涡轮叶片是航空发动机/燃气轮机的核心部件,在服役过程中容易产生磨损、腐蚀、开裂等早期损伤,由于叶片价格昂贵,换件修理成本很高。涡轮叶片通常由高Al、Ti含量的镍基高温合金制成,此类合金的特点是,高温强度髙,但可焊性差,通常认为是不可焊材料。微弧火花沉积是一种低热输入的显微焊接工艺,单层沉积厚度不过几十微米,沉积过程对基材的热影响很小,基本不会引起工件变形和组织改变。大量研究表明:微弧火花沉积可以实现很多髙强度镍基高温 Turbine blades are the core components of aero / gas turbines. During service, turbine blades are prone to wear, corrosion, cracking and other early damage. Because blades are expensive, replacement parts are expensive to repair. Turbine blades are usually made of a nickel-base superalloy with high Al and Ti content. Such alloys are characterized by high temperature strength 髙, but poor solderability and are generally considered to be non-weldable materials. Micro-arc spark deposition is a low-heat input micro-welding process, the thickness of single-layer deposition, but tens of microns, the deposition process of thermal effects on the substrate is small, the basic deformation and will not cause changes in the organization. Numerous studies show that micro-arc spark deposition can achieve a lot of nickel-based high temperature strength