Hot-corrosion behavior of calcium-magnesium aluminosilicate melts on Ba1/3Sr1/3Ca1/3Al2Si2O8

Hot-corrosion behavior of Ba1/3Sr1/3Ca1/3Al2Si2O8 (BSCAS) in the presence of molten calcium-magnesium-aluminum-silicate (CMAS) is investigated in the temperature range of 1250–1350 °C. In comparison, the hot corrosion behavior of Ba0.5Sr0.5Al2Si2O8 (BSAS) is also studied under the same conditions. T...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the European Ceramic Society 2023-12, Vol.43 (15), p.7111-7117
Main Authors: Zhang, Shuai, Luan, Shiliang, Ren, Ke, Xu, Baosheng, Wang, Yiguang
Format: Article
Language:English
Subjects:
Ceramic matrix composites
CMAS corrosion
Environmental barrier coatings
Homogeneous cations
Multi-component cations
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Hot-corrosion behavior of Ba1/3Sr1/3Ca1/3Al2Si2O8 (BSCAS) in the presence of molten calcium-magnesium-aluminum-silicate (CMAS) is investigated in the temperature range of 1250–1350 °C. In comparison, the hot corrosion behavior of Ba0.5Sr0.5Al2Si2O8 (BSAS) is also studied under the same conditions. The results indicate that CMAS corrosion of both BSCAS and BSAS is caused by the interdiffusion of Ba/Sr and Ca between CMAS and corroded samples. The presence of Ca cations in BSCAS lowers the diffusion driving force of Ca cations between CMAS and BSCAS, resulting in a reduced diffusion rate of Ca cations from CMAS into BSCAS. Moreover, the sluggish diffusion effect of multi-component cations hinders the outward diffusion of Ba/Sr cations from BSCAS. Thus, the BSCAS shows a better CMAS corrosion resistance than BSAS.
ISSN:0955-2219
DOI:10.1016/j.jeurceramsoc.2023.07.032