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首页> 外文期刊>Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing >Hardness, adhesion index and microstructure of PEEK coating on Al or Fe substrate by LVOF flame spray
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Hardness, adhesion index and microstructure of PEEK coating on Al or Fe substrate by LVOF flame spray

机译：LVOF火焰喷涂在Al或Fe基体上的PEEK涂层的硬度，粘附指数和微观结构

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Low velocity oxy-fuel (LVOF) flame spraying technique was employed to deposit poly-ether-ether-ketone (PEEK) powder onto the low carbon steel (Fe) or aluminum (Al) substrate. The adhesion index, micro-hardness and morphological properties were studied. The effects of interfacial roughness, substrate preheating, spray distance and magnetic field on the adhesion, hardness and morphological results were of our main interest. The results indicated that the optimum process conditions (smooth top-surface with high adhesion index and hardness) for thermal spray coating of PEEK on Fe or Al substrate were achieved at the substrate preheating temperature of 200 ℃ and with the spray distance of 100 mm. The adhesion index was increased with the increase in interfacial roughness. The hardness and adhesion index of the PEEK coating on Fe substrate increased with the application of magnetic field due to the increase in the degree of crystallinity of the PEEK under magnetic field. The recommended flux density under the experimental conditions was 17 mT.
机译：采用低速氧气-燃料（LVOF）火焰喷涂技术将聚醚醚酮（PEEK）粉末沉积到低碳钢（Fe）或铝（Al）基材上。研究了附着指数，显微硬度和形貌性能。界面粗糙度，基材预热，喷涂距离和磁场对附着力，硬度和形态结果的影响是我们的主要兴趣。结果表明，在预热温度为200℃，喷涂距离为100 mm的条件下，可以获得在PE或Al基板上进行PEEK热喷涂的最佳工艺条件（光滑的顶表面，具有较高的附着指数和硬度）。粘合指数随界面粗糙度的增加而增加。由于磁场作用下PEEK的结晶度增加，Fe基底上的PEEK涂层的硬度和附着指数随磁场的施加而增加。在实验条件下推荐的通量密度为17 mT。

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