Characterization, Processing and Performance of Belle Fourche Shale for Ceramics
Characterization, Processing and Performance of Belle Fourche Shale for Ceramics
复制标题
DOI：
10.1007/s42461-023-00853-8
复制
发表时间：
2023-09
期刊：
影响因子：
--
通讯作者：
Samuel Kessinger;Kiran Green;Jacob Petersen;Jon J. Kellar
中科院分区：
文献类型：
--
作者：
Samuel Kessinger;Kiran Green;Jacob Petersen;Jon J. Kellar
对贝尔富什页岩进行加工和表征，以用作粘土基陶瓷。将页岩湿筛以产生± 150 μm的颗粒。X射线衍射（XRD）显示，与未处理的材料相比，-150 μm的材料富含粘土含量，而与筛下样品相比，筛上材料富含石英。对-150 μm样品进行粒度分析，结果显示中值粒度约为10 μm。扫描电子显微镜（SEM）分析进一步证实了小的板尺寸，这似乎主要是层状粘土颗粒。接着，将~ 150 μm的颗粒辊压成绿色体，在室温下干燥，并在998 ℃下烧制。通过XRD分析烧制件，其含有6重量%的赤铁矿、55重量%的石英、19重量%的微斜长石和各种其它少量的矿物。与998 ℃烧成相比，1152 ℃烧成的莫来石中含有较多的赤铁矿。使用多光谱分析仪定量998 ℃焙烧（橙子）至1152 ℃焙烧（红色）样品的颜色变化。未烧制体的微型计算机断层扫描（Micro-CT）显示出非常少的大孔，而在998°C下烧制的片也显示出很少的小孔，烧制体的总孔隙率增加。从上述样品中获得的显微硬度数据得出的维氏硬度（HV1.0）值为70.8 HV1.0（998 ℃）和485.7 HV1.0（1152 ℃）。进行了三点弯曲测试，在998 ℃下烧制的部件的平均强度为23 MPa。在1152 ℃下烧成的样品的平均弯曲强度为55 MPa。
Belle Fourche Shale was processed and characterized for use as a clay-based ceramic. The shale was wet sieved to produce particles that were ± 150 μm. X-ray diffraction (XRD) revealed that the -150 μm material was enriched in clay content compared to the unprocessed materials, whereas the oversize material was enriched in quartz compared to the undersize sample. Particle size analysis was performed on the—150 μm sample, which showed that the median particle size was around 10 μm. Scanning electron microscopic (SEM) analysis further confirmed the small plate size, which appeared to be primarily layered clay particles. Next, the -150 μm particles were rolled into a green body, dried at room temperature, and fired at 998°C. The fired piece was analyzed by XRD and contained 6 wt% hematite, 55% quartz, 19% microcline, and various other minor amounts of minerals. When fired at 1152 ℃, mullite was found with increasing hematite compared to the 998 ℃ firing. A multi-spectral analyzer was used to quantify the color change of the 998 ℃ fired (orange) to the 1152 ℃ fired (red) samples. Micro-computed tomography (Micro-CT) of the unfired body exhibited very few large pores, while the piece fired at 998°C also exhibited few and small pores, the overall porosity of the fired body increased. Microhardness data, obtained from the aforementioned samples, resulted in Vickers Hardness (HV1.0) values of 70.8 HV1.0 (998 ℃) and 485.7 HV1.0 (1152 ℃). Three-point bend testing was performed, giving an average strength of 23 MPa on pieces fired at 998 ℃. The average bending strength of the samples fired at 1152 ℃, was 55 MPa.