Preparation and Experimental Investigation of Lanthanum Hexa-Aluminate Calcinated Powders

Lanthanum hexa-aluminate (LHA) has garnered significant attention as a highperformance material for thermal barrier coating (TBC) applications, primarily due to its exceptional thermal stability, low thermal conductivity, and resistance to hightemperature degradation.However, LHA's ability to retain its structural integrity under these extreme conditions.The goals of this work are to synthesize and characterize three different compositions of Alumina/Lanthanum hexa-aluminate (Alumina/LHA) ceramic powders.The synthesis process was carried out using chemical precipitation followed by filtration process.After synthesis, the ceramic powders were calcinated.The calcination was carried out at three different temperatures: 750, 900, and 1000 for each sample.This thermal treatment enabled the researchers to study the evolution of the material's crystalline structure as a function of temperature and composition.X-ray diffraction (XRD) peak profile analysis was performed to determine phase transformations and investigate the crystallographic properties of the powders for changes induced by calcination.Field emission scanning electron microscopy (FESEM) was used to study the microstructure, while energy-dispersive X-ray spectroscopy (EDX) was performed to analyze elemental composition and distribution in the samples.