Research Article

Statistical Modeling and Optimization of Laser Cladding Stellite 6/WC Composite Coating

Table 5

Variance analysis of the porosity area of the cladding layer.

SourceSum of squaresdfMean squareF

Model2.684 × 141.917 × 3.91000.0078Significant
LP4.653 × 14.653 × 9.48000.0082
V2.574 × 12.574 × 0.52440.4809
CSD8.618 × 18.618 × 17.56000.0009
WCC2.077 × 12.077 × 4.23000.0588
V × WCC7.483 × 17.483 × 15.25000.0016
Residual6.871 × 144.908 × 
Lack of fit4.868 × 104.868 × 0.97250.5612Not significant
Pure error2.002 × 45.006 × 
Correlation total3.371 × 28
R20.7962Adeq Precision7.0809