[Retracted] Inhibition Effect of Substituted Thiadiazoles on Corrosion Activity of N80 Steel in HCl Solution

Table 4

Corrosion parameters, namely, corrosion rate (CR), surface coverage (𝜃), and inhibition efficiency IE (%) of N80 steel in 15% HCl in the presence and the absence of the inhibitor at different temperatures, obtained from weight loss measurements.

Inhibitor	Conc (ppm)	303 K			313 K			323 K			333 K
		CR (mmpy)	𝜃	IE %	CR (mmpy)	𝜃	IE %	CR (mmpy)	𝜃	IE %	CR (mmpy)	𝜃	IE %
Blank	—	2.672	—	—	9.084	—	—	17.943	—	—	60.348	—	—
	20	0.983	0.632	63.2	2.906	0.680	68.0	4.719	0.737	73.7	14.00	0.768	76.8
	50	0.863	0.677	67.7	2.416	0.734	73.4	3.893	0.783	78.3	10.00	0.833	83.3
AMPT	100	0.673	0.748	74.8	1.607	0.823	82.3	2.440	0.864	86.4	6.155	0.898	89.8
	150	0.529	0.802	80.2	1.317	0.855	85.5	1.920	0.893	89.3	5.129	0.915	91.5
	200	0.446	0.823	82.3	1.090	0.880	88.0	1.596	0.911	91.1	4.586	0.924	92.4
	20	1.060	0.603	60.3	3.148	0.653	65.3	5.678	0.683	68.3	16.66	0.724	72.4
	50	0.948	0.645	64.5	2.831	0.688	68.8	4.670	0.739	73.9	12.69	0.789	78.9
APT	100	0.790	0.704	70.4	2.128	0.766	76.6	3.583	0.800	80.0	9.975	0.839	83.9
	150	0.600	0.775	77.5	1.769	0.805	80.5	3.019	0.832	83.2	8.189	0.864	86.4
	200	0.552	0.793	79.3	1.349	0.851	85.1	2.486	0.861	86.1	6.914	0.894	89.4
	20	1.140	0.573	57.3	3.455	0.619	61.9	6.263	0.651	65.1	19.60	0.675	67.5
	50	1.053	0.606	60.6	3.332	0.633	63.3	5.363	0.701	70.1	14.83	0.754	75.4
ACPT	100	0.869	0.674	67.4	2.503	0.725	72.5	4.419	0.754	75.4	12.40	0.794	79.4
	150	0.708	0.735	73.5	2.082	0.770	77.0	3.676	0.795	79.5	10.72	0.822	82.2
	200	0.649	0.757	75.7	1.637	0.819	81.9	3.136	0.825	82.5	8.762	0.855	85.5