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首页> 外文期刊>Journal of Materials Engineering and Performance >Investigation of Properties of Powder Injection-Molded Steatites
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Investigation of Properties of Powder Injection-Molded Steatites

机译:粉末注射成型滑石的性能研究

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摘要

In this study, the mechanical and micro-structural properties of injection-molded steatites were investigated experimentally. Initially, steatite powders and binders of polyethylene glycol (PEG), polypropylene (PP), and stearic aside (SA) were mixed to prepare the feedstock. The mixing powders were granulated using the extruder. The short granules in cylindrical shapes were used as the feedstock in the injection-molding operations. Solvent- and thermal-debinding processes were applied to the green samples after the molding. The samples were sintered at 1300 °C for 4 h, and a theoretical density of 98-99% was achieved. Three-point bending and tensile tests were performed on the samples which were sintered at 1200-1300 °C. The maximum three-point bending and tensile strength values were found as 154 and 47 MPa, respectively. The morphology of fractured surface was done by scanning electron microscopy whereas porosity investigations were carried out using the same microscopy. Grain growth and structure on the specimens were also investigated using transmission electron microscopy.
机译:在这项研究中,实验研究了注射成型滑石的力学和微观结构特性。首先,将滑石粉和聚乙二醇(PEG),聚丙烯(PP)和硬脂精(SA)的粘合剂混合以制备原料。使用挤出机将混合粉末造粒。圆柱状的短颗粒用作注塑操作中的原料。成型后,溶剂和热脱脂工艺应用于生坯样品。样品在1300℃下烧结4小时,理论密度达到98-99%。对在1200-1300℃下烧结的样品进行三点弯曲和拉伸测试。发现最大三点弯曲和拉伸强度分别为154和47 MPa。断裂表面的形态通过扫描电子显微镜完成,而孔隙率研究则使用相同的显微镜进行。还使用透射电子显微镜研究了样品上的晶粒生长和结构。

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