CaZr4—xTix（PO4）6（CZTP）的热膨胀

探讨了ＣａＺｒ４－ｘＴｉｘ（ＰＯ４）６（ＣＺＴＰ）离子置换与热膨胀的关系，随着Ｘ的增加，晶格参数ａ和ｃ减小，热膨胀系数αａ由负值变为正值，其平均的晶格膨胀系数大大增加，因而明显增大了ＣＺＴＰ系更的热膨胀系数。     

K2xM1—xZr4（PO4）6（M=Sr,Ba）系统的热学和电学性能

用固相反应法合成了Ｋ２ｘＭ１－ｘＺｒ４（ＰＯ４）６（Ｍ＝＝Ｓｒ，Ｂａ）固溶体。用逐步推最小二乘法对固溶体各组成的高温Ｘ射线线条进行指化，精确计算了晶格常数随温度的变化，并由此计算轴向膨胀系数ａａ和ａｃ，所得结果和用顶杆法测定的热膨胀系数相吻合。用复数阻抗谱法测定了固溶体的电导率随温度及组成的变化。     

（Ca,Mg,Sr）Zr4（PO4）6三元系统的热膨胀

研究了M1位三元NZP陶瓷中CSZP、CMZP及SMZP三个二元组成的热膨胀，确定了组成三角形中的低膨胀区域。     

K_（2x）M_（1－x）Zr_4（PO_4）_6（M＝Sr，Ba）系统的热学和

用固相反应法合成了Ｋ２ｘＭ１－ｘＺｒ４（ＰＯ４）６（Ｍ＝Ｓｒ，Ｂａ）固溶体。用逐步推进的最小二乘法对固溶体各组成的高温Ｘ射线衍射线条进行指标化，精确计算了晶格常数目温度的变化，并由此计算轴向膨胀系数αａ和αｃ，所得结果和用顶杆法测定的热膨胀系数相吻合。用复数阻抗谱法测定了固溶体的电导率随温度及组成的变化。     

Cd（SxSel-x）ZrSiO4色料在陶瓷釉中的应用

本文实验了1240～1260℃烧成的Cd（SxSe1-x）ZrSiO4系大红釉的基本组成；确定了配制大红釉中色料的用量；探讨了釉料组成及工艺参数对呈色的影响。     

A1N陶瓷中的晶格缺陷

用透射电镜观察不同热导率的Ａ１Ｎ陶瓷中存在的晶格缺陷。Ａ１Ｎ陶瓷中的晶格缺陷主要以位错线形式呈现，分布不均匀，大多集中在晶界处，一些晶粒中存在反相畴界。热导率不同的试样其缺陷密度明显不同。氧杂质进入Ａ１Ｎ晶格并形成铝空位是产生晶格缺陷的主要原因，也对晶格参数有显著影响。     

湿化学法制备微晶（Y,Mg）—PSZ／MgAl2O4陶瓷的研究

研究了用湿化学法制备Ｙ２Ｏ３－ＭｇＯ－ＺｒＯ２－Ａｌ２Ｏ３四元系超细粉的工艺技术，探讨了包裹沉和包裹沉淀－乙酸镁混合两种制备工艺组成对微晶ＰＳＺ材料结构、性能的影响。经１１００℃适当时间的热处理获得了在ｃ－ＺｒＯ２中具有ｔ－ＺｒＯ２梭形析出体的微晶ＰＳＺ复相陶瓷，其室温强度达８００ＭＰａ，断裂韧笥在１４ＭＰａ，Ｍ＾１／２左右，１０００℃下高温强度可达４５８ＭＰａ。     

陶瓷内墙釉面砖坯釉组成浅析（三）

陶瓷内墙釉面砖坯釉组成浅析（三）范文标（淄博齐鲁建陶厂,淄博２５５０８６）２．２釉的组成分析内墙釉面砖的面釉,不论乳浊釉、无光釉、透明釉,其烧成温度均在１０５０℃左右。釉的组成对其性能有着重要的影响,特别是ＳｉＯ２的含量及其与Ａｌ２Ｏ３,碱组份的比值...     

低热膨胀KZr2（PO4）3陶瓷

1、绪言 KZr_2(PO_4)_3[KZP]晶体的热膨胀,a轴为负值,c轴为正值,二者平均几乎为零。因此,由这种晶体组成的陶瓷,具有非常优越的热稳定性。本文主要研究KZP晶体各轴的详细热膨胀及其热稳定性,用于致密化的烧结助剂,同时也对其与锆氧的复合作一探讨。     

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。     

NZP陶瓷研究进展

本文综述了ＮＺＰ族陶瓷晶体化学，组成，粉体制备，热学性质等方面的研究进展，指出了目前存在的问题及发展趋势。     

NaZr2P3O12族磷酸盐陶瓷材料的研究进展及其应用

本文概述了NaZr2P3O12族磷酸盐陶瓷材料的晶体结构、组成、合成方法、烧结性能、热学和力学性能等方面的研究进展,并着重展望了其应用前景和发展趋势.     

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。     

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     

Synthesis and Thermal Expansion Properties of the Ca(1+x)/2Sr(1+x)/2Zr4P6−2xSi2xO24 System

Ca_{(1+ x )/2}Sr_{(1+ x )/2}Zr₄P_{6−2 x} Si_{2 x} O₂₄( x ≤ 0.37) compositions, which belong to the [NZP] family of low-thermal-expansion materials, were synthesized using the solid-state reaction method. The lattice thermal expansion of members of this system was determined up to 1000°C by high-temperature X-ray diffractometry. The bulk thermal expansion and the microcracking during cooling also were investigated. These properties depended on the composition, on the synthesis method, and on the sintering conditions.     

Sodium zirconium phosphate-based glass-ceramics as potential wasteforms for the immobilization of nuclear wastes

A comprehensive study on the development of sodium zirconium phosphate (NZP)-based glass-ceramic composites as potential wasteforms for the immobilization of nuclear wastes is reported. Two complementary waste treatment routes, the ex situ and in situ crystallisation of NZP with a sodium aluminoborosilicate glass, were investigated with various processing conditions including sintering temperature, cooling rate and NZP to glass ratios. While the ex situ route with mixing of pre-made NZP and glass is a robust and reliable means of producing the glass-ceramic composites, the in situ crystallisation of NZP from an amorphous NZP precursor is a more realistic processing route. The formation of ZrO₂ as a minor phase was observed especially for high NZP to glass ratios due to the solubility difference between Zr and P oxides in glass. The addition of extra phosphate can overcome this and yield glass-ceramic composites with appropriate NZP stoichiometry. Overall, the NZP glass-ceramic system is versatile offering multiple processing options for nuclear waste management.     

Low Temperature Synthesis of Porous NZP Ceramics

Porous phase-pure NaZr₂(PO₄)₃ monoliths were synthesized at 850°C from gels that precipitated as a consequence of mixing water-soluble precursors. The sintering temperature was limited to 850°C to permit densification in a range where NZP exhibits a low coefficient of thermal expansion. Attempts to maximize mechanical properties were made by both physical and chemical means. Particulate hydroxyapatite (HAp) was physically blended with the precipitated gels to template the crystallization of NZP. Copper nitrate was dissolved into solution as a sintering aid to stimulate liquid-phase sintering during firing. NZP made without these additives attained a specific surface area of 30 m²/g. The addition of HAp reduced the internal surface area to 5 m²/g. X-ray diffraction and scanning electron microscopy did not detect the presence of HAp in the fired samples, indicating it had been consumed during firing. Copper nitrate decomposed to CuO and its presence as a sintering aid resulted in enhanced densification and greater strengths. The presence of 5% CuO (as copper nitrate) together with 5% HAp resulted in a 40% volume shrinkage during firing. The tensile strength attained for this composition was 20 MPa as compared with that of approximately 8 MPa for the compositions fired without additives.     

Microwave-sintering preparation and densification behavior of sodium zirconium phosphate ceramics with ZnO additive

The dense NaZr₂(PO₄)₃ (NZP) ceramics were successfully prepared by a microwave sintering process with x wt.% ZnO as a sintering aid (where x = 0, 0.5, 1.0, 2.0 and 3.0). The effects of ZnO additive on the crystal structure, microstructure and sintering behavior of as-prepared NZP ceramics were systematically investigated. The single NZP phase can be achieved in the wide temperature range of 900–1200 °C holding for 2 h by microwave-sintering technology. The addition of ZnO sintering aid would not noticeably change the crystal structure of NZP. Importantly, ZnO additive significantly promoted the densification and 1.0 wt% ZnO-added sample possessed the maximum relative density of 96.5% after sintering at 1100 °C, considerably higher than that of pure NZP sample. Besides, the Vickers hardness of the above sample could attain near 800 MPa, which is about four times as hard as the pure NZP ceramics without ZnO additive. It was suggested that the combination of microwave sintering with appropriate addition of ZnO sintering aid would provide a convenient and efficient method for rapid fabrication of dense NZP ceramics.     

NZP族磷酸盐材料对Pb2+的吸附研究

利用NZP族磷酸盐材料结构上的特点,将其作为一种新型吸附材料应用于吸附溶液中的Pb^2＋,研究了静态吸附容量、吸附动力学及吸附容量与静置时间的关系。结果证明NZP族磷酸盐材料对Pb^2＋离子确有明显的吸附作用,且吸附动力学符合Langmuir等温线。     

NZP族陶瓷材料的合成与烧结

本文回顾了磷酸锆钠族(NZP)陶瓷材料的合成和烧结,并进一步指出了合成NZP粉体中存在的问题和促进NZP陶瓷致密化的万法。