Corrosion data of copper with and without coating.

Sample	i corr (A cm−2)	E corr (V vs. SCE)	CR (mm per year)	IE (%)	R p (Ω cm2)
Copper	2.23 × 10−5	−0.283	2.59 × 10−1	—	1.66 × 103
Urushiol	2.50 × 10−9	−0.208	2.90 × 10−5	99.99	2.30 × 106
CPA0	3.30 × 10−8	−0.204	3.83 × 10−4	99.85	1.06 × 106
CPA1	2.73 × 10−9	−0.216	3.17 × 10−5	99.99	2.27 × 106
CPA2	3.12 × 10−9	−0.176	2.47 × 10−5	99.99	2.18 × 106
CPA3	7.24 × 10−9	−0.203	8.39 × 10−5	99.97	1.53 × 106
CPAm	9.34 × 10−9	−0.235	1.08 × 10−4	99.96	1.53 × 106