Calcium‑magnesium‑aluminum-silicate-induced degradation of the plasma sprayed thermal barrier coating of high-entropy LnMgAl11O19 (Ln = La, Nd, Sm, Gd) at 1350 °C

2026-06-12

PRE

Wenjie Zhou

Guisheng Zhu

Zhenlin Lu

Xiaolong Chen *

Xiufang Gong

Juanqiang Ding

Xia Lou

Wei Wang *

Xinghua Zhong *

Feifei Zhou

DOI：10.1016/j.surfcoat.2026.133692

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Abstract

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• Plasma sprayed LnMgAl11O19 is introduced as a new CMAS resistant coating. • CMAS degradation mechanism of LnMA coating at 1350 °C is reported for the first time. • Smaller rare-earth cations are more effective at forming the corrosion product. • Coating pre-heated at 1200 °C for 100 h shows optimal resistance in long-term exposure. • High density underlies the superior CMAS resistance of LnMA bulk ceramic.

Calcium‑magnesium‑aluminum-silicate-induced degradation of the plasma sprayed thermal barrier coating of high-entropy LnMgAl11O19 (Ln = La, Nd, Sm, Gd) at 1350 °C

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Calcium‑magnesium‑aluminum-silicate-induced degradation of the plasma sprayed thermal barrier coating of high-entropy LnMgAl11O19 (Ln = La, Nd, Sm, Gd) at 1350 °C

Abstract

Journal

Organization

Cited Papers

Citing Papers

Calcium‑magnesium‑aluminum-silicate-induced degradation of the plasma sprayed thermal barrier coating of high-entropy LnMgAl11O19 (Ln = La, Nd, Sm, Gd) at 1350 °C