摘要
本文研究在１Ｃｒ１８Ｎｉ９Ｔｉ基体上采用激光熔覆和离子喷焊二种工艺形成的涂层对耐磨性的影响。使用５ｋＷ横流ＣＯ２激光器对预置在基体上的Ｃｏ基自熔合金粉末进行单道或多道扫描，得到的熔层与等离子焊层对比结果是：激光熔层缺陷率低，成品率高，其结构致密均匀，晶粒细小，成分稀释率更小，对基体热影响小，熔层硬度与强韧性更高。性能试验证明：激光熔层具有更高的抗擦伤磨损和抗冲击滑动高温磨损性能，耐磨性提高了一倍左右。
In this paper, the effect of coatings, which are formed with laser cladding and plasma spurt welding on 1Cr18Ni9Ti base metal, on wear resistance is studied. It is used that a 5kW laser with CO 2 flow transverse for cladding Co base alloy powder preplaced on the stainless steel base metal. Compared with the plasma spurt coatings, the laser cladding coats have lower rate of spoiled products and higher rate of finished products. Their microstructure are extremely fine. They have close texture and small size grain. Their dilution diluted by the compositions of their base metal and hot effect on base metal are less. The hardness、 toughness and strength of the laser layers are higher. The wear test shows that the laser layers have higher property of anti friciton, anti scour and anti high temperature. The wear resistance of laser layer is about one time higher than that of the plasma welding layer.
出处
《光学技术》
EI
CAS
CSCD
1998年第6期39-41,共3页
Optical Technique
