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Investigation of microhardness properties of the multi-walled carbon nanotube additive MgB2 structure by using the vickers method
Cryogenics ( IF 1.8 ) Pub Date : 2021-03-31 , DOI: 10.1016/j.cryogenics.2021.103295
Naki Kaya , Şükrü Çavdar , Özgür Öztürk , Hakan Ada , Haluk Koralay

In this study, the effect of multi-walled carbon nanotube doping to MgB2 compound on microhardness properties of MgB2 was investigated by using solid-state reaction method. The amount of multi-walled carbon nanotubes was chosen as 0, 1, 2, 3 and 4% by weight of total MgB2. All samples were obtained by sintered at 650 °C temperatures. The microhardness properties of the samples obtained were examined using the Vickers method. At the same time, the samples obtained were analyzed according to Meyer’s Law, proportional sample resistance (PSR) model, Hays-Kendall (HK) approach and elastic/plastic deformation (EPD) model. Samples were found to exhibit indentation size effect (ISE) behavior. It was understood that the multi-walled carbon nanotubes doped to the samples made MgB2 softer by reducing the intergranular bonding of the MgB2 structure. In addition, it was found that the force applied to the samples caused both plastic and elastic deformation on the samples.



中文翻译:

用维氏法研究多壁碳纳米管添加剂MgB 2结构的显微硬度性能

在这项研究中,多壁碳纳米管掺杂到硼化镁的效果2化合物上的MgB的显微硬度性能2通过使用固相反应法研究。选择多壁碳纳米管的量为总MgB 2的0、1、2、3和4重量%。所有样品均通过在650 °烧结获得 摄氏温度。使用维氏方法检查获得的样品的显微硬度特性。同时,根据迈耶定律,比例样品电阻(PSR)模型,海斯-肯德尔(HK)方法和弹性/塑性变形(EPD)模型对获得的样品进行分析。发现样品表现出压痕尺寸效应(ISE)行为。据理解,掺杂到样品中多壁碳纳米管制成的MgB 2更软通过降低的MgB的晶间粘合2结构。另外,发现施加到样品上的力导致样品上的塑性和弹性变形。

更新日期:2021-04-15
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