Compositional Changes During Plasma Spraying and Incubation in SBF

1 Microstructural and Compositional Changes During Plasma Spraying and Incubation in SBF 

The three types of coating were deposited onto Ti6Al4V substrates. The coating thickness varied between 160 and 270 pm. The parameter space used in the statistical design matrix is shown in Table 6.2. Table 6.3 shows the coded relevant parameters (in bold) for optimum values of surface roughness (Kj, porosity (P) and tensile adhesion strength (a). 

The coating properties varied as follows porosity 3-9%, surface roughness 9-22 pm and tensile adhesion strength 30-58 MPa (Table 6.4). 

Parameter Lower level (-1) Centre point (0) Upper level (+1) 

Parameter Surface roughness Ra Coating porosity P Adhesion strength a 

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