Packing density and consolidation energy of flocculated aqueous SiC suspension
Packing density and consolidation energy of flocculated aqueous SiC suspension
复制标题
絮凝 SiC 水悬浮液的堆积密度和固结能
DOI：
10.1016/j.jeurceramsoc.2004.10.021
复制
发表时间：
2006
影响因子：
5.7
通讯作者：
Y. Hirata
中科院分区：
文献类型：
--
作者：
Kota Kishigawa;Y. Hirata
使用研制的压力过滤装置，在pH 3.0(等电点附近)用0.8μm碳化硅颗粒30vol.%的水悬浮液连续记录固结期间的施加压力和悬浮高度。固结到固含量在46vol.%以上时，伴随着压力的快速增加。在19 Mpa的压力下，最大堆积密度达到62-63%，此时两个碳化硅颗粒之间的平均距离接近于0。固结能为1.6~1.8J/g-SiC。还报道了聚丙烯酸(分散剂)的加入对碳化硅悬浮液的固结能和压力释放后固结的碳化硅压坯应变松弛的影响。
The applied pressure and suspension height during consolidation were continuously recorded with an aqueous 30vol.% suspension of 0.8μm SiC particles at pH 3.0 (near the isoelectric point) using a developed pressure filtration apparatus. The consolidation to the solid content above 46vol.% was accompanied by a rapid increase of the pressure. The maximum packing density, where an average distance between two SiC particles was close to 0, reached 62–63% at 19MPa of applied pressure. The consolidation energy was 1.6–1.8J/g-SiC. The influence of the addition of polyacrylic acid (dispersant) on the consolidation energy of the SiC suspension and the strain relaxation of the consolidated SiC compact after the pressure release, are also reported.