In order to improve the heat resistance of carbon fiber reinforced resin matrix composites

Ni/NiCrAlY/8YSZ(ZrO

2

– 8%Y

2

O

3

) composite coatings were prepared on cyanate ester resin-based carbon fiber substrate by plasma spraying

and the phase composition and microstructure of the coatings were analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The heat resistance of Ni/NiCrAlY/8YSZ composite coating was studied by using the ablation resistance test. The results show that the Ni/NiCrAlY/8YSZ composite coating prepared by plasma spraying has a compact structure

and there are no obvious defects such as interlaminar gaps and pores

and the composite coating can protect the substrate well after the ablation test

and at

1000 ℃

the pores are generated inside the coating

but it is tightly combined with the substrate

and the interface is not damaged.