氧化钇基高熵固溶体陶瓷的SPS烧结与性能研究  

Study on SPS Sintering and Properties of Yttrium Oxide-based High Entropy Solid Solution Ceramics

作　　者：吕姗姗 孙旭东[1] 霍地[1] LV Shan-shan;SUN Xu-dong;HUO Di(Key Laboratory of Anisotropy and Textureof Materials(Ministry of Education),Liaoning Shenyang 110006,China)

机构地区：[1]东北大学材料各向异性与织构教育部重点实验室,辽宁沈阳110006

出　　处：《广州化工》2021年第17期61-64,共4页GuangZhou Chemical Industry

基　　金：国家自然科学基金(No:51872033)。

摘　　要：研究了以蔗糖为燃料剂,通过溶胶-凝胶燃烧反应制备以氧化钇为主要成分的固溶体氧化物粉末,并且以SPS烧结技术制备氧化钇基高熵陶瓷。研究了球磨对粉末以及SPS烧结工艺对陶瓷性能的影响。采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、红外光谱(FT-IR)和显微硬度分析对陶瓷组织与性能进行了表征。结果表明:粉体制备过程中球磨有助于消除杂相,提高粉体分散度和均匀性;SPS烧结高熵陶瓷硬度最高达到8.683 GPa,在红外波段透过率也接近40%。The preparation of yttrium oxide powder by sol-gel combustion with sucrose as fuel was studied.Yttrium oxide based high entropy ceramics were prepared by spark plasma sintering(SPS)method,and the effects of ball milling on powder and SPS sintering process on ceramic properties were studied.The microstructure and properties were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),infrared spectroscopy(FT-IR)and microhardness analysis.The results showed that ball milling was helpful to eliminate the impurity phase and improve the dispersion and uniformity of powder.The highest hardness of SPS sintered high entropy ceramics was 8.683 GPa,and the transmittance in infrared band was close to 40%.

关 键 词：高熵陶瓷 SPS 氧化钇 

分 类 号：TQ174.7[化学工程—陶瓷工业]