Effect of binder concentration ratio on the mechanical and thermal properties of silicon nitride ceramics
Year: 2026
Type: article
Abstract: Silicon nitride powder is a crucial raw material for fabricating silicon nitride ceramics, with its properties exerting a decisive influence on the final product’s performance. This study investigates the influence of polyvinyl alcohol (PVA) and polyacrylic acid (PAA) as binder additives on the characteristics of the resulting ceramics. Silicon nitride powder was treated with varying concentration ratios of PVA and PAA, followed by spray granulation to produce granulated powder. Subsequent hot-pressing sintering was conducted, and the performance of the sintered silicon nitride ceramics was evaluated. The results indicate that the optimal ratio of PVA to PAA is 2 wt.% : 2 wt.%, which yielded superior comprehensive properties, including thermal conductivity, mechanical strength, hardness, and volume resistivity.
Authors: Jingkai Nie, Yiming Zhang, Dong Hou, Yu Han, Qiang He, Jun Ji, Zhixiang Zhu
Institution: China Electric Power Research Institute
Language: English
Subfield: Ceramics and Composites
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,134
Funder: State Grid Corporation of China
Award: G6974368677
OpenAlex ID: W7203712813