材料科学
热障涂层
热喷涂
氧化钇稳定氧化锆
悬挂(拓扑)
涂层
图层(电子)
复合材料
锆酸盐
渗透(HVAC)
溶液前驱体等离子喷涂
双层(生物学)
复合数
立方氧化锆
陶瓷
数学
同伦
纯数学
钛酸酯
作者
Kah Leng,Acacio Rincón Romero,Tanvir Hussain
标识
DOI:10.1016/j.jeurceramsoc.2023.04.014
摘要
Rare-earth (RE) zirconates, such as gadolinium zirconate (GZ), gained much attraction to be used for the next generation TBC. A double-layer and triple-layer TBC were deposited using the suspension and solution precursor high velocity oxy fuel (HVOF) thermal spray. A dense solution precursor GZ layer was intended to minimise the crack propagation from underneath, thereby inhibiting the CMAS infiltration. In the furnace cycling test, the double- and triple-layer coatings had a comparable cyclic lifetime. For the CMAS test, both the double- and triple-layer coatings were exposed to CMAS at 1250 °C for 30 mins. The CMAS deposits melted and infiltrated both coatings through the dense vertical cracks (DVCs). Interestingly, the GZ reacted with the molten CMAS to form a gadolinium apatite phase (Ca2Gd8(SiO4)6O2) that was detected in the double- and triple-layer TBC. Both the double- and triple-layer TBCs succeeded in reacting with CMAS.
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