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Investigation of Thermomechanical Properties of Al2O3–TiB2/Silicon Carbide Ceramic Nanocomposites for Thermal Barrier Coatings
https://orcid.org/http://orcid.org/0000-0003-2519-7033
Thermal-resistive coatings play a vital role in enhancing the thermomechanical performance and service life of materials, especially in high-temperature applications such as gas turbine engines and nuclear power plants. This study focuses on investigating the thermal and mechanical behavior of silicon carbide (SiC)-based ceramic composites with two distinct combinations of titanium diboride (TiB2) and aluminum oxide (Al2O3) fillers. The ceramic composites were prepared using the powder metallurgy technique, followed by hot press sintering at a high temperature of 1400 °C. To characterize the post-ablated composite samples, thermogravimetric analysis (TGA) was conducted to assess their thermal stability, while scanning electron microscopy (SEM) was employed to examine their surface morphology. The TGA results revealed that the addition of Al2O3 nanofiller led to significant weight mass loss around 950 °C, whereas hybrid SiC-based composites showed weight loss in the range of 650 °C. The oxyacetylene flame test results indicated that ceramic composites with 0.5wt% of Al2O3 and 0.5wt% of TiB2 exhibited lower mass and linear ablation rates. The addition of TiB2 filler resulted in an impressive reduction of 80% in linear ablation rate and 85% in mass ablation rates for the composites. The findings from this study contribute to the understanding and development of advanced thermal-resistive coatings for critical industrial applications.
Investigation of Thermomechanical Properties of Al2O3–TiB2/Silicon Carbide Ceramic Nanocomposites for Thermal Barrier Coatings
https://orcid.org/http://orcid.org/0000-0003-2519-7033
Thermal-resistive coatings play a vital role in enhancing the thermomechanical performance and service life of materials, especially in high-temperature applications such as gas turbine engines and nuclear power plants. This study focuses on investigating the thermal and mechanical behavior of silicon carbide (SiC)-based ceramic composites with two distinct combinations of titanium diboride (TiB2) and aluminum oxide (Al2O3) fillers. The ceramic composites were prepared using the powder metallurgy technique, followed by hot press sintering at a high temperature of 1400 °C. To characterize the post-ablated composite samples, thermogravimetric analysis (TGA) was conducted to assess their thermal stability, while scanning electron microscopy (SEM) was employed to examine their surface morphology. The TGA results revealed that the addition of Al2O3 nanofiller led to significant weight mass loss around 950 °C, whereas hybrid SiC-based composites showed weight loss in the range of 650 °C. The oxyacetylene flame test results indicated that ceramic composites with 0.5wt% of Al2O3 and 0.5wt% of TiB2 exhibited lower mass and linear ablation rates. The addition of TiB2 filler resulted in an impressive reduction of 80% in linear ablation rate and 85% in mass ablation rates for the composites. The findings from this study contribute to the understanding and development of advanced thermal-resistive coatings for critical industrial applications.
Investigation of Thermomechanical Properties of Al2O3–TiB2/Silicon Carbide Ceramic Nanocomposites for Thermal Barrier Coatings
https://orcid.org/http://orcid.org/0000-0003-2519-7033
Thermal-resistive coatings play a vital role in enhancing the thermomechanical performance and service life of materials, especially in high-temperature applications such as gas turbine engines and nuclear power plants. This study focuses on investigating the thermal and mechanical behavior of silicon carbide (SiC)-based ceramic composites with two distinct combinations of titanium diboride (TiB2) and aluminum oxide (Al2O3) fillers. The ceramic composites were prepared using the powder metallurgy technique, followed by hot press sintering at a high temperature of 1400 °C. To characterize the post-ablated composite samples, thermogravimetric analysis (TGA) was conducted to assess their thermal stability, while scanning electron microscopy (SEM) was employed to examine their surface morphology. The TGA results revealed that the addition of Al2O3 nanofiller led to significant weight mass loss around 950 °C, whereas hybrid SiC-based composites showed weight loss in the range of 650 °C. The oxyacetylene flame test results indicated that ceramic composites with 0.5wt% of Al2O3 and 0.5wt% of TiB2 exhibited lower mass and linear ablation rates. The addition of TiB2 filler resulted in an impressive reduction of 80% in linear ablation rate and 85% in mass ablation rates for the composites. The findings from this study contribute to the understanding and development of advanced thermal-resistive coatings for critical industrial applications.
Investigation of Thermomechanical Properties of Al2O3–TiB2/Silicon Carbide Ceramic Nanocomposites for Thermal Barrier Coatings
J. Inst. Eng. India Ser. D
Subha, S. (author) / Raju, Nalli Shalem (author) / Yadav, Kodi Vaishnav Kumar (author) / Kumar, Gutti Nithin (author)
Journal of The Institution of Engineers (India): Series D ; 105 ; 1027-1039
2024-08-01
13 pages
Article (Journal)
Electronic Resource
English
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