锆基色料在不同粒度分布熔块釉中的对比试验

本文研究了低温透明熔块釉不同粒度分布对锆基色料发色的影响,通过对比试验得出了适合锆基色料发色的粒度范围,并简要考察了影响锆基色料在熔块釉中发色的因素。     

炻瓷高钡透明釉中色料发色研究

使用中温高钡透明釉为基础釉,本文研究了陶瓷色料在该炻瓷釉中的发色情况。经1200℃烧成后,实验结果表明：锆系色料和锡基色料发色正常;含钴的蓝色料发色特别艳丽;其余色料则或者釉面起泡,或者褪色。     

低温快烧熔块釉粒度分布对铬锡红系列色料发色的影响

研究了低温快烧透明熔块釉的粒度分布对铬锡红系列色料发色的影响。考察了适合铬锡红系列色料发色的粒度范围，研究了影响铬锡红系列色料在低温快烧熔块釉中发色的因素。     

颗粒度对陶瓷釉用色料发色的影响研究

色料的发色与诸多因素有关,其中色料粒度的大小与色料的发色有着较大的影响,大部分色料在某一粒度范围发色较佳。本文选取三种常用釉用色料,分别是Cr-Fe-Zn釉用黄棕色料、Zr-Co-Ni-Si釉用灰色色料、Cr-Fe-Ni-Co釉用钴黑色料,运用平行对比实验观察色料在不同粒度时的发色情况,发色实验分别使用透明釉和锆乳白釉两种不同基础釉进行。结果表明,色料粒度大小不同时在两种不同的基础釉中,发色变化趋势有所差异。     

粒度对镨黄色料在透明釉中发色的影响

研究了不同粒度分布的镨黄色料在不同釉中的发色。通过在高、中、低温透明釉的呈色状况及色度对比,研究了粒度对镨黄色料发色的影响．得出了适合镨黄色料发色的粒度范围。     

硅酸锆基三元色料的混色问题研究

陶瓷色料混色能够在一定程度上解决高温陶瓷色料的色彩匮乏问题,但混色问题缺乏系统的研究。本文选择包裹红、锆镨黄、钒锆蓝三种硅酸锆基色料进行混色问题研究。结果表明:色料的混色能够丰富高温颜色的种类。混色机理是三种色料反射不同波长的可见光后产生的协同作用,且对混色的影响是相互独立的。包裹红色料会使混色的L*值减小,a*值增大;锆镨黄色料会使混色的L*值和b*值减小,a*值增大;钒锆蓝色料会使混色的a*值和b*值减小。     

共沉淀法制备钒锆蓝陶瓷色料的影响因素研究

固相法合成钒锆蓝陶瓷色料因工艺流程简单,易操作而受到广泛应用。但存在原料物理混合不均、反应活性低导致的煅烧温度高,产物粒度大、晶粒团聚严重等问题,提高了产品的生产和后期处理成本。为探索新的钒锆蓝色料制备工艺并研究在新工艺下相关的影响因素,本文采用液相的共沉淀法,以氧氯化锆和正硅酸乙酯为原料,五氧化二钒为着色剂先制备出钒锆蓝陶瓷色料前驱体,然后经煅烧制得了钒锆蓝陶瓷色料。着重研究了着色剂和矿化剂对产物发色的影响,并采用XRD和SEM等手段进行表征。最终,在钒掺量0.2mol/mol ZrSiO_4,矿化剂NaF的含量8wt%,煅烧温度950℃和保温10 min的条件下,制备出了发色好的钒锆蓝色料,矿化剂NH_4Cl的过多加入对产物的发色有不利影响。     

陶瓷色料在高铅熔块釉中的应用试验

在釉烧温度为1000～1050℃低温范围内,含铅釉乃至高铅釉仍占重要地位并被广泛应用。因此,笔者使用含铅量为40%左右的熔块釉为基础釉,全面考察了各种常用陶瓷色料的发色情况。1050℃烧成后的结果表明:除了无钴黑色料、铬锡红色料发色不好外,其余色料均正常发色或发色更佳。     

探究矿化剂种类对镨黄色料发色的影响

笔者基于本公司生产条件,以探究为目的系统地对比了矿化剂对锆镨黄色料发色的影响,对标现有产品,得到了发色优于现有生产水平的镨黄色料。     

电熔氧化锆生产锆铁红色料的发色效果及应用

本文简要对比特种电熔锆与普通电熔锆、化学锆之间的物理化学性质的差异,并研究它们在不同条件下,制成的锆铁红色料的发色情况。结果表明:采用特种电熔锆生产的锆铁红色料,其发色效果及耐温性能等指标都达到甚至超过化学锆的标准,在工业化生产应用中取得了较好的效果。     

镁质无光釉配料的改进

阐述了镁质无光釉配料的改进方案,用含5%～30%MgO的熔块与镁质原料和其他釉原料配料,制备无光釉可获得饰面状态良好、无针孔缺陷的无光釉面。     

陶瓷乳浊剂硅酸锆的研制

本文论述了陶瓷乳浊硅酸锆超细粉的质量指标,以及影响遮盖力的几个主要因素。比较了不同方法生产硅酸锆的优缺点。     

Effect of zirconia addition amount in glaze on mechanical properties of porcelain slabs

Applying toughened glaze layer on porcelain slabs can improve the fracture toughness of slabs and greatly reduce the production cost. In this study, porcelain slabs glaze with high toughness was fabricated by the processes of impregnation glazing and single firing method, using opaque frits, kaolin clay as the main raw materials, zirconia as an additive, and the effect of the addition amount of zirconia in glaze on fracture toughness of porcelain slabs was investigated. The results showed that the type and content of crystal phase of the glaze were greatly influenced by the addition amount of zirconia. Meanwhile, compared with the base glaze, the hardness and fracture toughness of the sample with zirconia glaze were significantly improved. Porcelain slabs with 10 wt% zirconia in glaze, sintering at 1200 °C, exhibited higher quality glaze and outstanding properties, including a water absorption of 1.95%, a Vickers hardness of 6.36 GPa, and a fracture toughness of 2.71 MPa m^1/2. The toughening mechanism of the glaze layer was as follows: a large number of zirconium silicate grains with high hardness were generated by the reaction of added zirconia with silica in the glass phase, which increased the content of crystal phase and then prevented the propagation of cracks; moreover during the martensitic transformation of the tetragonal zirconia grains, the volume and shear strain were generated to offset the stress field generated by the crack tip, thus toughening the material.     

关于增韧骨灰瓷的研究

本文以骨灰瓷的传统配方为基础,通过在坯体中添加氧化锆,在釉料中加入氧化锆和锂辉石.而达到提高骨灰瓷的热稳定性及强度、韧性的目的.     

高档瓷用无铅铜蓝花釉的研制

使用无铅熔块釉为基础釉,通过在釉中添加CuO等多种金属氧化物,经试验成功试制出一次施釉的不含铅的铜蓝色花釉,同时分析了影响该无铅铜蓝花釉呈色的因素。     

硅酸锆的超细粉碎及其对釉料遮盖力的影响

本文阐述了硅酸锆在釉料中产生乳浊的机理．比较了国内外几种不同粒度分布的硅酸锆在釉层中的遮盖力，并探讨了使用国产设备粉碎硅酸锆的优缺点。     

影响陶瓷耐热锅热稳定性的因素

从工艺技术角度分析了影响陶瓷耐热锅热稳定性的因素;探讨了材料组成、原料细度、坯釉结合性、烧成制度对产品热稳定性的影响。并结合生产实际提出了改善产品热稳定性的方法和措施。     

釉里红配方与工艺条件的研究

通过实验优选出呈色良好的釉里红色料、面釉、里釉的配方。分析了色料粒度、釉层厚度对釉里红呈色的影响。     

Floor tile glass-ceramic glaze for improvement of glaze surface properties

Simultaneous improvement of surface hardness and glossiness of floor tile glaze, without changing its firing temperature, was the main purpose of the present paper. Thus, various glazes in the system of CaO–MgO–SiO₂–Al₂O₃–ZrO₂ were prepared and their crystallization behaviors within a fast firing cycle were investigated. With increasing amounts of calcium and magnesium oxides to base glass, the optimum glass-ceramic glaze was obtained. The results showed that with increasing of CaO and MgO part weights in frit, the crystallization peak temperature was gradually decreased and the intensities of diopside and zirconium silicate were increased. The comparison of micro hardness for the optimum glass ceramic glaze derived in this work with a traditional one used in floor tile industries indicates an improvement of 21%. It was found that the glaze hardness not only depend on the amount and type of crystalline phases, but also on the residual glass composition. Furthermore, it was observed that the glaze micro hardness is only slightly affected by thermal expansion mismatch of body and glaze.     

EFFECT OF COMPOSITION ON PROPERTIES OF CONE 11 ZIRCONIUM SILICATE-OPACIFIED GLAZES *

Studies were made of the effects of magnesium, calcium, barium, strontium, and zinc oxides on the gloss, texture, and opacity of one-fire, zirconium silicate-opacified glazes at cone 11. The opacity was determined with a Hunter multipurpose reflectometer and the gloss was observed visually. Limits for the various fluxes were determined and a practical base glaze formula was developed.