无团聚,纳米ZrO2增韧Al2O3基陶瓷材料

本文通过微波加热ＺｒＯＣｌ２·８Ｈ２Ｏ的醇水深液．用ＨＰＣ作分散剂．制备出无团聚、单分散的纳米水合二氧化锆。然后采用胶体工艺制备出Ａｌ２Ｏ３－ＺｒＯ２先躯体均混合的粉体。用ＸＲＤ分析ＺＴＡ的相结构。用ＳＥＭ观察断口形貌。结果发现，ＺｒＯ２均匀地分布在ＺＴＡ陶瓷中。粒径小于５００ｎｍ，并且主要以ｔ－ＺｒＯ２形式稳定存在。最后探讨了ＺＴＡ的增韧机制。     

大功率CO2激光熔凝稳定ZrO2

利用大功率ＣＯ２激光熔凝稳定ＺｒＯ２高温快离子导体获得成功．报导了激光熔凝的原理、工艺过程及熔凝后样品的微观分析等研究结果．激光熔凝的ＣＳＺ和ＭＳＺ快离子导体样品在温度为１０００℃时的电导率达到２×１０－２Ω－１ｃｍ－１量级．     

Stuey of Thermodynamic Properties of Nonstoichiometric Phase 〈Zr1—zCezO2—x〉 with Compound Energy Model

Using compound energy model (CEM), the thermodynamic properties of and were evaluated. The evaluation was based on the optimization of ZrO2-CeO2 and ZrO2-CeO1.5 systems, as well as the miscibility gap in CeO1.5-CeO2 system. Except the cubic fluorite structure phase assessed with compound energy model, all the other solution phases were assessed with subsitutional solution model. The model parameters were evaluated through fitting the selected experimental data by means of thermodynamic optimization. A set of parameters with thermodynamics self-consistency was obtained and satisfactorily described the complex relation between y in and the partial pressure of oxygen at different temperatures, also the interdependence among miscellaneous factors such as temperature, oxygen partial pressure, the reduction amount of CeO2 as well as the nonstoichiometry in cubic phase . The calculated results seem to be reasonable when put into the explanation of pressureless sintering of CeO2-stabilized ZrO2 powder compacts at a controlled oxygen partial pressure.     

ZrO2粒度对ZrO2-C质耐火材料耐蚀性的影响

利用不同粒度的ZrO2改变耐火材料和保护渣的接触面积，研究其对耐蚀性的影响。     

不同干燥工艺制备CaO—ZrO2复合氧化物粉体及粉体性能表征

采用烘箱干燥、乙醇脱水－烘箱干燥及乙醇脱水－超临界流体干燥三种工艺对共沉淀制备的ＣａＯ－ＺｒＯ２复合水凝胶进行脱水处理，考察了干燥工艺对产品粉体性能的影响。     

Sol—Gel法制备ZrO2—SnO2薄膜的常温气敏机理

根据Ｓｏｌ－Ｇｅｌ工艺制备的ＺｒＯ２－ＳｎＯ２薄膜的气敏性能数据，提出了常温下ＳｎＯ２（ＺｒＯ２）薄膜对Ｈ２Ｓ的气敏机理模型。根据此模型所得定量分析结果与实验结果一致。     

水热法制备纳米二氧化锆粉体

二氧化锆纳米粉体是制造高科技氧化锆系陶瓷的重要原材料。纳米粉体的制备方法有很多种，但由于水热法可以控制微粉的粒径、形态、结晶度和组成，所以水热法是目前生产纳米粉体方法中最具发展潜力的工艺方法之一。国内外对水热法的研究已有相当进展。并正向工业化迈进。对目前国际上出现的应用于制备纳米二氧化锆系粉体的各种水热方法进行了介绍，着重介绍了制备过程中应用的各种新技术。并展望了水热法的发展前景。