The study of SEM shows that Cermet A and Cermet B both exhibit a typical core-rim structure, and the former ceramic particles consist of grey rims and black cores, while the latter particles consist of white and black cores and grey rims structures.

• SEM研究表明,在两种材料的显微组织中,陶瓷相均呈现芯-壳结构特征,即Cermet A陶瓷相由黑色的芯和灰色的壳构成,而Cermet B陶瓷相兼有黑白两种芯和灰色的壳结构。