多层金属涂覆光纤的界面结合强度

摘要

Multilayer metal-coated optical fibers were fabricated by respectively depositing a silver (Ag)film and a titanium (Ti)film on bare optical fibers by magnetron sputtering,and subsequently a nickel (Ni)coating was prepared on the film by electroplating.The interfacial bonding strength between the metallic coating and optical fiber was measured by using single-fiber push-out tests.The interfacial morphology and elements were analyzed,as well as the influence of various coating materials and electroplating conditions on the bonding strength.The experimental results show that the sputtered metallic films remained intact,and the failure location appeared at the interface between the metallic coating and optical fiber.The interfacial bonding between Ti film and optical fiber is stronger than that between Ag film and optical fiber.The interfacial bonding strength between the metallic coating and optical fiber for the nickel coating electroplated at a higher temperature and a lower current density is higher.%先采用磁控溅射法在裸光纤表面分别制备银和钛粘结层，再采用电镀法在不同粘结层表面制备镍涂层得到了多层金属涂覆光纤，通过单纤维压出试验测试了金属涂层/光纤的界面结合强度，分析了界面形貌、元素及粘结层材料和工艺条件对结合强度的影响。结果表明：磁控溅射的金属粘结层完好，在金属涂层/光纤界面发生破坏；钛粘结层/光纤的结合能力比银粘结层/光纤的强；在较高液温和较小电流密度的电镀工艺条件下，金属涂层/光纤具有更高的界面结合强度。