Processing Window and Microstructure of NiCoCrAlY Coating Deposited on Cast Iron Using Multilayer Laser Cladding

Table 5

Size of the columnar dendrite region and its variation with the number of deposited layers.

Layer number	1	2	3	4	5	6
Total height of coating (mm)	0.85	1.05	1.25	1.42	1.56	1.66
Thickness of columnar dendrite region (mm)	0.34	0.47	0.61	0.80	0.97	1.06
RC (%)	40.0	44.8	48.8	56.3	62.2	63.9