油滴釉的仿制实验

本文以宋代油滴釉的化学组成参考依据,采用不同原料进行油釉的仿制实验。实验证明,油滴釉的形成首先取决于釉料的化学组成,然而,施釉厚度和烧成制度等更是决定油滴斑效果的重要因素。     

EFFECT OF GLAZE FILM ON PROPERTIES OF A VITREOUS CHINA BODY*

Individual thermal-expansion measurements in conjunction with the tuning fork and ring glaze-fit tests have been used to establish the relation between glaze stress and its effect on the physical properties of a glazed vitreous body.     

CONE 01 GLAZES FOR LOW-TEMPERATURE VITREOUS WARE*

The production of two-fired vitreous ware using a nepheline syenite body biscuited at cone 4 requires a glaze of low expansion maturing at cone 01 or below. Such a glaze can be produced using not more than 0.05 KNaO and up to 0.19 MgO in the empirical formula if 70 to 80% of the glaze batch is fritted. Such glazed ware showed good resistance to crazing, and modulus of rupture and scratch-hardness values were equal to commercial hotel china.     

Acoustic properties of cellular vitreous carbon foams

The present work deals with acoustic properties of highly porous rigid foams derived from flavonoid tannins. Such cellular solids derived from renewable resources were investigated before and after pyrolysis, the latter leading to cellular, vitreous, carbon foams. It is demonstrated here that these lightweight materials have a high air flow resistivity, which depends on the density of the foam. Vitreous carbon foams, especially, have rather low performances for sound absorption. Using a simple model, their sound absorption coefficients were predicted and found to be in very good agreement with measurements in all the investigated frequency range, 50–4300 Hz. However, we have shown that carbon foams are very appropriate materials to apply the double porosity concept since they can produce a high permeability contrast. This paper shows how vitreous carbon foams can become excellent sound-absorbing materials in a targeted frequency range by using the double porosity concept.     

粉煤灰釉面砖的试验研究

以粉煤灰为主要原料，以其它硅酸盐原料做辅助料，试制出性能优良的陶瓷釉面砖。本文主要讨论了粉煤灰掺加量、烧成温度和气氛等工艺因素对釉面砖性能的影响，并确定了最佳掺灰量和生产工艺。     

低温素烧,高温釉烧炻质水晶釉面砖的研制

针对传统的高温素烧、低温釉烧(二次烧成)和釉面砖生产工艺在生产水晶釉面砖中存在的问题,在国内率先研究了低温素烧、高温釉烧工艺在炻质水晶釉面砖工业化生产中的应用,并获得预期的理想效果。     

The challenge of antimicrobial glazed ceramic surfaces

The resistance that microorganisms develop to antibiotics is a worldwide challenge. The antimicrobial agents as disinfectants for surface treatments are widespreadly used to prevent the proliferation of microorganisms, but their use should be repeated over time to ensure a complete microbe-free surface. Surfaces with permanent antimicrobial properties suppose a recent demand in materials science for functional polymeric coatings, metals, treated wood or ceramic glazed tiles. Whereas polymeric coating has been extensively studied, the antimicrobial functionality on ceramic glazed surfaces is not completely achieved. This work reviews glazed ceramic tiles developments in antimicrobial and virucidal surfaces. The main antimicrobial physical or chemical mechanisms have been described as the base to develop active glazed surfaces. The main tests required to evaluate the antimicrobial response in glazed ceramic tiles are also summarized. The high temperature required in the ceramic processing is the key point to achieve a micro/nanostructure that potentiates the antimicrobial and virucidal response of the glazed surfaces. A discussion on recent developments as well as the main routes and challenges to obtain permanent surfaces with antimicrobial and virucidal response is provided.     

The steeple spire of the Parma Cathedral: An analysis of the glazed bricks and mortars

In October 2009, a terrible lightning struck the steeple spire of the Parma Cathedral, causing a fire. The fire-fighting operation made possible the discovery of the original spire ceiling made up by dichromatic glazed bricks, white and black, dating from the 14th century. Original materials presented a relevant decay, both for the high temperatures reached during the fire and for lack of maintenance. The research presents the first study of glazed bricks of the 14th century in Po Valley (Italy) with the purpose of collect chemical, mineralogical and petrographic data on the dichromatic glazed bricks. Brick samples with different kind of glazes and mortars exposed at different condition of fire were analyzed. The following techniques were used in the study: X-ray powder diffraction, optical microscopy, scanning electron microscopy analysis, inductively coupled plasma atomic emission spectroscopy and Raman spectroscopy. Glazes, applied on to Ca-rich paste, have a high lead content (41–57 wt%), with an high amount of tin (19–24 wt%) for the white opacified glazes and manganese (about 4.0 wt%) for the black ones. Typological and historical analysis allowed us to define the production technique of bricks and glazes. Mortars are mainly composed of lime binder and carbonate aggregate.     

传统陶瓷色釉命名中的美学尺度

人们对陶瓷釉色探索的根本动力来自装饰的心理需要。从单一的青瓷发展到缤纷艳丽的明清色釉瓷,在丰富我们视觉体验的同时,由此带出了一连串关于釉色的名称,它们事实上成为了传统色釉瓷发展中的一道独特的文化景观。好的命名能够激发起鉴赏者积极的审美想象,将色釉瓷的艺术性提高到新的高度。     

湖田窑出土黑釉瓷的产地研究

景德镇湖田窑窑址的南宋、元地层出土了类吉州窑、类建窑以及自具特色的黑釉瓷片。本文通过研究它们胎釉的化学组成,并与吉州窑和建窑黑釉瓷的胎釉化学组成进行对应分析,认为湖田窑宋、元时期也生产自己的黑釉瓷。其南宋、元堆积层出土的黑釉瓷中有吉州窑和建窑的产品,为当时各窑烧制工艺相互交流的佐证。湖田窑生产的部分黑釉瓷模仿了吉州窑的选料标准,应该是学习吸收吉州窑烧造黑釉瓷工艺的结果,这类黑釉瓷可能是南宋时期生产的。而另一部分黑釉瓷使用了质量较差的瓷土作为制胎原料,可能是元代时生产的。     

Investigation of borophosphosilicate glasses synthesized by the sol-gel method

The synthesis of vitreous borophosphosilicate materials by the sol-gel method is investigated. The differential thermal analysis and IR spectroscopic studies of xerogels and vitreous materials prepared are carried out. The permittivity of the vitreous material at a frequency of 1 MHz, the dielectric loss tangent, and the linear thermal expansion coefficient in the temperature range 20–500°C are determined. The vitreous dielectric synthesized can be used for the interlayer insulation of silicon integrated circuits and the creation of “siliconon-insulator” structures.     

Investigation of borophosphosilicate glasses synthesized by the sol-gel method

The synthesis of vitreous borophosphosilicate materials by the sol-gel method is investigated. The differential thermal analysis and IR spectroscopic studies of xerogels and vitreous materials prepared are carried out. The permittivity of the vitreous material at a frequency of 1 MHz, the dielectric loss tangent, and the linear thermal expansion coefficient in the temperature range 20–500°C are determined. The vitreous dielectric synthesized can be used for the interlayer insulation of silicon integrated circuits and the creation of “siliconon-insulator” structures.     

球磨转速与球磨产品颗粒分布的关系

本文在实验室及工业生产的不同条件下，采用不同的固定转速及多种规律的变速球磨含瘠性料较多的釉面砖坯、釉料与含软质料较多的彩釉砖坯料，对其结果进行分析，研究，得出了固定转速从理论转速比１为界，≥１及＜１的球磨和不同规律的变速球磨等与球磨产品颗粒分布的关系及其特点，为寻求提高球磨产品颗粒分布质量的措施提供了依据。     

溶胶——凝胶法制备釉面砖表面TiO2涂层的XPS研究及其光催化性能

用溶胶－凝胶法在釉面砖上制备了均匀的ＴｉＯ２涂层,借助Ｘ射线光电子能谱仪（ＸＰＳ）研究了釉面涂层的化学组成,结果表明：（１）涂层与釉面之间是化学结合的;２）ＴｉＯ２涂层中含有一定量的Ｔｉ＾３＋,讨论联生Ｔｉ＾３＋的原因,最后测试了紫外线及太阳光照射下,ＴｉＯ２涂层釉面砖对敌敌畏水溶液中有机磷的光催化降解率。该类材料可望在环境保护,污水处理等方面有广阔的应用前景。     

Development of gold-bronze metallic glazes in a clay-based system for stoneware bodies

In this study, a triaxial glaze system consisting of red clay, kaoline, quartz, MnO, CuO and CoO is systematically developed to produce gold-bronze raw metallic glazes for stoneware bodies. At first, all of the glazed samples in the developed system were fired in an electrically-heated kiln at 1160 °C. Then, the selected successful gold-bronze metallic glazes were applied onto 3-D forms of stoneware bodies and fired at the same conditions. Microstructural characterizations of the glazes are done with scanning electron microscopy (SEM) and energy dispersive x-ray analyses (EDS). This study revealed that triaxial blending of the ceramic raw materials is a beneficial method for glaze production and gold-bronze surfaces are obtained in glazes G 9, G 26, and G 34. It is observed that chemical composition of the glazes directly influence the color and the amount of CuO is more significative than MnO for achieving gold-bronze effect.     

Novel geopolymeric material cured at room temperature

Abstract

Abstract

Alkali activated binders are a new class of binding material with comparable or enhanced performance to Portland cement. These binding materials are obtained by a chemical reaction between an aluminosilicate material and a highly alkaline solution. In most cases, the setting hardening process of this binder is performed at high curing temperatures. In this paper, alkali activated mortars based on vitreous calcium aluminosilicate (VCAS) cured at room temperature are evaluated. Mechanical strength development and microstructural analysis (scanning electron microscopy, thermogravimetric analysis, X-ray diffraction and mercury intrusion porosimetry) of these materials are performed. Mortars yielded compressive strength ～89 MPa after 360 days. This is the first time that VCAS is used as aluminosilicate source material in the production of alkali activated mortars cured at room temperature.     

Use of Gabbro in Production of Facing Ceramic Tiles

The advantages of using gabbro rock, which is rich in calcium and magnesium oxides, in the production of ceramic facing tiles, instead of raw materials containing calcium and magnesium carbonates are discussed. It is shown that by adding ceramic tile scrap and increasing the slip viscosity, it is possible to improve the product quality and change over to one-stage firing of glazed tiles.     

利用赤泥制备琉璃瓦的研究

利用广西平果铝厂产出的工业废弃物—赤泥制备琉璃瓦,研究琉璃瓦坯料的配料比及坯料的可塑度,以及釉料的组成,为赤泥的开发利用开辟了一条新途经。     

利用赤泥制备琉璃瓦

本文利用广西平果铝厂产出的工业废弃物———赤泥制备琉璃瓦,研究琉璃瓦的坯料配比及坯料的可塑性,以及釉料的组成,为赤泥的开发利用开辟一条新途径。