Formation of carbon composite coatings by plasma spraying

被引：12
|
作者：
Marcinauskas, Liutauras [1 ,2 ]
Kavaliauskas, Ydrunas [1 ]
Kezelis, Romualdas [1 ]
机构：
[1] Lithuanian Energy Inst, Plasma Proc Lab, LT-44403 Kaunas, Lithuania
[2] Kaunas Univ Technol, Dept Phys, LT-51368 Kaunas, Lithuania
来源：
VACUUM | 2015年 / 122卷
关键词：
Plasma spraying; Microhardness; Graphite; Silicon; Surface morphology; TRIBOLOGICAL PROPERTIES; GRAPHITE OXIDE; MICROSTRUCTURE; POWER; PARAMETERS; TEMPERATURE; RESISTANCE; POWDERS; TORCH; SIZE;
D O I：
10.1016/j.vacuum.2015.04.028
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Carbon silicon sulfur composite coatings were deposited on stainless steel by atmospheric plasma spraying. The effect of spraying power on the coating microstructure and microhardness was investigated. The surface morphology and elemental composition of as-sprayed coatings were examined by scanning electron microscopy and energy dispersive X-ray spectroscopy. The increase of torch power leads to a lower oxidation degree and reduces the silicon concentration in the coatings. The SEM cross-section measurements indicated that the thicknesses of the coatings were in the range of 10-15 mu m. The X-ray diffraction measurements indicated an increase of crystalline graphite phase with the increase of power. The results indicated that the coating roughness decreased, while the microhardness and specific surface area increased with increased power. The highest microhardness value of 314 HV was obtained. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：326 / 331
页数：6
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