Compared with TIG clad layer, the laser cladding layer have the characters of small dilution rate, fine microstructure, narrow heat-affected zone (HAZ), narrow alloy elements segregation, high Vickers hardness, excellent wear-resistance, high contents of alloy elements and low contents of Fe in the clad layers.
The structures from top to bottom are sequentially named as InGaAs contact layer, InAlAs cladding layer, InAlGaAs grading layer, InGaAs absorption layer, InAlGaAs grading layer, InAlAs charge layer, InAlAs multiplication layer, InAlAs cladding layer, InP contact layer, and InP substrate.
This study employed the Taguchi Method to determine the optimal parameters for tenon repair on a steam turbine blade using multi-layer laser cladding.
With the increment of Co content in clad layer, the cracking susceptibility of the laser cladding layer decreases and the number of overlapping tracks with hypoeutectic structure increases.
The vertical divergence angle of GaAs-based laser diodes (LD) can be reduced by usually increasing waveguide thickness and inserting low index layers between waveguide layers and cladding layers, but it will also induce an increase of the threshold current.
The results show that the laser scanning speed has the most significant influence on the width, height and depth of laser cladding layer, and the powder feeding rate has the most important influence on the hardness of laser cladding layer.
Fiber optic is made of a plastic or glass core surrounded by a layer of cladding material [5].
The powder mixture of Stellite-6 and tungsten carbide (WC) in the range of 0 wt.% 47 wt.% WC fraction with constant chemical composition multi-layer cladding (CCCMLC) and functionally gradient material multi-layer cladding (FGMMLC) were deposited on mild steel (JIS-SM400B) plates by a 2.4 kW cw CO2 laser.
As seen in Table2, the valley splitting value converges to 93 meV using 80-layer cladding.
