SPS烧结(Mg,Zn)Al_(2)O_(4)透明陶瓷的微观结构及性能  

Microstructure and Properties of SPS Sintered(Mg,Zn)Al_(2)O_(4)Transparent Ceramics

作　　者：刘彪 郝艳 张文龙[1,2] 王彬 张艺博[1,2] LIU Biao;HAO Yan;ZHANG Wenlong;WANG Bin;ZHANG Yibo(State Key Laboratory for Environment-friendly Energy Materials,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China;School of Materials and Chemistry,Mianyang 621010,Sichuan,China)

机构地区：[1]西南科技大学环境友好能源材料国家重点实验室,四川绵阳621010 [2]西南科技大学材料与化学学院,四川绵阳621010

出　　处：《西南科技大学学报》2024年第3期22-29,共8页Journal of Southwest University of Science and Technology

基　　金：国家自然科学基金青年基金(51802272)。

摘　　要：尖晶石透明陶瓷是一种应用广泛的透明材料。通过放电等离子烧结技术制备了(Mg_(1-x)Zn_(x))Al_(2)O_(4)透明陶瓷,研究了Zn^(2+)含量对其微观结构、致密化、透光率及硬度的影响。在(Mg_(1-x)Zn_(x))Al_(2)O_(4)透明陶瓷中,随着Zn^(2+)含量的增加,陶瓷的致密度变化并不明显,在x=0.8时致密度约为99.31%;Zn^(2+)对陶瓷的光学透过率有显著的提升作用,在x=0.8时,陶瓷在620~6220 nm波长范围内透过率均优于80%,且陶瓷的红外起始衰减波长发生红移;(Mg,Zn)Al_(2)O_(4)透明陶瓷的硬度整体优于MgAl_(2)O_(4),在x=0.8时,硬度达到(13.53±0.24)GPa,比MgAl_(2)O_(4)提高了约9%;(Mg,Zn)Al_(2)O_(4)透明陶瓷的断裂韧性随Zn^(2+)离子的增加逐渐降低。Zn^(2+)离子的加入能提高MgAl_(2)O_(4)尖晶石透明陶瓷透过率与硬度。Spinel transparent ceramics is a kind of transparent material widely used.Spark plasma sintering was used to produce the(Mg_(1-x)Zn_(x))Al_(2)O_(4)transparent ceramics,and the effects of Zn^(2+)content on microstructure,densification,light transmission,and hardness were researched.In(Mg_(1-x)Zn_(x))Al_(2)O_(4)transparent ceramics,the density of the material does not vary significantly with the addition of Zn^(2+),remaining at roughly 99.31%at x=0.8.Zn^(2+)has a significant effect on the optical transmittance of ceramics.At x=0.8,the ceramics has rates of transmission that are greater than 80%in the 620-6220 nm wavelength range.The beginning attenuation wavelength of the ceramic infrared is redshifted.Transparent ceramics made of(Mg,Zn)Al_(2)O_(4)has a higher overall hardness than MgAl_(2)O_(4).The hardness increases to(13.53±0.24)GPa at x=0.8,which is nearly 9%greater than the hardness of MgAl_(2)O_(4).Transparent ceramics made of(Mg,Zn)Al_(2)O_(4)gradually decrease fracture toughness as Zn^(2+)is added.The addition of Zn^(2+)ions can improve the transparency and hardness of MgAl_(2)O_(4)spinel transparent ceramics.

关 键 词：(Mg_(1-x)Zn_(x))Al_(2)O_(4)透明陶瓷 放电等离子烧结技术 微观结构 光学性能 力学性能 

分 类 号：TQ174.758.23[化学工程—陶瓷工业]