Spark Plasma Sintering (SPS) of Lanthanum Magnesium Hexaaluminate (LaMgAl11O19)

Lanthanum Magnesium Hexaaluminate (LaMgAl11O19, LaMA) is a promising material for various applications, including thermal barrier coatings, catalysts, and optical materials, due to its unique properties such as high-temperature thermodynamic and structural stability, low thermal conductivity, and good chemical resistance. In this study, the densification of synthesized LaMA powder was investigated using spark plasma sintering (SPS) by evaluating parameters such as density, porosity, and mechanical properties of the sintered samples. The results showed that SPS densification achieved a relative density of 97.56% and a flexural strength of 367± 13 MPa, which is in good agreement with the findings of other researchers. Changes in the X-ray diffraction pattern and scanning electron microscopy images also indicated the presence of rearrangement and grain growth in the sintered microstructure.

Spark Plasma Sintering (SPS) of Lanthanum Magnesium Hexaaluminate (LaMgAl11O19) Keywords:

Lanthanum magnesium hexaaluminates (LaMgAl11O19) , Spark plasma sintering , Densification , Mechanical properties , X-ray diffraction , Scanning electron microscopy.