【摘要】 根据高能束对镀铬涂层及其界面强化机制的不同,镀铬/高能束表面复合技术可分为两类:高能束强化镀铬涂层复合技术和高能束预处理基体/镀铬复合技术。前者典型代表有激光表面强化或等离子体氮化/镀铬涂层;后者主要代表是激光预淬火基体/镀铬复合表面处理。综合阐述了上述3种典型的复合处理技术的原理、目的及实际综合效果;通过试验初步探讨了激光预淬火基体/镀铬复合技术延长镀铬身管寿命的主要机理。更多还原

【Abstract】 A review was given on the principles,purposes and practical effectiveness of chromium electroplating/ laser surface strengthening,plasma nitriding/chromium electroplating,and substrate laser pre-quenching/ chromium electroplating as the duplex surface treatment techniques.The mechanisms for the substrate laser pre-quenching plus chromium electroplating as a duplex surface treatment process to increase the service life of the chromium-plated gun tubes were discussed based on experimental exploration.It was pointed out that,according to the different interfacial strengthening mechanisms of high energy beam irradiation and chromium electroplating,the duplex surface treatment technique of chromium electroplating and high energy beam irradiation can be divided into two categories: high energy beam hardening of electroplated chromium coatings and the hybrid process of substrate high-energy-beam pre-treating plus chromium post-electroplating.The typical examples of the former include laser surface hardening(plasma nitriding) of electrodeposited chromium coatings,while the representative of the latter is the duplex treatment of substrate laser pre-quenching plus chromium post-electroplating.更多还原