Characterization of the Glass Structure of East Lampung's Scoria Basalt (Indonesia) Applied to the Ceramic Body

IF 0.9 4区 材料科学 Q3 MATERIALS SCIENCE, CERAMICS
David Candra Birawidha, Dwi Asmi, Simon Sembiring, Slamet Sumardi, Fathan Bahfie, Diah Susanti
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Abstract

The research was carried out to increase the added value of the basalt rock from East Lampung, Indonesia, by using it as a raw material for producing a glaze for earthenware ceramics. Basalt of scoria and basalt smelted at a temperature of 1,400°C mixed with local kaolin and feldspar from Lampung, Indonesia, with variations in the composition of basalt to kaolin and feldspar at 70 : 15 : 15, 50 : 25 : 25, and 30 : 35 : 35, respectively, was applied. The glazing process using the dip coating method was applied, followed by burning all samples at a temperature of 1,000°C. All samples were held for 8 hours at the specified temperature and cooled to room temperature. According to the results of determining the color properties of each sample it is determined that they depend on the iron content. It was established that the more of basalt in composition is used, the brighter the red color of the glaze becomes when crystallization grows due to the devitrification process during cooling. XRF analysis was conducted to determine the chemical composition of each composition to evaluate its effect on crystallization formed based on the XRD test. Furthermore, an SEM analysis was carried out to determine the topography and morphology of the glaze samples obtained. According to the analysis results, the natural basalt samples provide a topography of a bright and well-adhesive layer. In contrast, molten basalt gives a rough and opaque surface. It has significantly different results as the starting phase of each material has various structure forms, which are influenced by the forming glaze surface at 1,000°C. At the 2000 SEM magnification, samples with basalt scoria as based material tend to fuse with the main body of earthenware. It gives the glazed coating strong adhesion to stick to the earthenware surface. At the same time, molten basalt provides cavities and pores in the area of interaction between the main body and the glazed surface. The growing use of raw and melted basalt in the glaze layer provides a brighter red gradation, and the majority of the phase that happened was from the pyroxenic group and some wollastonites.

Abstract Image

印尼东楠榜火山玄武岩玻璃结构在陶瓷体上的应用研究
该研究是为了提高印度尼西亚东楠榜玄武岩的附加值,将其作为生产陶器釉料的原料。采用在1400℃下熔炼的火山渣和玄武岩与印尼楠蓬当地高岭土和长石混合,玄武岩与高岭土和长石的比例分别为70:15:15、50:25:25和30:35:35。采用浸涂法进行上釉工艺,然后在1000°C的温度下燃烧所有样品。所有样品在规定温度下保存8小时,冷却至室温。根据对各样品颜色特性的测定结果,确定其与铁含量有关。结果表明,玄武岩用量越多,由于冷却过程中的脱硝作用,釉面在结晶过程中呈现越亮的红色。通过XRF分析,确定各组分的化学成分,并根据XRD测试评价其对结晶形成的影响。此外,进行了扫描电镜分析,以确定所获得的釉样品的形貌和形态。根据分析结果,天然玄武岩样品提供了一个明亮和良好的粘合层的地形。相比之下,熔融的玄武岩表面粗糙且不透明。由于每种材料的起始阶段具有不同的结构形式,这些结构形式受到1000℃形成釉表面的影响,因此结果有显著差异。在2000年的SEM放大下,以玄武岩岩屑为基材的样品与陶器主体发生熔合。使釉面涂层具有较强的附着力,能粘附在陶器表面。同时,熔融玄武岩在主体与釉面相互作用区域形成孔洞和孔隙。随着釉层中原始玄武岩和熔融玄武岩用量的增加,釉层呈现出较亮的红色渐变,大部分相来自辉石岩群和部分硅灰石。
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来源期刊
Powder Metallurgy and Metal Ceramics
Powder Metallurgy and Metal Ceramics 工程技术-材料科学:硅酸盐
CiteScore
1.90
自引率
20.00%
发文量
43
审稿时长
6-12 weeks
期刊介绍: Powder Metallurgy and Metal Ceramics covers topics of the theory, manufacturing technology, and properties of powder; technology of forming processes; the technology of sintering, heat treatment, and thermo-chemical treatment; properties of sintered materials; and testing methods.
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