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Investigations on the Performance Characteristics of Carbon Nano-tubes, Alumina and Titanium Dioxide Based Plasma Sprayed Coatings on AISI 1020 Steel
International Journal of Precision Engineering and Manufacturing ( IF 2.6 ) Pub Date : 2021-01-18 , DOI: 10.1007/s12541-020-00458-x
Vijayanand Palani , Amitesh Kumar , K. R. Vijaya kumar , P. Kumaran

The current study deals with the investigation on the performance characteristics of varying composition of coating mixture comprising carbon nano-tube, alumina and titanium dioxide on the thermal spray coating on mild steel. The performance properties, namely tensile and microhardness, were measured for the varying composition of coating mixture based thermal coating on mild steel. Response surface methodology was adopted to access the interdependencies prevailing between various dependent and independent parameters, namely composition of the mixture, tensile and microhardness. Scanning Electron Microscope coupled with elemental mapping were used to show the melting zones features and composition. The experimental results and response graphs indicated that increased weight percentages of carbon nano-tube and TiO2 with an optimal value of alumina at 87.5 percent of total weight showed better performance properties due to better dispersion leading to good bonding suitable for protective coatings. Scanning Electron Microscope images reveal partially melted zones that were restricted to smaller regions, and all particles tend to solidify beginning with a fully molten phase.



中文翻译:

AISI 1020钢上碳纳米管,氧化铝和二氧化钛基等离子喷涂涂层的性能特征研究

当前的研究涉及对低碳钢上热喷涂涂层中碳纳米管,氧化铝和二氧化钛等涂层混合物成分变化的性能特征的研究。针对低碳钢上基于涂料混合物的热涂层的不同组成,测量了其性能特性,即拉伸强度和显微硬度。采用响应面方法来获取各种相关和独立参数之间普遍存在的相互依赖性,即混合物的成分,拉伸强度和显微硬度。扫描电子显微镜结合元素图谱用于显示熔融区的特征和组成。实验结果和响应图表明,碳纳米管和TiO 2的重量百分比增加最佳氧化铝含量为总重量的87.5%时,由于具有更好的分散性,因此具有更好的性能,从而导致了适用于保护涂料的良好粘结。扫描电子显微镜图像显示出部分熔化的区域被限制在较小的区域,并且所有颗粒都倾向于从完全熔化的相开始固化。

更新日期:2021-01-18
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