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The Effect of Spark Plasma Sintering on Densification, Mechanical Properties, and Crystallographic Texture of LaMgAl11O19 | ||
| Innovations in Materials: Current & Future | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 06 دی 1404 | ||
| نوع مقاله: Original Paper | ||
| شناسه دیجیتال (DOI): 10.22075/imcf.2025.39796.1051 | ||
| نویسندگان | ||
| Mohammadmehdi Khorramirad* 1؛ Sanaz Hasanzadeh1؛ Mohammad Reza Rahimipour2؛ Mohammad Mehdi Hadavi3؛ Kourosh Shirvani4 | ||
| 1Semnan-Iran | ||
| 2Ceramic Department of Materials and Energy Research Center (MERC), Karaj, Alborz, Iran | ||
| 3Department of Materials Engineering, Tarbiat Modares University, Tehran, Iran | ||
| 4Department of Advanced Materials and New Energies, Iranian Research Organization for Science and Technology (IROST), Tehran, Iran | ||
| تاریخ دریافت: 01 آذر 1404، تاریخ بازنگری: 25 آذر 1404، تاریخ پذیرش: 30 آذر 1404 | ||
| چکیده | ||
| 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 densi-fication of synthesized LaMA powder was investigated using spark plasma sintering (SPS). The effects of SPS on the relative density, mechanical properties, and crystallographic tex-ture were evaluated. The results showed that SPS achieved a high relative density of 97.56 ± 0.25% and a flexural strength of 367± 13 MPa, which is in good agreement with the find-ings of other researchers. Remarkably, X-ray diffraction analysis revealed the development of a strong crystallographic texture in the sintered body, characterized by a significant preferential orientation of the (006) plane (Texture Coefficient = 2.82). Scanning electron microscopy confirmed microstructural rearrangement and grain growth. The formation of this textured microstructure, attributed to the preferential alignment of platelet-like grains under uniaxial pressure during SPS, is a key finding of this work and contributes to the understanding of structure-property relationships in SPS-processed hexaaluminates. | ||
| کلیدواژهها | ||
| Lanthanum Magnesium Hexaaluminates (LaMgAl11O19)؛ Spark Plasma Sintering؛ Crystallographic Texture؛ Densification؛ Mechanical Properties | ||
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