激光辐照制备搪瓷涂层

激光辐照制备的搪瓷涂层表面粗糙,与金属基材结合牢固。一般由 Si,Al,Na,K,B,F,O等元素组成。在激光辐照过程中 K,Na 明显地挥发,从而在涂层中的含量明显减少;Co,Ni,主要分布在界面附近;Fe 元素也由基材进入涂层,呈梯度状分布,在界面过渡区含量很高,在涂层内含量很低。搪瓷涂层的形成与激光辐照参数,特别与激光功率间存在极为密切的关系;只有选用合理的参数,才能制得搪瓷涂层。

ENAMEL COATING MANUFACTURED BY LASER IRRADIATION

Enamel coating was produced on steel substrates using continuous wave CO_2laser irradiation from the same raw material as used for the industrially used enamel coating.The formed coating fairly well joined to the substrate and had a bumpy glossy surface.It com-posed of Si,Al,Ca,Na,K,Co,Ni,Fe,B,F and O elements,however containing lessNa and K than the intial composition due to the observable evaporation when the raw materialinteracting with laser irradiation.Co and Ni enriched in the interfacial zone.Fe element hadbeen transfered into the coating,its content was high at near the interface and low at the maincoating body.The processing parameters,especially laser power,are identified very importantfor the formation of enamel coating.