Table 6 Surface parameters derived from profilometer surface analysis of the corroded T95 immersed in 15 wt% HCl without and with additives at 60 °C and 90 °C after 4 h of immersion.

From: Effective inhibition of T95 steel corrosion in 15 wt% HCl solution by aspartame, potassium iodide, and sodium dodecyl sulphate mixture

Systems/concentration

Surface roughness

60 °C

90 °C

Ra (µm)

Rq (µm)

Rt (µm)

Ra (µm)

Rt (µm)

Rt (µm)

Abraded T95

0.154

0.186

2.119

0.154

0.186

2.119

Blank

2.269

2.933

39.708

4.350

5.679

61.417

ASP

0.925

1.170

28.902

3.736

5.029

93.215

ASP + KI

0.923

1.155

32.936

2.279

2.992

30.510

Formulation

0.435

0.155

4.204

0.550

1.599

14.853

  1. ASP, aspartame; KI, potassium iodide; Formulation = ASP + KI + SDS.
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