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聚醚醚酮(PEEK)是一种高性能塑料,它卓越的性能使其在工业设施上的应用日益增多。本文中使用了火焰喷涂设备在304L不锈钢基材上沉积PEEK涂层,随后对喷涂的聚合物涂层进行CO2及Nd:YAG激光处理,使得涂层重熔从而变得更加致密。文中使用了SEM和XRD检测手段来表征喷涂涂层和重熔后涂层,结果表明CO2及Nd:YAG激光处理均适用于不锈钢基材表面PEEK涂层的致密化。然而,不同的激光加工参数所处理的涂层,重熔后具有不同的晶体结构。通过硬度测试、摩擦实验和划痕实验得到了重熔后涂层的力学性能特征,涂层的力学性能与其结构相关。
Polyetheretherketone (PEEK) is a high performance plastic whose superior properties make it increasingly used in industrial facilities. In this paper, a flame spray apparatus was used to deposit a PEEK coating on a 304L stainless steel substrate followed by a CO2 and Nd: YAG laser treatment of the sprayed polymer coating to remelt the coating to become denser. The SEM and XRD detection methods were used to characterize the spray coating and the remelted coating. The results show that both CO2 and Nd: YAG laser treatment are suitable for the densification of PEEK coating on stainless steel substrates. However, the coatings treated with different laser processing parameters have different crystal structures after remelting. The mechanical properties of the remelted coating were obtained by hardness test, friction test and scratch test. The mechanical properties of the coating were related to its structure.