A Comparative Study of the Inhibitory Effect of Gum Exudates from Khaya senegalensis and Albizia ferruginea on the Corrosion of Mild Steel in Hydrochloric Acid Medium

Table 5

Corrosion rates of mild steel and inhibition efficiencies of KS and AF gums at 303 K and 333 K for the corrosion of mild steel in 0.1 M HCl.

System	Inhibition efficiency (%)		Corrosion rate (gh^−1cm^−2)
	KS	AF	KS	AF
Blank at 303 K	—	—	0.000329	0.000329
0.1 g at 303 K	58.75	43.53	0.000201	0.000282
0.2 g at 303 K	62.93	48.05	0.000143	0.000221
0.3 g at 303 K	71.16	53.93	0.000125	0.000219
0.4 g at 303 K	77.37	55.91	0.000122	0.000176
0.5 g at 303 K	82.56	66.80	0.000118	0.000168
Blank at 333 K	—	—	0.001863	0.001863
0.1 g at 333 K	55.53	36.74	0.000917	0.001429
0.2 g at 333 K	58.10	39.85	0.000803	0.001389
0.3 g at 333 K	65.05	43.60	0.000676	0.001333
0.4 g at 333 K	72.62	53.10	0.000648	0.001301
0.5 g at 333 K	76.87	60.36	0.000581	0.001294