Incorporating sugarcane bagasse ash into Al₂O₃ ceramic tapes

Abstract

High-temperature co-fired ceramic (HTCC) technology has attracted increasing attention due to its cost-benefit ratio and excellent working capacity in adverse temperature environments, 1,2,3 applying to components of gas turbine engines for high-temperature aircraft. 4,5 Typically, fibers ceramic matrices are commonly used in exhaust structures in these turbines, presenting irregular and low hardness surfaces, which generate insufficient resistance to wear and erosion. 6,7 Thus, it is necessary to develop ceramic substrates that serve as protective covers for these materials. 8,9 We commonly use alumina ceramic matrices as the material for substrates and packages because of their excellent mechanical and thermal properties, high dielectric strength, high resistivity, and thermal and chemical stability. 10,11 However, the use of pure alumina nanoparticles is limited for this purpose, considering that its sintering temperature for dense bodies occurs above 1350°C. 12,13 The incorporation of industrial waste such as from the sugarcane bagasse ash (SCBA) into the alumina substrate serves as a flux, decreasing the sintering temperature. 14,15 Generally, waste will have discarded outdoors, causing significant environmental problems, affecting flora, fauna, and people's

Structural and magnetic behavior of zirconia‐magnetic particles and zirconia‐graphene composite ceramics

“…22,23 In this regard, the tape casting technique stands out for its easy dispersion of the material incorporated in the ceramic matrix, making it essential for the final properties of the composite. 24,25 In particular, this technique uses organic materials like the solid phase suspending vehicle, facilitating faster evaporation and preventing problems of solubility or oxidation. 26 Other advantages are the production of laminates with varied geometries and sizes, easy thickness control, reliability, simplicity, resistance, flexibility, and low cost.…”