The invention relates to Tapos. Hafnium oxide toughening material with-YSZ-coated Al2O3 core-shell structure as well as preparation method and application of hafnium oxide toughening material

The invention relates to a hafnium oxide-based toughening material of a T '-YSZ coated Al2O3 core-shell structure, a preparation method and application, and belongs to the technical field of high-temperature thermal protection materials.The high-temperature thermal protection coating prepared through the method has the high fracture toughness, the maximum fracture toughness can reach 2.36 +/-0.23 MPa.m < 1/2 >, and the hafnium oxide-based toughening material can be used as an alternative material of the high-temperature thermal protection coating material; the hafnium oxide-based toughening material with the T '-YSZ-coated Al2O3 core-shell structure, provided by the invention, is good in compactness, and the relative density is gt; and the preparation method is simple and easy to implement. 本发明涉及一种T′-YSZ@Al2O3核壳结构的氧化铪基增韧材料、制备方法以及应用，属于高温热防护材料技术领域，本发明制备的高温热防护涂层具有较高的断裂韧性，最高可达到2.36±0.23MPa·m1/2，可作为高温热防护涂层材料的备选材料；本发明提供T′-YSZ@Al2O3核壳结构的氧化铪基增韧材料致密性良好，相对密度>95％，且制备方法简单易行。