水泥熟料矿物X射线定量分析的重叠峰—自清洗法

本文叙述X射线复相定量分析的重叠峰—自清洗法,讨论了方程组解的稳定性,得出正确选择衍射峰原则。用此方法对水泥熟料矿物作定量分析,结果令人满意。     

INVESTIGATIONS ON THE INTERFACIAL ZONE BETWEEN AGGREGATE AND PASTE OF PORTLAND CEMENT

The composition and structure of theinterfacial zone between aggregate and paste ofportland cement as well as the orientationcoefficient of portlandite (Icn) werepreliminarily studied by XRD and SEMmethods.The main products in the zone are C-S-H gel,portlandite,AFt and pores,micro-cracks as well as unhydrated portlandcement clinker particles.Potlandite not onlygrows well but exists in orientating forms,andnear the interface it exists in a state parallel tothe surface of aggregate by its(001)latticeplane.Icn rises with the increase of cementwater ratio(w/c)and the development of thecement hydration.The higher the w/c,themore the pores and micro-cracks in thezone,w/c bears an exact relation to the decreaseof bond strength.Icn is decreased when 5.0%silica fume is added to cement.Bond strengthsat early ages are reduced by adding 0.5% FDN(one kind of water-reducing admixture)due tothe retarded hydration of cement,but they willincrease continually and become greater than those of other samples after 28 days.     

THE SUPERPOSING PEAKS-AUTOFLUSHING METHOD FOR QUANTITATIVE ANALYSIS OF CEMENT CLINKER MINERALS BY XRD

The superposing peaks-autoflushing method forquantitative multicomponent analysis by XRD has beendescribed in this paper.The rules for selectingdiffraction peaks are given by discussion on thestability of matrix solusion.The practical quan-titative analyses of cement cinker minerals arecarried out by this method and a quite satisfactoryresult is drawn.     

Ce-TZP 陶瓷人工关节材料的研究

研究了用做人工关节材料的一种ＺｒＯ２增韧陶瓷Ｃｅ－ＴＺＰ陶瓷，藉以进一步研制性能优于其它陶瓷的人工关节。用ＸＲＤ、ＳＥＭ、ＯＭ分析了材料的矿物组成和微观结构。测定了材料的性能，结果表明：在１６５０℃烧成的１２ｍｏｌ％Ｃｅ－ＴＺＰ陶瓷材料性能最佳，断裂韧性为１１．１１８０ＭＰａ·ｍ１／２，抗弯强度为５１２．９５ＭＰａ。初步探讨了材料的成分、烧成温度、微观结构与性能的关系。本文还研究了用于Ｃｅ－ＴＺＰ陶瓷人工关节柄部的Ｚ－Ｈ多孔涂层材料。     

黑色软质粘土的组成分析及其使用特点

本文通过对几种粘土的化学组成和矿相分析比较，探讨粘土矿物组成与宏观特性的相互关系，及其在陶瓷生产中使用的可能性。     

X光定量分析在高岭石选矿过程中的应用

对湖南界牌高岭石提纯样品进行X光检测，粗矿样中主要含高岭石，少量石英、长石和白云母；精矿样品中有高岭石和石英。采用背压法制样，消除择优取向带来的误差．用直接对比法对精矿样品进行含量测定，其测试效果令人满意，说明X光定量分析对于较强择优取向的粘土矿物同样可行。     

RELATION BETWEEN THE ORDERING PARAMETERS AND FORMING PRESSURE IN AINi_3

The degree of ordering and ordered domainsize in solid solution AlNi_3 prepared by SHS have been deter-mined with XRD.The results indicate that the greater the form-ing pressure on the raw materials,the higher the degree of or-dering,the larger the ordered domain size.     

无水氟石膏砖的研究

砌块在我国虽然得到了长足的发展 ,但市场上低层民用建筑因受成本、造价的限制 ,仍以砖混结构为主 ,限制了各类砌块的使用。为寻找新的制砖原料 ,在性能与成本上能与粘土砖抗衡 ,我们研制开发了利用工业废料无水氟石膏生产实心砖 ,其有关性能指标均达到或超过国家有关标准。1　无水氟石膏砖的生产1.1　原料及处理无水氟石膏 :化工厂生产氢氟酸的副产品。新生无水氟石膏中有残余的Ｈ2 ＳＯ4 、ＨＦ及少量萤石 ,过 40目筛备用。生石灰 :其有效ＣａＯ不小于 80 %。主要用来中和氟石膏中多余的酸 ,同时过量的ＣａＯ对无水氟石膏有激发作用。磨细…     

Na_2O-CaO-2P_2O_5玻璃的分相与析晶

借助扫描电镜、X-射线衍射、透射电镜等手段,对Na_2O-CaO-2P_2O_5玻璃的结构与相变的关系进行了研究。研究结果表明:磷酸盐玻璃的分相和析晶与热处理的时间、温度有关,热处理的时间或温度不同,析晶与分析可以相互转化,适当的热处理温度和时间,有利于控制生物玻璃的活性。     

TCP－HA－BG多孔复合生物陶瓷降解性能研究

从物理化学、物质结构、热力学、断裂力学等观点出发，远用原子吸收光谱电子计算机图象分析仪等手段，考察了该系统复合陶瓷的体外静、动态溶解性能及动物体内降解性能，分析了影响材料降解能力的各种内在及外界因素。得出材料的降解机理主要是液体介导过程。