TABLE 5.

Electrochemical parameters from EIS equivalent electrical circuit of ZP pigment-modified epoxy specimens.

Samples		Neat epoxy				ZP modified epoxy
Time (months)	Rs (Ω⋅cm2)	Cf (S⋅sn/cm2) (n)	Rf (Ω⋅cm2)	Cdl (S⋅sn/cm2) (n)	Rct (Ω⋅cm2)	Cf (S⋅sn/cm2) (n)	Rf (Ω⋅cm2)	Cdl (S⋅sn/cm2) (n)	Rct (Ω⋅cm2)
Without aging	0.1	1.353×10−8	3.566×104	2.14×10−8 (0.84)	6.91×104	1.353×10−9	3.566×104	1.28×10−5 (0.95)	5.36×105
November	—	2.362×10−8	4.146×104	5.52×10−8 (0.80)	7.32×104	1.623×10−8	2.315×105	3.24×10−5 (0.95)	4.36×105
December	—	2.352×10−8	4.963×104	6.14×10−8 (0.96)	5.32×104	2.585×10−8	1.873×105	3.47×10−5 (0.81)	5.32×104
January	—	3.654×10−8	4.871×104	5.47×10−8 (0.91)	4.39×103	2.082×10−8	1.845×104	4.23×10−6 (0.85)	7.69×105
February	—	2.365×10−8	4.321×104	4.74×10−8 (0.96)	6.32×104	4.161×10−6	2.033×105	4.98×10−6 (0.84)	8.71×105
March	—	2.847×10−8	5.351×104	5.85×10−8 (0.94)	6.12×104	7.767×10−6	4.161×105	4.46×10−6 (0.90)	6.11×104
April	—	3.621×10−8	6.354×104	5.32×10−8 (0.85)	5.32×103	3.475×10−6	2.214×104	4.25×10−6 (0.81)	4.05×105
May	—	2.059×10−8	4.247×104	4.22×10−8 (0.87)	2.62×104	9.196×10−7	1.354×105	2.14×10−5 (0.84)	7.76×105
June	—	3.649×10−8	5.385×104	5.55×10−8 (0.82)	2.59×103	2.088×10−6	1.963×106	1.53×10−6 (0.91)	4.12×104
July	—	3.545×10−8	7.147×104	4.76×10−8 (0.88)	1.42×102	7.804×10−6	1.364×105	2.65×10−8 (0.83)	2.28×103
August	—	2.365×10−8	5.321×104	4.22×10−8 (0.94)	5.74×104	3.354×10−7	5.324×106	4.48×10−6 (0.89)	4.32×105
September	—	3.214×10−8	4.825×104	4.22×10−8 (0.81)	4.87×104	2.024×10−6	2.124×106	1.66×10−5 (0.88)	6.32×104
October	—	2.365×10−8	4.135×104	4.22×10−8 (0.85)	4.12×103	4.532×10−6	3.214×105	7.18×10−6 (0.81)	1.32×104