Extreme Materials

Ceramic-based abradable sealing coatings for advanced aeroengines: Materials design, structural strategies, and multifunctional performance

Leyao Wang, Shuqi Wang, Guoliang Chen, Yongchun Zou, Shuang Yu, Enyu Xie, Qingyuan Zhao, Zhiyun Ye, Jiahu Ouyang, Yaming Wang, Dechang Jia, Yu Zhou

Extreme Materials, 2025, 1(4): 33-58. DOI: 10.1016/j.exm.2025.08.003

	Influence relative to the reference spraying parameters set of spraying parameters on coatings' structural attributes and properties
	High	Medium	Low
Void content
Increase	None	None	${\mathrm{H}}_{2}{ }^{+},{\mathrm{H}}_{2}{ }^{-},{D}_{\text{spray}\text{ }}^{+},{\mathrm{I}}^{-},{d}_{\text{powder}\text{ }}^{-}$
Decrease	${D}_{\text{spray}\text{ }}^{-},{\mathrm{A}\mathrm{r}}^{+}$	I⁺,Ar^-
Void size
Increase	${D}_{\text{spray}\text{ }}^{+}$	I^-	${\mathrm{H}}_{2}{ }^{+},{\mathrm{H}}_{2}{ }^{-},{\mathrm{A}\mathrm{r}}^{-},{d}_{\text{powder}\text{ }}^{-}$
Decrease	${D}_{\text{spray}\text{ }}^{-},{\mathrm{A}\mathrm{r}}^{+}$	I⁺
Wear erosion resistance
Increase	I⁺	${D}_{\text{spray}\text{ }}^{-}$	H₂ ⁺,Ar^-,Ar⁺
Decrease	I^-	${D}_{\text{spray}\text{ }}^{+},{\mathrm{H}}_{2}{ }^{-},{d}_{\text{powder}\text{ }}^{-}$
Calculated Young modulus
Increase	${D}_{\text{spray}\text{ }}^{-}$	I^-,Ar⁺	I⁺,H₂ ⁺,H₂ ^-,Ar^-
Decrease	None	${D}_{\text{spray}\text{ }}^{+}$
Calculated thermal conductivity
Increase	${D}_{\text{spray}\text{ }}^{-}$	I⁺,Ar⁺	H₂ ⁺,H₂ ^-,Ar^-
Decrease	${D}_{\text{spray}\text{ }}^{+}$	I^-

Table 4 Influence of manufacturing process parameters on coatings microstructure and properties[20].

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