An Ecofriendly Initiative for the Corrosion Inhibition of Mild Steel in 1 M HCl Using Tecoma capensis Flower Extract

Table 2

Inhibition efficiency as a function of immersion time and concentration for TCF in 1 M HCl.

Conc.%	1/2 h		1 h		3 h		6 h		12 h		24 h
	CR; (mpy)	IE; (%)	CR; (mpy)	IE; (%)	CR; (mpy)	IE; (%)	CR; (mpy)	IE; (%)	CR; (mpy)	IE; (%)	CR; (mpy)	IE; (%)
Blank	1032		1190		1238		2197		1561		1209
0.1	333	67.8	260	78.1	350	71.7	625	71.6	601	61.5	545	54.9
0.2	307	70.3	226	81	264	78.6	426	80.6	474	69.8	495	59.1
0.3	273	73.5	200	83.2	233	81.2	315	85.7	435	72.1	458	62.1
0.4	196	81	162	86.4	166	86.6	226	89.7	342	78.1	377	68.8
0.5	179	82.7	145	87.8	148	88.0	200	90.9	318	79.6	312	74.2
0.6	154	85.1	128	89.2	135	89.1	143	93.5	279	82.2	241	80.1
0.7	146	85.9	102	91.4	90	92.7	114	94.8	202	87.1	160	86.8