ABSTRACT

Zirconium coating on Zirconium-Niobium alloy substrate was obtained by pulsed current electrodeposition from FLINAK-K₂ZrF₆ molten salt at 1023 K in argon atmosphere. The microstructure and morphology of the coating were investigated. The adhesion between coating and substrate, porosity of the coating surface was tested. Metallic zirconium crystal of zirconium coating is a hexagonal crystal structure with the preferential growth orientation of (002). The porosity of the coating surface is 1.7%. The adhesion between coating and substrate is good in the scratch test, and the adhesive force of the zirconium coating is 10.5 N. Furthermore, on the inner and outer walls of a 10 mm diameter tube, the same quality zirconium coating can be obtained.

摘要

通过在氩气气氛中于1023 K下从FLINAK-K ₂ ZrF ₆熔融盐中进行脉冲电流电沉积，在锆-铌合金基材上获得锆涂层。研究了涂层的微观结构和形貌。测试了涂层与基材之间的粘附力，涂层表面的孔隙率。锆涂层的金属锆晶体是具有优先生长取向为（002）的六方晶体结构。涂层表面的孔隙率为1.7％。涂层与基材之间的附着力在划痕试验中良好，锆涂层的粘合力为10.5N。此外，在直径为10 mm的管的内壁和外壁上，可以获得相同质量的锆涂层。