EfSects of temperature on the stability of aqueous alumina slurry dispersed with polyelectrolyte have been studied. An adsorption experiment was performed to investigate the mechanism of the temperature-dependent stability in the system. Viscosity measurement and sedimentation results show that temperature dramatically aflects the stability of slurry. The adsorption of dispersant increases with increasing temperature and the stability is strongly dependent on the adsorption state. As temperature increases, more dispersant is needed to reach a new adsorption equilibrium. In low initial concentration of dispersant region, the dispersant is insufJicient to satisfy the increasing adsorption as temperature increases. Consequently, the apparent 'coverage'declines and flocculation takes place. A stability map is established to indicate the efSect of the temperature on the stabi1ii.y of this system.

Well-aligned zinc oxide whiskers with high density were successfully prepared on amorphous substrate by atmospheric metal-organic chemical vapor deposition. X-ray diffraction measurements indicated that the ZnO whiskers were wurtzite crystal structure, andgrew non-epitaxially on glass substrate along ZnO [0001] direction. ZnO whiskers with uniform distributions in their diameters and lengths grew vertically on the amorphous substrate. The effects of deposition conditions and the growth mechanism of ZnO whiskers by MOCVD were discussed. Both the growth habit andthe growth circumstance significantly affectedthe morphology of the whiskers.

The effects of S impurities, both interstitial and substitutional, on adhesions at Al2O3/Ni and ZrO2/Ni interfaces were investigated with the first-principles method. The effects of S impurities on the adhesion of the Ni/Al2O3 interfaces are quite obvious, and changes in equilibrium adhesive energies evidently range with the type of impurities. The effects of Simpurities on the adhesion of the Ni/ZrO2 interface are very slight. For the two interfaces considered, both interstitial and substitutional S impurities will increase their equilibrium interfacial distances.

根据多层吸波涂层材料电磁波反射系数的传输线理论，通过建立涂层材料的介电及磁性参数数据库，采用多目标规划法，进行各层材料的选择及层厚的优化设计，为多层隐身涂层材料的研制提供强有力的设计工具。该研究开发的软件具有吸波材料参数数据库、全面搜索优化、部分选定优化、特定结构反射系数计算等功能。最大可分5个波段设定不同的设计指标,最大设计层数为6层。

采用湿化学法合成了前驱物ZrMo2O7（OH）2（H2O）2，并用SEM观察了不同回流时间所得晶粒形貌，结果显示经过较短时间的回流（12h）就能获得一定尺寸的晶粒并趋于稳定。观察了不同回流温度所得前驱物晶粒形貌，其晶粒呈长方体棒状形态，XRD结果证明结晶度随回流温度的升高而提高；探讨了不同回流温度下所获得的前驱物ZrMo2O7（OH）2（H2O）2 对合成立方ZrMo2O8的影响。结果表明，100℃回流所得前驱物经热处理后可获得纯立方相ZrMo2O8。此外，对前驱物的热处理温度选择在400℃左右有利于纯立方相的获得。

0-3型压电陶瓷/聚合物复合材料具有单相压电陶瓷或聚合物所不具备的良好的综合性能，因此引起了人们广泛的兴趣和研究。本文综述了0-3型压电复合材料的制备工艺及相应复合材料的压电性能，重点介绍了水解-聚合法、凝聚-胶体法、溶液聚合法3种新型制备工艺，简要分析各种制备工艺的优缺点，为压电陶瓷/聚合物复合材料（甚至是纳米级压电复合材料）的进一步研究、开发和应用提供依据。

To study the effect of binder distribution in a powder granule on the internal structure of the compacts, the internal structure of green bodies with various PVA contents was examined by a liquid immersion technique and SEM. By the liquid immersion technique, a dark three-dimensional network was found in the as-compacted green bodies, but disappeared after binder removal. This result shows that the structure corresponds to binder-rich surface layer of the spray-dried granule. Detailed examination on green bodies after the binder removal showed that the low density region was present at the boundaries of granules and was related to the binder-rich region. The voids between granules increase with increasing the PVA content.

针对谐振型压电陶瓷驱动器的动态非线性，建立了一个数学模型来定量描述驱动器输入与输出的非线性关系，借此可以定量地分析其动态非线性的大小；并利用此模型对PZN-2PZT悬臂梁式双晶片弯曲驱动器动态非线性进行了实验分析，实验结果表明此模型对驱动器动态非线性定量分析效果良好。

本研究是在大量的实验数据的基础上，通过建立物理、数学模型，用计算机计算模拟弯曲型驱动器的振动模式，得到了驱动器受激时的振动状况，如各阶谐振频率和各阶谐振振型等。另外还给出了各阶谐振频率的拟合经验公式。最后，计算模拟并且分析了加轴驱动器振动模态，对加轴的可行性给予了评价。

通过对磷酸铝、磷酸铬及磷酸铝磷酸铬体系进行焙烧实验，测其收缩率、孔隙率，并进行XRD物相分析，研究磷酸铝、磷酸铬及磷酸铝一磷酸铬体系烧结性能。研究结果表明，含磷酸铝70%～80%的磷酸铝-磷酸铬混合体系在1300～1400℃可烧结。