| Green Properties of Dry Pressed Alumina Compact
Prepared Using Aloe Vera Gel and Sucrose as a Binder |
Jyoti, Vaibhav Pandey, Mayank Kumar Yadav, Kalyani Mohanta and Vinay Kumar Singh*
Pages : 7-14
DOI : 10.1080/0371750X.2022.2032359 |
| Abstract |
| The present study is focused on the scope of aloe vera (AV) gel and sucrose as a
binder to prepare green ceramic compact samples through dry pressing. The alumina
compacts having 0-14 wt% (0-2.8 wt% on dry basis) AV gel and 0-2 wt% sucrose binder
have been prepared as a function of moisture content at optimum compaction pressure.
The green properties of the resulting samples have been characterized through SEM,
FTIR, etc and compared with other binders. Primary results revealed that alumina
compact with an optimum binder content attained maximum green density and flexural
strength. The maximum green density and maximum green flexural strength are 64%
and 13.5 Mpa, respectively. The experimental results have also been correlated with
the microstructure of green compacts. Dry pressed compacts are sufficiently strong
for green machining. The strength of binder-based green ceramic samples has been
attributed to better particle packing due to adsorbing and plasticizing properties of
AV gel and sucrose binder, as revealed by IR analysis. The sintered properties of fired
samples at 1600oC have exhibited minimum (2.3%) porosity. Therefore, the current
study creates a scope of AV gel and sucrose as a binder for the green processing of
alumina based compacts.
[Keywords: Alumina, Binder, Aloe vera gel, Sucrose, Green properties] |
| Full text : Subscribe to Download Full Text |
| [Go Back] |
|
