Hot corrosion behavior and wettability of calcium-magnesium-alumina-silicate (CMAS) on LaTi2Al9O19 ceramic

被引：49
|
作者：
Qu, Weiwei [1 ]
Li, Shusuo [1 ]
Chen, Zehao [1 ]
Li, Chun [1 ]
Pei, Yanling [1 ]
Gong, Shengkai [1 ]
机构：
[1] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
来源：
CORROSION SCIENCE | 2020年 / 162卷
基金：
中国国家自然科学基金;
关键词：
LaTi2Al9O19; ceramic; Thermodynamic calculation; Wettability; Calcium-magnesium-alumina-silicate (CMAS); Anorthite; THERMAL BARRIER COATINGS; Y2O3-STABILIZED ZRO2; RESISTANT; MECHANISMS; AL2O3;
D O I：
10.1016/j.corsci.2019.108199
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The development of thermal barrier coating (TBC) has been limited by the calcium-magnesium-alumina-silicate (CMAS) corrosion. In this work, a promising CMAS-resisted LaTi2Al9O19 (LTA) rich in Ti and Al is proposed. CMAS corrosion behavior of LTA ceramics is investigated at a temperature range of 1200 degrees C- 1300 degrees C. By combining the experimental results and thermodynamics analysis, Ca and Si are arrested effectively by formation of CaAl2Si2O8 layer and (Ca,La-0.7)(Ti,Al)O-3 to prevent CMAS from moving downward. Meanwhile, the contact angle of CMAS on LTA is larger than that of YSZ, contributing to the CMAS resistance.
引用
收藏
页数：11
相关论文
共 24 条
  • [1] Hot Corrosion Behavior of Double-ceramic-layer LaTi2Al9O19/YSZ Thermal Barrier Coatings
    Xie Xiaoyun
    Guo Hongbo
    Gong Shengkai
    Xu Huibin
    CHINESE JOURNAL OF AERONAUTICS, 2012, 25 (01) : 137 - 142
  • [2] Hot corrosion behavior of LaTi2Al9O19 ceramic exposed to vanadium oxide at temperatures of 700-950 °C in air
    Zhou, Xin
    Xu, Zhenhua
    He, Limin
    Xu, Jiaying
    Zou, Binglin
    Cao, Xueqiang
    CORROSION SCIENCE, 2016, 104 : 310 - 318
  • [3] Hot corrosion behavior of BaLa2Ti3O10 exposed to calcium-magnesium-alumina-silicate at elevated temperatures
    Ye, Jianxing
    Wang, Caimei
    Guo, Lei
    Yu, Yang
    Ye, Fuxing
    Li, Muyu
    Wang, Huakun
    Yang, Zhenglong
    CERAMICS INTERNATIONAL, 2018, 44 (09) : 10220 - 10228
  • [4] Hot corrosion behavior of Y4Al2O9 ceramics for thermal barrier coatings exposed to calcium-magnesium-alumina-silicate at 1250 °C
    Yu, Jianxing
    Wang, Caimei
    Yu, Yang
    Yuan, Qiwei
    Tan, Yuna
    Feng, Zhiqiang
    JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2019, 39 (04) : 1487 - 1495
  • [5] Improvement on corrosion resistance of molten calcium-magnesium-alumina-silicate (CMAS) by Yb2O3-Y2O3 co-stabilized ZrO2 ceramic pellets
    Liu, Yangguang
    Liu, Wei
    Wang, Weize
    Zhang, Wenkang
    Yang, Ting
    Li, Kaibin
    Tang, Zhongxiang
    Liu, Chen
    Zhang, Chengcheng
    CORROSION SCIENCE, 2024, 227
  • [6] Impact of bond coat types on calcium-magnesium-alumina-silicate and hot corrosion behavior in thermal barrier coatings
    Sigaroodi, Mohammadrasoul Javadi
    Rahimi, Javad
    Poursaeidi, Esmaeil
    Montakhabi, Farzam
    CORROSION SCIENCE, 2024, 227
  • [7] Interactions Between Sc2O3 Ceramics and Calcium-Magnesium-Alumina-Silicate (CMAS) at Elevated Temperature
    Mo, Zupeng
    Mo, Zijian
    Yu, Zhiyun
    Cheng, Yifan
    Miao, Yiling
    Liang, Tianquan
    CRYSTALS, 2025, 15 (02)
  • [8] Impermeability of Y3Al5O12 ceramic against molten glassy calcium-magnesium-alumina-silicate
    Xue, Zhaolu
    Ma, Yue
    Gong, Shengkai
    Guo, Hongbo
    CHINESE JOURNAL OF AERONAUTICS, 2018, 31 (12) : 2306 - 2311
  • [9] Calcium-magnesium-alumina-silicate (CMAS) corrosion behavior of A6B2O17 (A=Zr, Hf; B=Nb, Ta) as potential candidate for thermal barrier coating (TBC)
    Li, Hao
    Yu, Yiping
    Fang, Bing
    Xiao, Peng
    Li, Wei
    Wang, Song
    CORROSION SCIENCE, 2022, 204
  • [10] High temperature behavior of HfSiO4 subjected to calcium-magnesium-alumina-silicate (CMAS) and high-velocity water vapor
    Li, Hao
    Yu, Yiping
    Fang, Bing
    Xiao, Peng
    Li, Wei
    Wang, Song
    JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2023, 43 (02) : 621 - 628
123