低温覆铝锌钢板搪瓷的密着性能研究

通过对覆铝锌钢板搪瓷样品的密着测试,研究了搪瓷的密着性能。通过金相、扫描电镜等测试,分析了铝锌钢板搪瓷断面结合的微观结构,通过能谱测试分析铝锌钢板搪瓷的元素分布,探讨铝锌搪瓷的密着机制。结果表明,铝锌钢板搪瓷的密着性能良好,铝锌镀层与搪瓷层之间有明显的过渡层和元素扩散,中间过渡层与金属铝的结合主要通过金属键来实现,中间过渡层与瓷釉层的结合主要是通过离子键和共价键来实现。     

新型搪瓷-覆铝钢板韧性搪瓷

覆铝钢板韧性搪瓷是以覆铝钢板为底材，涂烧一种特殊低温瓷釉而制造的新型复合材料。介绍了该材料底材的选择，瓷釉的特点和釉浆制备，涂搪、干燥及烧成工艺特点，探讨了覆铝钢板搪瓷的密着机理，分析了该材料的应用前景。     

覆铝钢板搪瓷的低温制备及其密着机理研究

研究了覆铝钢板搪瓷的低温烧成工艺,运用扫描电子显微镜观察了其界面形貌,发现在搪瓷层和金属层的界面形成了铁-铝-瓷釉的复合层。X射线能谱仪分析结果表明界面间的元素扩散十分强烈,并由此促进了覆铝钢板与搪瓷层形成良好的密着。     

低温覆铝钢板平板搪瓷研究

1 引言 钢板覆铝搪瓷是一种新型复合型装饰材料,其制造工艺是在钢板上先采用热浸涂方法涂上一层薄薄均匀的铝层,再进行涂搪烧成,钢板覆铝搪瓷的截面结构如图1所示。这种材料的特点是既具有传统搪瓷耐酸、耐碱、耐磨、美观、色彩鲜艳的优点,同时又具有传统搪瓷不具备的可以切割、打孔、高度平整、重量轻、瓷层即使有点破损也不会生锈等特点。     

覆铝钢板搪瓷的底材化学处理

研究了覆铝钢板复合材料的表面化学状态与搪瓷密着性的关系,认为表面的组织状态与结构对搪瓷密着性有很大的影响。实验得出,铬浴处理后的覆铝钢板表面活性强,组织结构适合瓷釉元素的扩散,搪瓷界面过渡层宽度增加,密着强度提高。     

覆铝钢板搪瓷的耐温急变性研究

本文探讨了热膨胀、弹性、抗张强度等物理性能对覆铝钢板搪瓷的耐温急变性的影响,并计算了热稳定性,当瓷层的Z/(E_α)的值为7.93×10_(-6)时,覆铝钢板搪瓷的耐温急变性大干130℃,具有优良的温度急变抗力。     

钢板覆铝搪瓷密着机理研究

钢板覆铝搪瓷密着机理研究蒋伟忠（中国轻工总会玻璃搪瓷研究所２０００５２）ＳｔｕｄｙｏｆＡｄｈｅｒｅｎｃｅＭｅｃｈａｎｉｓｍｏｆＡｌｕｍｉｕｍ－ＣｏａｔｅｄＳｔｅｅｌＳｈｅｅｔＥｎａｍｅｌ￥ＪｉａｎｇＷｅｉｚｈｏｎｇ（Ｇｌａｓｓ＆ＥｎａｍｅｌＲｅｓｅａ...     

覆铝钢板搪瓷密着机理研究

通过对覆铝钢板搪瓷界面形貌、结构、元素分布等的分析 ,从化学反应动力学、热力学以及界面能探讨了密着机理 ,本质是界面化学反应产生络合物、氧化物以及合金相 ,并溶解在界面区瓷釉中 ,在界面形成的化学键使瓷层与基体紧密结合在一起     

铝锌镀层钢板搪瓷烧成工艺的探讨

将铝锌镀层钢板搪瓷在一定温度下不同时间烧成,通过金相、扫描电镜和能谱仪对样品横切面进行分析,探讨不同的烧成工艺对搪瓷烧成结果的影响。     

纳米二氧化硅提高钢板搪瓷耐酸化学稳定性研究

通过磨加方法,将纳米二氧化硅引入到钢板搪瓷釉中,在不改变钢板搪瓷釉工艺性能的条件下,提高钢板搪瓷的耐酸化学稳定性.研究结果表明,磨加一定量纳米二氧化硅到钢板搪瓷釉中,不仅可以显著提高钢板搪瓷的耐酸化学稳定性,而且工艺性能也相当优良.     

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。     

搪瓷热管的耐腐蚀实验研究

根据实验对比碳钢、不锈钢和搪瓷涂层的耐腐蚀性能,说明利用搪瓷的表面技术制作热管在改进空气预热器方面有良好的应用前景.     

Characterization of vitreous enamel–steel interface by using hot stage ESEM and nano-indentation techniques

In this study, phase transformation of the vitreous enamel and the interface steel–enamel during firing was analyzed. The thermal transformation of vitreous coating on steel was observed “in situ” with an environmental scanning electron microscopy and the mechanical properties of the steel–enamel interface were studied by using a nano-indenter. The interface reactions and the resulting structure can strongly influence the adhesion mechanism between glass coatings and the metal substrate. An in-depth investigation and structural characterization was therefore performed to define the correlation between interface morphology and the final chemical and mechanical properties of the enamel–steel interface.     

Formation mechanism and adhesive strength of white single-layer low-melting enamels on steel

The formation mechanism of white single-layer glass enamel coating on steel surface in low-temperature firing is considered. The basic laws governing strong adhesion are identified. The effect of various methods of pre-treatment of steel before single-layer low-temperature enameling on the structure and composition of the transitional adhesive contact layer determining the adhesion strength of steel — enamel composite is demonstrated.     

纳米二氧化硅改善钢板搪瓷浴缸耐酸化学稳定性

通过磨加法将纳米二氧化硅引入到钢板浴缸搪瓷釉中,在不改变钢板浴缸搪瓷釉工艺性能的条件下,提高钢板浴缸搪瓷的耐酸化学稳定性。研究结果表明,磨加一定量纳米二氧化硅到钢板浴缸搪瓷釉中,不仅可以显著提高钢板浴缸搪瓷的耐酸化学稳定性,而且工艺性能优良。     

THE EFFECT OF FURNACE ATMOSPHERE ON THE FIRING OF ENAMEL1

It is shown that in firing ground coat and other one coat enamels, the atmosphere of the furnace plays an important part. Oxygen in the muffle penetrates the enamel during the early stages of the firing forming a film of iron oxide on the surface of the steel. This film, whether applied before enameling or formed incidentally to firing, partially dissolves in the fused enamel giving the intimate bond between metal and enamel. Ground coat enamel fired in an atmosphere of nitrogen was found not to adhere to the steel. Approximate values are given for the proportion of furnace space to enameled surface to insure sufficient oxidation when residual air is depended upon to supply the oxygen.     

Oxide Adherence and Nickel Flashing in Vitreous Enameling

The influence of iron deposition and nickel flashing on the adherence of oxides to enameling-grade sheet steel has been examined. Nickel flashing promotes oxide adherence, and a correlation between oxide adherence and adherence of a directly applied titania self-opacified cover-coat enamel has been established. Further work is necessary, however, to obtain a satisfactory enamel surface texture under these conditions before the direct application of a cover-coat enamel can become a commercial possibility. Similarly, good adherence of a titania self-opacified cover coat applied directly to steel has been promoted by nitric acid pickling with and without a nickel-flashing treatment. Finally, the iron content of a hydrochloric acid pickling bath and the amount of hydrogen absorbed by the steel during pickling have been shown to influence the amount of nickel deposited on the steel during flashing.     

RELATION OF COEFFICIENT OF EXPANSION TO CROSS-BENDING STRENGTH OF SHEET-STEEL ENAMELS1

Two series of enamels were made with calculated cubical coefficients of expansion varying from 361 to 306. In both series of enamels, the cross-bending values were inversely proportional to the coefficient of expansion. This is due to the fact that all enamels on sheet steel have lower coefficients of thermal expansion than steel. In cooling, after the enamel is fused to the metal, strains are set up in the enamel; the lower the expansion of the enamel the greater the strains. When the enameled piece is bent, the greater the stresses present, the farther the pieces can be bent before there is any real tensile strain on the enamel. High bending ability is dependent primarily on high compressive strains induced by lower coefficient of expansion of the enamel than of the metal base. Compressive strains cause warping, fishscaling (in ground coat), and chipping; therefore the bending strength should not be too high. In all control work both the minimum and the maximum bending strength should be specified.     

Electrochemical Methods for Improving the Strength of Adhesion of One-Coat Glass Enamels to Substrate

A method for pretreatment of steel surface before one-coat enameling is proposed, which makes it possible to obtain an enamel coating with sufficiently strong adhesion and good surface quality. The essence of this method is electrolytic precipitation of nickel and copper layers on steel surface. A composition of one-coat enamel coating based on aluminum-bearing waste has been developed. Tinted one-coat enamels have been obtained based on this composition.