纳米氧化锆添加量对氧化锆制品性能的影响  

Effect of Additive Amount of Nanometre Zirconia Powder on Properties of Zirconia Products

作　　者：樊拓 杜晶[1] 薛群虎[1,2] 王浩 FAN Tuo;DU Jing;XUE Qun-hu;WANG Hao(College of Materials and Mineral Resources, X i ’ an University of Architecture and Technology, X i ’ an 710055, China;Shaanxi Academy of Engineering and Technology Circular Economy,XiJ an 710055 ,China)

机构地区：[1]西安建筑科技大学材料与矿资学院,西安710055 [2]陕西循环经济工程技术院,西安710055

出　　处：《硅酸盐通报》2018年第4期1277-1281,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金面上项目(51372193);陕西省自然科学基础研究计划项目(2014JM6224)

摘　　要：在电熔单斜氧化锆原料中添加不同数量的CaO稳定剂,制备部分稳定氧化锆,研究CaO加入量和稳定相数量的关系。在制备的CaO部分稳定氧化锆中添加纳米氧化锆粉体,经过造粒、200 MPa压力成型、干燥、1650℃×2 h烧成制得试样。测试试样的物理性能、分析矿物相组成、观察显微结构,研究纳米氧化锆粉体添加量对试样性能的影响。研究结果表明:2Ca-PSZ、3Ca-PSZ、4Ca-PSZ试样中,4Ca-PSZ试样稳定化程度最高;3Ca-PSZ试样显气孔率小,体积密度较大,耐压强度高。在3Ca-PSZ试样中加入纳米氧化锆粉体,随着加入量的增加,试样的显气孔率下降、烧成收缩率增加、耐压强度提高。其中纳米氧化锆粉体添加比例为8wt%时,试样气孔率为9.4%,体积密度为5.08 g/cm^3,抗压强度达到381 MPa。与3Ca-PSZ试样相比,气孔率下降40%,体积密度提高5%,耐压强度提高70%。The partially stabilized zirconia were fabricated using CaO as stabilizer and fused Zr02 fine powder as main raw materials, and the relationship between additive amount of CaO and content of stable phase were reserched. The Ca-PSZ sample with nanometre zirconia powder were prepared through granulation, molding under 200 MPa pressure, drying and sintering at 1650 Tl X 2 h. The effects of nanometre zirconia powder addition on zirconia products was reserched via testing the physical properties, observing microstructure and analysing mineral phase composition of the samples. The results show that the stability of the 4Ca-PSZ sample is the highest, the 3Ca-PSZ sample obtained minimum apparent porosity, highest density and compressive strength under 2Ca-PSZ, 3Ca-PSZ, 4Ca-PSZ samples. With the increase of the content of nanometre zirconia powder under 3Ca-PSZ, the porosity decreased the burning shrinkage and compressive strength increased. When the addition ratio of nano zirconia powder is 8% , the porosity of sample is 9. 47% , which reduces by 40% than 3Ca-PSZ sample. The volume density is 5. 08 g/cm3, which improves by 5% than 3Ca-PSZ, meanwhile, its compressive strength reaches 381 MPa, which improves by 70% than 3Ca-PSZ.

关 键 词：纳米氧化锆粉体 氧化钙稳定剂 氧化锆制品性能 

分 类 号：TQ174[化学工程—陶瓷工业]