Self-healing YSZ-La-Mo-Si heterogeneous coating fabricated by plasma spraying to protect carbon/carbon composites from oxidation

To protect carbon/carbon (C/C) composites against oxidation, YSZ-La-Mo-Si (YSZ-LMS) heterogeneous coating was prepared by the plasma spraying using YSZ (Y2O3-stabilized ZrO2), MoSi2 and LaB6 as raw materials. Microstructure and surface chemistry of the coatings were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope (TEM) and X-ray photoelectron spectroscopy (XPS). Moreover, the...