工程陶瓷由于对工艺带来的缺陷特别敏感,又没有延展性,因此更需要采用可靠的无损质检方法。随着工程陶瓷在愈来愈多的地方成功地应用,迫切需要有快而可靠的资料,以改进加工工艺,消除临界缺陷,提高产量。另外,也需要了解和掌握无损质检的信息,从而可以提出有关陶瓷零部件的验收标准。 材料抗裂纹扩展的能力同它的断裂韧性有关。金属材料在吸收能量后会发生塑性变 Engineering ceramics are particularly sensitive to the defects brought by the process and have no ductility. Therefore, reliable and nondestructive quality inspection methods are also needed. As engineering ceramics are successfully applied in more and more places, there is an urgent need for fast and reliable information to improve processing techniques, eliminate critical defects and increase yields. In addition, also need to understand and grasp the quality of non-destructive testing of information, which can be submitted on the acceptance criteria of ceramic components. The ability of a material to resist crack propagation is related to its fracture toughness. Metallic materials undergo plastic deformation after absorbing energy