The Effect of Mechanical Milling on Graphite–Boron Carbide Hybrid Reinforced ZA27 Nanocomposites
The Effect of Mechanical Milling on Graphite–Boron Carbide Hybrid Reinforced ZA27 Nanocomposites
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DOI：
10.1007/s13369-017-2708-7
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发表时间：
2018-03
影响因子：
2.9
通讯作者：
R. Dalmış;H. Çuvalcı;A. Çanakçı;O. Guler;E. Çelik
中科院分区：
文献类型：
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作者：
R. Dalmış;H. Çuvalcı;A. Çanakçı;O. Guler;E. Çelik
本研究的主要焦点集中在机械球磨对石墨-碳化硼混杂增强ZA 27纳米复合材料的影响。在这方面，纳米尺寸的石墨（Gr）和碳化硼（C）增强ZA 27基体纳米复合材料通过机械球磨（MM）和热压技术的组合制造。采用MM法制备了纳米添加剂均匀分散在ZA 27基体中的ZA 27基杂化纳米复合材料（ZHNC）。采用X射线衍射仪、扫描电子显微镜、硬度和拉伸试验机研究了纳米复合材料的微观结构和力学性能随球磨时间的变化。结果表明，MM法可用于纳米添加剂的均匀分布。片状形态对物理和机械性能产生负面影响。球磨12 h后，粉体的晶粒和粒度均有所减小.随着MM时间的增加，纳米复合块体材料的微观结构得到了均匀的，随后其力学性能得到了显着改善。
The main focus of this study is concentrated on the effect of mechanical milling on graphite–boron carbide hybrid reinforced ZA27 nanocomposites. With this respect, nano-sized graphite (Gr) and boron carbide (C) reinforced ZA27 matrix nanocomposites were fabricated via a combination of mechanical milling (MM) and hot pressing techniques. MM method was used to produce a ZA27-based hybrid nanocomposite (ZHNC) that nano-sized additives dispersed homogenously in ZA27 matrix. Microstructural and mechanical properties of the nanocomposites were scrutinized as a function of milling time using X-ray diffractometer, scanning electron microscope, hardness and tensile testing machines. Results show that MM method can be utilized for homogeneously distributing the nano-sized additives. Flake-shape morphology negatively influences physical and mechanical properties. It was also found that grain and particle size is decreased after 12 h milling process. With increasing MM time, homogeneous microstructure of the nanocomposite bulk materials was obtained and subsequently their mechanical properties were improved considerably.