Corrosion Behavior of CMAS on LaMgAl<sub>11</sub>O<sub>19 </sub>Coating

doi:10.12442/j.issn.1002-185X.20200672

Home > Archive>Volume 50, Issue 8, 2021 >2927-2932. DOI:10.12442/j.issn.1002-185X.20200672

Corrosion Behavior of CMAS on LaMgAl11O19 Coating
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                        10.12442/j.issn.1002-185X.20200672
                    
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Affiliation:School of Materials Science and Engineering,Beijing Institute of Technology
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Abstract:

The LaMgAl₁₁O₁₉ was prepared by air plasma spraying technology to investigate the corrosion behavior of 38CaO-5MgO-8AlO_1.5-49SiO₂ (CMAS) on high temperature. The microstructure, element distribution and phase composition of LaMgAl₁₁O₁₉ coating before and after CMAS corrosion were investigated. The results show that CaAl₂Si₂O₈ and MgAl₂O₄ can be observed in LaMgAl₁₁O₁₉ coating after corroded at 1250 ℃ for 24 h. Besides, according to the thickness of corroded zone in LaMgAl₁₁O₁₉ coating, the apparent activation energy in the temperature range of 1050~1250 ℃ is 94.1 kJ/mol.

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[Yajun Wang, Xinxin Ma, Rui Ma, Guangze Tang, Ling Liu. Corrosion Behavior of CMAS on LaMgAl₁₁O₁₉Coating[J]. Rare Metal Materials and Engineering,2021,50(8):2927~2932.]
DOI：10.12442/j. issn.1002-185X.20200672

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Received:September 04,2020
Revised:October 27,2020
Adopted:December 11,2020
Online: September 07,2021
Published: August 31,2021

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