[NZP]陶瓷零膨胀性能的设计

研究了「ＮＺＰ」材料的零膨胀性能，并尝试对零膨胀的「ＮＺＰ」陶瓷作了设计，从晶体结构、原子复合、各向异性、显微结构和复合材料等方面提出了设计思路。     

Ca_(0.6)Mg_(0.4)Zr_4(PO_4)_6低膨胀陶瓷的制备与烧结

采用分步沉淀法合成了Ca_(0.6)Mg_(o.4)Zr_4(PO_4)_6单相粉体。CMZP陶瓷的烧结主要取决于温度和烧结助剂,最大密度达到理论值的98％,借助SEM观察了表面及断口形貌,EDX作元素的半定量分析在1300℃试样表面发生了分解。     

NZP陶瓷增压器蜗壳隔热管的研制

NZP陶瓷具有低膨胀、低导热、高抗热震性，是用于隔热抗热震场合的理想材料，本文采用沉淀法合成CM粉料、等静压成型、分段烧成制度，成功地制备出NZP陶瓷增压器蜗壳隔热管。     

Ca1-xSrxSn4(PO4)6粉料的制备及膨胀特性

介绍了NZP晶体化学结构、组成、粉料制备、应用等方面的研究进展 ,并指出目前存在的问题。根据NZP晶体化学近零膨胀的特性 ,设计出 2个新的组成———SSP ,CSP及 3种固溶体。采用水热法和共沉淀法合成物相 ,并对粉体进行粒度分析 ,X ray衍射物相鉴定 ,IR结构分析 ,SEM形貌观察 ,测量了CSP/SSP热膨胀系数及力学强度     

Thermal expansion behavior of KZr2P3O12-SrZr4P6O24 ceramics

The relationships between thermal expansion and density,microcracking,stress and phase transition in K1/2Sr1/4Zr2P3O12(K2) and with K2 containing 2 mass fraction of MgO (K2M2) have been studied.The materials showed a little thermal expansion anisotropy,hysteresis,and microcracking Thermal shock-induced cracks resulted in a decrease of the coefficient of thermal expansion.Phase transition caused crack healing resulting in a decrease in specimen size.     

（Ca,Mg,Sr）Zr4（PO4）6三元系统的相分析与晶格参数

研究了Ｍ１位三元ＮＺＰ陶瓷组成对物相及晶格参数的影响，探讨了热膨胀有重要作用的组成与晶格参数之间的关系。     

SrSn_4P_6O_(24)粉料的合成

本研究的目的在于根据NZP[NaZr2 (PO4) 3]晶体化学特性 ,设计出一新的NZP化合物SrSn4P6 O2 4(SSP) ,为二元及多元NZP热膨胀调整提供新的单元组成 .为此 ,本研究采用固相法、共沉淀法及水热法进行了合成实验 ,并做了XRD ,SEM ,TEM及IR光谱检测 .结果表明 :3种方法都能合成SSP ,其中以共沉淀法合成的物相最纯 ,固相法合成的SSP的X射线衍射强度最大 .粉料的颗粒形貌取决于合成条件及合成方法 ,水热法在使用磷酸作矿化剂时获得了单分布形状为正六边形的颗粒 ,物相为单斜相 .使用水和氢氧化钠为矿化剂时 ,颗粒为近似方形及圆形 ,均为NZP相     

NZP陶瓷组成与显微结构对其导热系数的影响

研究了化学组成及显微结构对Ｍ１位ＮＺＰ陶瓷导热系数的影响，随着Ｍ１位离子种类数的增加，ＮＺＰ陶瓷的导热和降低。ＣＭＳ的导热系数随着气孔率的增加而降低。     

Mechanical and thermal expansion studies on Ca0.5Sr0.5Zr4-xTixP6O24 ceramics

Ca_0.5Sr_0.5Zr_4-xTi_xP₆O₂₄ (x?=?0?0.2) ceramics belonging to the NZP family were prepared and dense ceramics with no microcracks were obtained. All of the ceramic samples were still composed of the typical NZP structure with a small amount of Ti⁴⁺ substitution for Zr⁴⁺. The mechanical and thermal expansion properties of the ceramics were characterized and the result showed that the flexural strength monotonically increased to 66.5?MPa. The thermal expansion coefficient varied from 1.8 to 3.4?×?10^?6/°C with Ti⁴⁺ content increasing. Thus, it was clear that the substitution of Ti⁴⁺ for Zr⁴⁺ had obvious effects on the sinterability, mechanical and thermal expansion properties of Ca_0.5Sr_0.5Zr_4-xTi_xP₆O₂₄ ceramics, which were discussed in detail.     

Ca0.6Mg0.4Zr4P6O24陶瓷的烧结

本文研究了ZnO烧结助剂对Ca0.6Mg0.4Zr4P6O24陶瓷烧结行为的影响.ZnO的引入导致Ca0.6Mg0.4Zr4P6O24陶瓷的液相烧结.引入3wt%ZnO,在1100℃保温1.5小时烧结,Ca0.6Mg0.4Zr4P6O24陶瓷的相对密度可达99.1%.ZnO引入量过多或烧结时间过长,将导致二次再结晶,抑制Ca0.6Mg0.4Zr4P6O24陶瓷的致密化.