以氮化铝、富铝镁铝尖晶石和氧化铝为原料,用放电等离子烧结(SPS)技术合成了单相MgAlON,研究了其显微结构,并与用传统的无压烧结(PLS)技术制备的单相MgAlON材料在显微结构和断裂行为上做了比较.结果表明:用SPS法在1700℃保温1 min的条件下合成出的单相MgAlON材料,显微结构比用PLS法合成的更加均匀致密,且晶粒细小;前者的断裂模式主要是穿晶断裂,后者的断裂模式则主要是沿晶断裂.
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