度，即使在引入较弱的二氧化硅纳米颗粒时也是如此。这条路线非常适合机器人铸造和传统挤压，因此可以用于快速原型和大规模生产。我们报道了轻质大孔陶瓷的最高抗压强度与重量比，覆盖了无与伦比的密度范围，同时在可定制的微观结构中提供了非凡的灵活性。强度主要由硅桥决定，氧化铝和铝硅酸盐结构的强度相同。最后，在保留内表面积的情况下，这种方法可以通过点焊颗粒来构建层次化结构。
A new versatile route is reported to produce tailored porous sintering materials with high mechanical strength. A self-assembly mechanism deposits trace amounts of nanoparticles at contact areas between coarse ceramic particles prior to sintering, resulting in large and uniformly dense sintering bridges. This increases the porosity up to 75 % and simultaneously offers higher mechanical strength in comparison to similar materials even when weaker silica nanoparticles are introduced. This route is ideally suited for robocasting as well as conventional extrusion and, thus, can be used for rapid prototyping and mass production. We report the highest compressive strength-to-weight ratios for lightweight macroporous ceramics, covering an unrivaled density range while offering exceptional flexibility in tailorable microstructure. The strength is dominated by the silica bridges and identical strength is achieved for alumina and aluminosilicate structures. Finally, this route can be used to build hierarchical structures by point-welding particles while preserving inner surface area.
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DOI：
10.1016/j.colsurfa.2016.03.006
发表时间：
2016-05-20
影响因子：
5.2
作者：
Maurath, Johannes;Bitsch, Boris;Willenbacher, Norbert
通讯作者：
Willenbacher, Norbert
影响因子：
2.4
作者：
Hauf K;Riazi K;Willenbacher N;Koos E
通讯作者：
Koos E
毛细管悬浮液多孔陶瓷的收缩率和尺寸精度
影响因子：
5.7
作者：
M. Weiss;Johannes Maurath;N. Willenbacher;E. Koos
通讯作者：
E. Koos
影响因子：
3.9
作者：
Dittmann, Jens;Willenbacher, Norbert
通讯作者：
Willenbacher, Norbert
影响因子：
1.9
作者：
Hauf K;Koos E
通讯作者：
Koos E