Thermal decomposition and crystallization behavior of double rare-earth co-doped SrZrO3 precursor used in the solution precursor plasma spray process
Thermal decomposition and crystallization behavior of double rare-earth co-doped SrZrO3 precursor used in the solution precursor plasma spray process
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溶液前驱体等离子喷涂工艺中双稀土共掺杂SrZrO3前驱体的热分解与结晶行为
DOI：
10.1016/j.surfcoat.2019.03.080
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发表时间：
2019-07
影响因子：
5.4
通讯作者：
Wang Ruigang
中科院分区：
文献类型：
--
作者：
Meng Xiangfeng;Li Enbo;Huang Wei;Bai Yu;Ma Wen;Wang Ruigang
采用硝酸盐水溶液前驱体[Sr(NO3)2、Gd(NO3)3·6H2O、Yb(NO3)3·6H2O]和Yb(NO3)3·6H2O]，通过溶液前驱体等离子喷涂(SPPS)制备了双稀土(Yb/Gd)共掺杂SrZrO3[Sr1.1(Zr0.9Yb0.05Gd0.05)O3.05]热障涂层(TBC)。乙酸锆[Zr(C2H3O2)4]。采用X射线衍射(XRD)和同步热分析仪结合傅里叶变换红外光谱和四极杆质谱(STA/FTIR/QMS)方法研究和表征了在高温(~1400℃)下煅烧的溶液前驱体粉末的热分解和结晶过程。 Zr(C2H3O2)4前驱体首先分解为ZrO2、CH3COCH3和CO2，随后分解为水合硝酸盐。 ZrO2与SrO(Yb2O3、Gd2O3)和CO2反应，同时生成Yb/Gd共掺杂的SrZrO3和SrCO3。 SrCO3在较高温度下再次分解为SrO，SrO与ZrO2反应生成SrZrO3。通过 XRD 和扫描电子显微镜 (SEM) 分析，Sr1.1(Zr0.9Yb0.05Gd0.05)O3.05 涂层为单相，具有层间边界 (IPB) 结构、纳米和微米孔隙率以及贯穿厚度的垂直裂纹。根据Scherrer公式计算出涂层的平均晶粒尺寸为~30nm。
A double rare-earth (Yb/Gd) co-doped SrZrO3[Sr1.1(Zr0.9Yb0.05Gd0.05)O3.05] thermal barrier coating (TBC) was prepared by the solution precursor plasma spray (SPPS) using an aqueous solution precursor of nitrates [Sr(NO3)2, Gd(NO3)3·6H2O, Yb(NO3)3·6H2O] and zirconium acetate [Zr(C2H3O2)4]. The thermal decomposition and crystallization process of the solution precursor powders calcined at elevated temperature (~1400 °C) were studied and characterized by X-ray diffraction (XRD) and synchronous thermal analyzer coupled with Fourier transform infrared spectroscopy and quadrupole mass spectrometry (STA/FTIR/QMS) methods. Zr(C2H3O2)4precursor decomposed into ZrO2, CH3COCH3and CO2firstly, followed by decomposition of hydrated nitrate. ZrO2reacted with SrO (Yb2O3, Gd2O3) and CO2to generate Yb/Gd co-doped SrZrO3and SrCO3simultaneously. SrCO3decomposed into SrO again at higher temperature, which reacted with ZrO2to form SrZrO3. The Sr1.1(Zr0.9Yb0.05Gd0.05)O3.05coating was characterized as single phase with interpass boundary (IPB) structure, nano- and micrometer porosity, and through-thickness vertical cracks, analysed by XRD and the scanning electron microscope (SEM). The average grain size of the coating was calculated to be ~30 nm by Scherrer formula.
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影响因子：
5.4
作者：
M. Gell;L. Xie;Xinqing Ma;E. Jordan;N. Padture
通讯作者：
M. Gell;L. Xie;Xinqing Ma;E. Jordan;N. Padture
影响因子：
--
作者：
Goldschmidt, VM
通讯作者：
Goldschmidt, VM
影响因子：
3.9
作者：
Chen, Dianying;Jordan, Eric H.;Ma, Xinqing
通讯作者：
Ma, Xinqing
影响因子：
3.1
作者：
Yanfeng Xiao;L. Song;Xiaoguang Liu;Yi Huang;Tao Huang;Ji-yong Chen;Yao Wu;Fang Wu
通讯作者：
Yanfeng Xiao;L. Song;Xiaoguang Liu;Yi Huang;Tao Huang;Ji-yong Chen;Yao Wu;Fang Wu
双稀土氧化物共掺锆酸锶作为新型热障涂层材料
影响因子：
3.1
作者：
Ma, Wen;Wang, Dongxing;Dong, Hongying;Lun, Wenshan;He, Weiyan;Zheng, Xuebin
通讯作者：
Zheng, Xuebin