Optimization of Dual Coating Using Electroless Ni-P-Nano-TiO₂ and Plasma Yttria-Stabilized Zirconia on Piston Crown and Cylinder Liner in CI Engine

Table 8

Confirmation test.

Setting level	Initial setting	Prediction	Experimental	Improvement; %
A	41	—	42
B	15.5	—	15.75
C	0.45	—	0.4
GRG	0.259	0.315	0.27	4.24