Reusing cast iron slag waste as a material development by flash sintering

IF 2.1 4区 材料科学 Q2 MATERIALS SCIENCE, CERAMICS
Zeynep Çetinkaya, Gökhan Arıcı, Benginur Öztürk
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Abstract

The materials sintered with FS are determined by considering temperature, time, energy, cost, environmental pollution, and human health. In this study, cast iron slag wastes (CISW) were utilized in powder form and sintered using flash sintering (FS). The outcomes of both FS and conventional sintering (CS) processes were assessed regarding their physical, chemical, and mechanical properties. The CS process was performed at 1000ºC for 4 h. FS experiments were conducted under 20, 25, and 30 V/mm electric fields. CISW was sintered using the FS method resulting in lower temperatures and shorter processing times, thus yielding energy savings. Through this method, it was observed that the interatomic spaces narrowed due to the electric field and temperature applied to the sample. Physical, chemical, and mechanical tests (3-point bending and hardness) were carried out on all sintered materials. Experimental results indicated that the sample sintered under the 20 V/mm electric field at 517ºC for 15 s exhibited better mechanical properties compared to CS. On the other hand, the sample flash sintered under 30 V/mm electric field had lower temperatures (478ºC) compared to all FS processes that were carried out with perfect intergranular interactions. However, the mechanical properties were lower than the others because the structures may have passed into the liquid phase. Consequently, it has been proven that this product obtained from CISWs can be used in floor and wall tiles according to ISO10545-4 and BS—EN14411:2016 standards. It has better mechanical strengths than all other sintering processes with FS under 20 V/mm electric field.

利用闪烧技术开发废铁渣资源化利用
用FS烧结的材料综合考虑了温度、时间、能源、成本、环境污染和人体健康等因素。本研究以铸铁渣废料(CISW)为原料,采用闪速烧结(FS)进行烧结。对FS和常规烧结(CS)工艺的物理、化学和机械性能进行了评估。CS过程在1000℃下进行4 h。FS实验在20、25和30 V/mm电场下进行。CISW采用FS法烧结,温度更低,加工时间更短,从而节省了能源。通过这种方法,观察到由于施加在样品上的电场和温度,原子间空间缩小。对所有烧结材料进行了物理、化学和机械测试(三点弯曲和硬度)。实验结果表明,在517℃、20 V/mm电场下烧结15 s的试样具有较好的力学性能。另一方面,在30 V/mm电场下烧结的样品温度较低(478℃),与所有具有完美晶间相互作用的FS工艺相比。然而,由于结构可能已经进入液相,其力学性能低于其他材料。因此,经证明,从CISWs获得的该产品可以根据ISO10545-4和BS-EN14411:2016标准用于地板和墙砖。在20v /mm电场条件下,它具有比其它烧结工艺更好的机械强度。
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来源期刊
Journal of the Australian Ceramic Society
Journal of the Australian Ceramic Society Materials Science-Materials Chemistry
CiteScore
3.70
自引率
5.30%
发文量
123
期刊介绍: Publishes high quality research and technical papers in all areas of ceramic and related materials Spans the broad and growing fields of ceramic technology, material science and bioceramics Chronicles new advances in ceramic materials, manufacturing processes and applications Journal of the Australian Ceramic Society since 1965 Professional language editing service is available through our affiliates Nature Research Editing Service and American Journal Experts at the author''s cost and does not guarantee that the manuscript will be reviewed or accepted
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