离子着色铁系瓷釉中铁的穆斯堡尔谱研究

应用穆斯堡尔谱及色度测量等方法研究了随总铁含量和还原程度的改变,ＳｉＯ２－Ａｌ２Ｏ３－Ｎａ２Ｏ离子着色铁系瓷釉中铁的结构行为及其对应的呈色关系。结果表明：Ｆｅ＾２＋离子以四、六两种配位状态同时存在于瓷釉中,随着总铁含量改变,Ｆｅ＾２＋／（Ｆｅｔ＾２＋Ｆｅ＾３＋）、Ｆｅ＾２＋（Ｆｅ＾２＋／Ｆｅ０＾２＋）的值各自保持不变,分别约为０．７４和０．４５。此时,瓷釉呈色不同,但Ｆｅ＾２＋离子中均以４５％的固     

覆铝钢板搪瓷的化学稳定性研究

研究了化学组成与覆铝钢板搪瓷耐酸面碱性能之间的关系,结果表明,当瓷层受Ｈ＾＋侵蚀时,均匀分布在瓷釉网络中的ＴｉＯ２晶体可提高瓷釉层在酸中的过钝电位,阻止Ｈ＾＋与瓷层的化学反应;当受ＯＨ＾－作用时,组成中的ＺｒＯ２首先与ＯＨ＾－生成Ｚｒ（ＯＨ）４,进上步与瓷层表面的硅醇结合形成阻止ＯＨ＾－腐蚀瓷层的保护膜。     

问：在搪瓷生产中如何鉴别瓷釉原料氟硅酸钠？

问：在搪瓷生产中如何鉴别瓷釉原料氟硅酸钠？答：氟硅酸钠（Ｎａ＿２ＳｉＦ＿６）为白色结晶粉末，在水中溶解度较小，呈碱性反应。它居生产瓷釉常用的原料，在外观上易与其它原料混淆，它的鉴别方法有两种：１．生成Ｈ＿２ＳｉＯ＿３试验法反应机理Ｎａ＿２ＳｉＦ＿６的...     

一次搪彩色铸铁瓷釉的研制

本文详尽地分析了一次搪彩色铸铁瓷釉开发研制的可能性和必要性。提出了该类瓷釉在ＴｉＯ２－Ｒ２Ｏ－Ｂ２Ｏ３－ＳｉＯ２系统中的化学组成范围及其相应的各项工艺技术参数，该项研究课题业已申请国家发明专利，专利申请号为：９４１１６２３８．９。     

瓷釉的高温粘度与其组成关系的研究

全面详细地测定了瓷釉在高温下的粘度值,研究了瓷釉组成变化对其高温粘度的影响。实验结果表明：瓷釉的高温粘度随温度的升高而降低,其关系可用ＶＦＧ方程来描述：配方中ＭｇＯ含量的提高使瓷釉的高温粘度升高,而ＳｉＯ２／Ａｌ２Ｏ３比对高温粘度的影响不仅与其值的大小有关,还与许多其它因素有关。     

N,N-二辛基甘氨酸萃取铑的机理

报道了Ｎ，Ｎ－二辛基甘氨酸从盐酸体系中萃取铑的机理．结果表明：铑的萃取率随酸度、氯离子浓度、铑离子浓度的增大而降低．采用斜率法测得萃合物组成为：Ｒ２ＮＣＨ２ＣＯＯＨＨＲｈ（Ｈ２Ｏ）２Ｃｌ４．萃取反应方程式为：Ｒ２ＮＣＨ２ＣＯＯＨ．ＨＣｌ（Ｏ）＋Ｒｈ（Ｈ２Ｏ）２Ｃｌ－４（Ａ）＝Ｒ２ＮＣＨ２ＣＯＯＨ．ＨＲｈ（Ｈ２Ｏ）２Ｃｌ４（Ｏ）＋Ｃｌ     

平板金属件的涂搪方法及其涂搪后的制品

本发明涉及平板的金属件的涂搪方法及其涂搪后的制品，其步骤包括１）．对平板金属件进行预处理；（２）将金属陶瓷瓷釉层涂于经预处理后的一面；（３）在适当的熔化温度下熔融已施涂的金属陶瓷瓷釉层；（４）再在瓷釉层上施涂一层可透气的耐化学腐蚀的漆层。     

硫硒化镉陶瓷釉初探

本文着重探讨了硫硒化镉陶瓷釉的基础配方,通过“基础釉组成保护法”,使着色剂（Ｓｅ,ＣｄＳ）挥发减少到最低程度,而获得满意的红色。通过实验获得了ＳｉＯ２－Ａｌ２Ｏ３－Ｎａ２Ｏ－ＰｂＯ系统的红色陶瓷釉的配方,并对其组分和工艺进行了讨论。认为制造硒镉红陶瓷釉是能实现的,同时使釉料呈色鲜艳、稳定,最高烧成温度可达１１００℃,釉面质量与其它性能都达到了预期的效果。     

原始瓷釉的化学组成及显微结构研究

通过研究我国古代众多原始瓷釉的化学组成和显微结构，进一步肯定了原始瓷釉是在陶器涂层的基础上发展起来的，并将此类釉分为二类：富Ｆｅ２Ｏｅ原始瓷釉及富ＣａＯ原始瓷釉。这两类釉分别是后期黑釉以及青釉发展的基础。早在周代中晚期的富Ｆｅ２Ｏ３原始瓷釉中已存在液－液分相结构，这是目前所发现最早分相釉。     

磺化酞菁镓的二聚现象研究

采用分光光度法研究了磺化酞菁镓的二聚现象；测定了二聚常数Ｋｄ，讨论了ｐＨ值、离子强度、水、温度等因素对Ｋｄ的影响。研究结果表明：磺化酞菁镓的二聚反应可表示成： ２ＳＰｃＧａＯＨ→（ＳＰｃＧａ）２Ｏ＋Ｈ２Ｏ且磺化酞菁镓的二聚常数随着离子强度、磺酸基数目、水的浓度的增加而增加。     

长余辉类陶瓷发光釉的研究现状及展望

论述了长余辉陶瓷发光釉的分类、研究现状、制备方法和工业化应用现状及前景.阐述了其发光机理,指出了传统陶瓷发光釉的的不足,稀土激活硅酸盐类陶瓷发光釉将是未来陶瓷发光釉的主体,并指出了未来陶瓷发光釉研究开发的重点发展方向,展望了此类材料的发展前景.     

Recycling in ceramic glazes of zirconia overspray from thermal barrier coatings manufacturing

Glazed ceramic tiles are the most common building material for floor and wall covering. Glazes are produced from frits. The aim of this work is to make a total or partial replacement of a raw material, zircon, widely used in ceramic tiles manufacturing, with a waste material, in order to prepare ceramic frits. The waste material used in this work, is the overspray zirconia, which is produced during the deposition process by atmospheric plasma spraying (APS) of thermal barrier coatings (TBC) on turbine blades. In particular, a replacement of 100 wt%, 1 wt% and 0.2 wt% of zirconium silicate with zirconia has been studied. Ceramic glazes prepared mixing frits and other raw materials are applied on a single-fired tile. The glazes obtained were characterized with different analytical techniques. This study has revealed that the substitution of zircon with waste zirconia is possible in small percentages due to the presence of small amount of chromophore ions in the overspray zirconia, which tend to colour the glaze.     

Factors affecting glaze transparency of ceramic tiles manufactured by the single firing technique

Transparency is an extremely important optical property of several glazes used in the ceramic tile sector. The present work aimed to identify the causes of loss of transparency presented by some ceramic glazes composed of frits with chemical compositions typical of optically transparent glasses. After identifying the causes of low transparency presented by several ceramic glazes based on microstructural analyses, X-ray diffraction and scanning electron microscopy, attempts were made to increase the transparency of these glazes by altering their chemical compositions. The results suggest that the addition of alumina – through distinct mineral sources – may be an interesting alternative to prevent the crystallization of calcium silicates, which reduce the transparency of glazes used in the ceramic tile sector.     

红坯陶瓷砖底釉的开发应用

以一次烧成后的陶瓷废渣为基料开发出了一种红坯陶瓷饰面砖用的底釉，将这种底釉施在砖坯上，不仅能减少面釉的消耗量，而且还能改善瓷砖和釉面的质量。     

USE OF EUTECTICS AS GLAZES1

The properties of the high silica eutectics of some of the common ternary systems are given consideration in suggesting them for use as glazes on ceramic bodies.     

Zircon-free frits suitable for single fast-firing opaque wall tile glazes and their industrial productions

Wall tile glazes with a smooth surface texture, high glossiness, and whiteness are usually based on zirconium containing frits. However, these frits are quite expensive and therefore, there have recently been certain attempts to lower the production cost such as taking suitable glass–ceramic glaze systems into an account. With the present work, the frit-based glaze compositions belonging to the K₂O–MgO–CaO–ZnO–Al₂O₃–B₂O₃–SiO₂ glass–ceramic system were studied to prepare newly synthesized wall tile glazes for industrial single fast-firing. The design of a glass–ceramic glaze for this type of tiles should ensure that the selected frit precursor is technically and commercially compatible with the manufacturing conditions generally used in the production of glazed ceramic wall tiles. The aim of the study is to develop zircon-free, frit-based, glossy opaque glass–ceramic glazes for wall tiles by optimizing the CaO/MgO and adjusting the Al₂O₃/alkali ratios in the starting frit compositions. Frit production, glaze preparation, application, and single fast-firing of wall tiles were, first of all, conducted under laboratory working conditions and then, successful recipes were adapted to the relevant industry. The frit crystallization capability and crystallization temperature range were determined by differential thermal analysis (DTA). Thermal expansion coefficient values of glazes were determined by a dilatometer. Characterization of single fast-fired glass–ceramic glazes was made by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) techniques. Colour and gloss analyses of the final glazes were measured with a spectrophotometer and a gloss meter, respectively.     

Preparation of glass–ceramic glazes for fast firing applications by CaF2 substitution with B2O3 in the CaO–CaF2–Al2O3–SiO2 system

The present work aims to obtain glass–ceramic glazes for floor tile applications. In this regard, CaF₂ was gradually replaced by B₂O₃ in the glass compositions belonging to the CaO–CaF₂–Al₂O₃–SiO₂ system. This substitution led to a noticeable decrease of crystallization peak temperatures and to an alteration of the crystallization trend. In the B₂O₃ bearing glazes, anorthite and gehlenite were identified as the major and minor crystalline phases, respectively. During concurrent crystallization and sintering based on the fast firing program, glass–ceramic glazes containing 9 weight parts of fluorine and 12 weight parts of boron oxide showed the most desirable sinterability. The optimized glass–ceramic glazes offered acceptable micro-hardness, whiteness and thermal expansion behavior after fast firing heat treatment.     

钒—锆蓝陶瓷色料的制备及其性能

本文论述了锆基陶瓷色料的制备工艺过程,矿化剂的作用机理以及着色离子在ＺｒＳｉＯ４晶体结构中的价态、取位。为获得性能稳定、呈色效果好的锆基陶瓷色料提供理论指导。     

无铅低温乳浊釉研究现状与展望

近年来,由于国家绿色环保政策的日益严苛,陶瓷行业的节能减排成为重要的研究课题.可用于建筑卫生陶瓷及低品位原料日用陶瓷坯体的乳浊釉,尤其是无铅低温乳浊釉的研究越来越受到重视,同时也取得了一些研究结果.本文综述了无铅低温乳浊釉乳浊机理,介绍了其分类和研究现状,并分析了当前无铅低温乳浊釉存在的问题,指出其未来的主要研究方向.     

澳洲锂辉石在不同陶瓷釉料中的应用

澳洲锂辉石在陶瓷釉料中的应用已越来越广泛，本文介绍了锂辉石在几种主要陶瓷釉料中的具体应用。