Organic solutions of niobium oxalate complexes for preparing Sr2AlNbO6 ceramic as a possible thermal barrier material; Journal of Solid State Chemistry; Vol. 361
| Parent link: | Journal of Solid State Chemistry.— .— Amsterdam: Elsevier Science Publishing Company Inc. Vol. 361.— 2026.— Article number 126083, 10 p. |
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| مؤلفون آخرون: | , , , , , , , , |
| الملخص: | Title screen New approaches to preparing powder and ceramics of double perovskite Sr2AlNbO6 (SAN) are presented. In addition to the conventional solid-state method, we employed organic solvents, sol-gel synthesis and liquid precursor plasma spraying (LPPS) to deposit SAN ceramic layers. For these purposes, we used a niobium oxalate complex forming stable solutions or gels in DMF with Sr2+ and Al3+ nitrates. We investigated the composition and thermal behavior of solutions, gels and prepared SAN samples and found that DMSO containing Nb precursor yields a stable impurity phase Sr4Al6O12(SO4) inside the final SAN powder. The measured linear thermal expansion coefficient (TEC) of sintered SAN is 12.4 × 10−6 K−1 at 1000 °C, which exceeds that for yttria-stabilized zirconia, YSZ (11 × 10−6 K−1). The LPPS SAN coating contains two phases, identified as SAN and an amorphous oxide. The Young's modulus and Vickers nanohardness of SAN in LPPS-coating are also better than those of YSZ coating deposited with conventional atmospheric plasma spraying (APS) Текстовый файл AM_Agreement |
| اللغة: | الإنجليزية |
| منشور في: |
2026
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| الموضوعات: | |
| الوصول للمادة أونلاين: | https://doi.org/10.1016/j.jssc.2026.126083 |
| التنسيق: | الكتروني فصل الكتاب |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=687122 |