Influence of Silicon Nitride (Si3N4) on Mechanical and Dielectric Properties of a Novel Fused Silica Ceramic Composites

Silicon ◽  
2021 ◽  
Author(s):  
Kishore Kumar Kandi ◽  
Gurabvaiah Punugupati ◽  
Pagidi Madhukar ◽  
C. S. P. Rao ◽  
Murthy Chavali
Keyword(s):  
Dielectric Properties ◽  
Silicon Nitride ◽  
Ceramic Composites ◽  
Fused Silica ◽  
Silica Ceramic

scholarly journals Effect of Silicon Nitride (Si3N4) on Mechanical and Dielectric Properties of Fused Silica Ceramic Composites

2021 ◽  
Author(s):  
Pagidi Madhukar ◽  
Kishore Kumar Kandi ◽  
Gurabvaiah Punugupati ◽  
C.S.P. Rao
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Flexural Strength ◽  
Ceramic Composites ◽  
Fused Silica ◽  
Solid Loading ◽  
Monomer Ratio ◽  
Monomer Content ◽  
Gelcasting Process ◽  
Silica Ceramic

Abstract Fused silica ceramics composites were widely using for the fabrication of radomes which is the vital component of a missile. The required properties were attained by the addition of small amounts of Silicon Nitride (Si3N4) to the fused silica for enhancing flexural strength and without disturbing the dielectric properties. In the present work, porous fused silica ceramic composites were fabricated using gelcasting process, a near net shaping technique. The experiments were conducted using Response Surface Methodology (RSM) central composite with face centered design with six centre points approach. The process parameters of gelcasting process such as solid loading, monomer ratio, monomer content and additive (Si3N4) were considered as input parameters and flexural strength, porosity and dielectric constant as response parameters. Single parameter and interaction parameter effect on responses were studied. The effectiveness of derived models was compared with Analysis of Variance (ANOVA) at 95% confidence level. Statistical analysis proven that input parameters have critical effect on responses. The derived RSM mathematical models have a higher R2 values (Flexural strength 97.62%, Porosity 95.12% and dielectric constant 95.93%) which shows the critical relation between actual and predicted values. The optimal responses obtained were flexural strength 86.173 MPa, porosity 39.767% and dielectric constant 6.949 corresponding parameters process parameters solid loading 47.95%, additive (Si3N4) 10.43 wt%, monomer content 15 wt% and monomer ratio 3.

Erosion Behavior of Gelcast Fused Silica Ceramic Composites

Silicon ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 903-911
Author(s):  
Gurabvaiah Punugupati ◽  
P. S. C. Bose ◽  
G. Raghavendra ◽  
C. S. P. Rao ◽  
S. Ojha
Keyword(s):  
Ceramic Composites ◽  
Fused Silica ◽  
Erosion Behavior ◽  
Silica Ceramic

Novel magnetodielectric cobalt ferrite–titania–silica ceramic composites with tunable dielectric properties

2016 ◽  
Vol 42 (15) ◽  
pp. 16650-16654
Author(s):  
Pietro Galizia ◽  
Davide Gardini ◽  
Simona Ortelli ◽  
Claudio Capiani ◽  
Maksimas Anbinderis ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Cobalt Ferrite ◽  
Ceramic Composites ◽  
Silica Ceramic

Modeling and optimization of wear characteristics of gelcast fused silica ceramic composites using RSM

2018 ◽  
Vol 5 (2) ◽  
pp. 6946-6953 ◽  
Author(s):  
Gurabvaiah Punugupati ◽  
Kishore Kumar Kandi ◽  
P.S.C. Bose ◽  
C.S.P. Rao
Keyword(s):  
Ceramic Composites ◽  
Fused Silica ◽  
Wear Characteristics ◽  
Modeling And Optimization ◽  
Silica Ceramic

Microstructure and properties of silicon nitride-matrix ceramic composites

1998 ◽  
Vol 39 (1) ◽  
pp. 22-25
Author(s):  
I. Yu. Kelina ◽  
V. A. Drobinskaya ◽  
L. A. Plyasunkova
Keyword(s):  
Silicon Nitride ◽  
Ceramic Composites ◽  
Microstructure And Properties

scholarly journals Synthesis of polymer-derived graphene/silicon nitride-based nanocomposites with tunable dielectric properties

2016 ◽  
Vol 124 (10) ◽  
pp. 981-988 ◽  
Author(s):  
Xifan WANG ◽  
Gabriela MERA ◽  
Koji MORITA ◽  
Emanuel IONESCU
Keyword(s):  
Dielectric Properties ◽  
Silicon Nitride
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