Corrosion Inhibition of Cu-Ni (90/10) Alloy in Seawater and Sulphide-Polluted Seawater Environments by 1,2,3-Benzotriazole

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="8"><hr/></td></tr><tr class="thead"><td align="left" rowspan="2">Concentration of BTAH (mM)</td><td align="center"><span style="width: 20.4375px;"><svg height="15.4" id="M49" style="vertical-align:-3.39069pt" version="1.1" viewbox="0 0 20.4375 15.4" width="20.4375" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,11.112)"><path d="M627 18l-10 -26q-79 6 -116 27t-69 76q-41 71 -71 138q-13 29 -27.5 39t-42.5 10h-46l-27 -145q-13 -74 -2.5 -88.5t78.5 -20.5l-6 -28h-271l5 28q66 6 82.5 21.5t30.5 87.5l71 387q12 66 2 78.5t-77 19.5l8 28h233q102 0 147 -29q65 -43 65 -129q0 -69 -45.5 -117
t-115.5 -72q40 -86 66 -133q39 -68 65 -101q28 -37 73 -51zM491 483q0 67 -33.5 101t-91.5 34q-35 0 -51 -10q-13 -8 -20 -48l-45 -245h49q71 0 113 28q79 52 79 140z" id="x1D445"></path></g>
<g transform="matrix(.012,-0,0,-.012,11.013,15.187)"><path d="M390 111l17 -21q-34 -45 -80 -73.5t-89 -28.5q-91 0 -146 62t-55 147q0 118 101 195q74 57 149 57h1q59 0 90 -27q16 -14 16 -30q0 -15 -12 -29t-21 -14q-8 0 -19 11q-44 41 -101 41q-52 0 -87.5 -42.5t-35.5 -117.5q0 -49 15 -87t39 -58t49 -30t48 -10q33 0 60.5 12
t60.5 43z" id="x63"></path></g><g transform="matrix(.012,-0,0,-.012,16.117,15.187)"><path d="M298 36l-68 -35q-25 -13 -42 -13q-98 0 -98 119v290h-69l-4 11l28 29h45v72l65 67l14 -2v-137h113q8 -8 6 -21t-12 -19h-107v-256q0 -96 59 -96q29 0 61 17z" id="x74"></path></g>
</svg></span></td><td align="center">(CPE)<sub>dl</sub></td><td align="center" rowspan="2"><span style="width: 14.9875px;"><svg height="11.825" id="M50" style="vertical-align:-3.27605pt" version="1.1" viewbox="0 0 14.9875 11.825" width="14.9875" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,7.675)"><path d="M495 86q-46 -47 -87 -72.5t-63 -25.5q-43 0 -16 107l49 210q7 34 8 50.5t-3 21t-13 4.5q-35 0 -109.5 -72.5t-115.5 -140.5q-21 -75 -38 -159q-50 -10 -76 -21l-6 8l84 340q8 35 -4 35q-17 0 -67 -46l-15 26q44 44 85.5 70.5t64.5 26.5q35 0 10 -103l-24 -98h2
q42 56 97 103.5t96 71.5q46 26 74 26q9 0 16 -2.5t14 -11.5t9.5 -24.5t-1 -44t-13.5 -68.5q-30 -117 -47 -200q-4 -19 -3.5 -25t6.5 -6q21 0 70 48z" id="x1D45B"></path></g>
<g transform="matrix(.012,-0,0,-.012,8.6,11.762)"><path d="M384 0h-275v27q67 5 81.5 18.5t14.5 68.5v385q0 38 -7.5 47.5t-40.5 10.5l-48 2v24q85 15 178 52v-521q0 -55 14.5 -68.5t82.5 -18.5v-27z" id="x31"></path></g>
</svg></span></td><td align="center"><span style="width: 31.0875px;"><svg height="15.25" id="M51" style="vertical-align:-3.27605pt" version="1.1" viewbox="0 0 31.0875 15.25" width="31.0875" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,11.112)"><path d="M627 18l-10 -26q-79 6 -116 27t-69 76q-41 71 -71 138q-13 29 -27.5 39t-42.5 10h-46l-27 -145q-13 -74 -2.5 -88.5t78.5 -20.5l-6 -28h-271l5 28q66 6 82.5 21.5t30.5 87.5l71 387q12 66 2 78.5t-77 19.5l8 28h233q102 0 147 -29q65 -43 65 -129q0 -69 -45.5 -117
t-115.5 -72q40 -86 66 -133q39 -68 65 -101q28 -37 73 -51zM491 483q0 67 -33.5 101t-91.5 34q-35 0 -51 -10q-13 -8 -20 -48l-45 -245h49q71 0 113 28q79 52 79 140z" id="x1D445"></path></g>
<g transform="matrix(.012,-0,0,-.012,11.013,15.187)"><path d="M523 15v-15h-220v15c31.3333 3.33333 50.3333 9.33333 57 18c7.33545 9.33333 11.0021 31.3333 11 66v261c0 25.3337 -5.66666 41.0004 -17 47c-10.6668 6.66666 -39.3335 10 -86 10h-84v-327c0 -28 4.5 -47 13.5 -57s27.1667 -16 54.5 -18v-15h-220v15
c28 0.666667 46.3333 6.33333 55 17c8.66666 10.6667 13 32 13 64v321h-67v33h68c6 53.3337 13 92.0004 21 116c8.66667 23.3333 25.6667 46.6667 51 70c37.3333 31.3333 86.3333 47 147 47c39.3336 0 70.0003 -6 92 -18c22 -12.0018 33 -28.6685 33 -50
c0 -27.3344 -11.6667 -41.0011 -35 -41c-11.3333 0 -22.8333 7 -34.5 21s-24.6667 28 -39 42s-30.1667 21 -47.5 21c-30 -0.00128174 -55 -10.6679 -75 -32c-12.6667 -12.6667 -20.8333 -27.6667 -24.5 -45c-3.66667 -17.3339 -5.5 -46.0005 -5.5 -86v-45h154
c28.6667 0.00170898 66.6667 3.6684 114 11l5 -4c-1.33334 -46.6667 -2 -79.6667 -2 -99v-259c0.00259399 -30.6667 4.66928 -51.6667 14 -63c9.33334 -11.3333 27.3333 -18.3333 54 -21z" id="xFB01"></path></g><g transform="matrix(.012,-0,0,-.012,17.652,15.187)"><path d="M238 0h-223v26q48 5 60 17t12 61v473q0 50 -10.5 60.5t-58.5 15.5v24q73 8 148 35v-608q0 -49 11.5 -61t60.5 -17v-26z" id="x6C"></path></g><g transform="matrix(.012,-0,0,-.012,20.662,15.187)"><path d="M797 0h-214v26q46 5 58 17.5t12 63.5v167q0 116 -88 116q-48 0 -112 -52q3 -18 3 -42v-195q0 -46 11 -58t53 -17v-26h-214v26q48 5 59.5 17t11.5 60v172q0 115 -88 115q-47 0 -109 -52v-235q0 -47 10 -59.5t48 -17.5v-26h-211v26q50 5 62.5 17t12.5 60v207q0 48 -9 59.5
t-52 18.5v23q79 14 139 41v-81q3 2 29 20.5t44 29.5q45 28 81 28t66 -22t46 -61q25 20 83 57q39 26 76 26q59 0 93 -40t34 -113v-193q0 -49 10.5 -60.5t54.5 -16.5v-26z" id="x6D"></path></g>
</svg></span></td><td align="center">(CPE)<sub>film</sub></td><td align="center" rowspan="2"><span style="width: 14.9875px;"><svg height="11.825" id="M52" style="vertical-align:-3.27605pt" version="1.1" viewbox="0 0 14.9875 11.825" width="14.9875" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,7.675)"><path d="M495 86q-46 -47 -87 -72.5t-63 -25.5q-43 0 -16 107l49 210q7 34 8 50.5t-3 21t-13 4.5q-35 0 -109.5 -72.5t-115.5 -140.5q-21 -75 -38 -159q-50 -10 -76 -21l-6 8l84 340q8 35 -4 35q-17 0 -67 -46l-15 26q44 44 85.5 70.5t64.5 26.5q35 0 10 -103l-24 -98h2
q42 56 97 103.5t96 71.5q46 26 74 26q9 0 16 -2.5t14 -11.5t9.5 -24.5t-1 -44t-13.5 -68.5q-30 -117 -47 -200q-4 -19 -3.5 -25t6.5 -6q21 0 70 48z" id="x1D45B"></path></g>
<g transform="matrix(.012,-0,0,-.012,8.6,11.762)"><path d="M412 140l28 -9q0 -2 -35 -131h-373v23q112 112 161 170q59 70 92 127t33 115q0 63 -31 98t-86 35q-75 0 -137 -93l-22 20l57 81q55 59 135 59q69 0 118.5 -46.5t49.5 -122.5q0 -62 -29.5 -114t-102.5 -130l-141 -149h186q42 0 58.5 10.5t38.5 56.5z" id="x32"></path></g>
</svg></span></td><td align="center" rowspan="2">IE (%)</td></tr><tr class="thead"><td align="center">(kΩ cm<sup>2</sup>)</td><td align="center">(<svg height="12.175" id="M53" style="vertical-align:-3.56265pt" version="1.1" viewbox="0 0 9.5625 12.175" width="9.5625" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,7.675)"><path d="M538 96q-38 -45 -84 -76.5t-71 -31.5q-44 0 -15 117q12 49 18 89h-2q-99 -128 -163 -178q-36 -28 -70 -28q-26 0 -44 38h-2q-16 -69 -16 -129q0 -43 11 -75.5t24 -42.5l1 -6q-7 -12 -24.5 -23t-37.5 -11q-40 0 -40 76q0 52 35 202l94 407l78 24l5 -5q-32 -122 -72 -310
q-7 -33 0 -55t25 -22q36 0 105.5 75t107.5 145l32 146l75 26h10q-50 -197 -78 -347q-7 -38 6 -38q7 0 31 17t47 39z" id="x1D707"></path></g>
</svg>F cm<sup>−2</sup>)</td><td align="center">(kΩ cm<sup>2</sup>)</td><td align="center">(<svg height="12.175" id="M54" style="vertical-align:-3.56265pt" version="1.1" viewbox="0 0 9.5625 12.175" width="9.5625" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,7.675)"><path d="M538 96q-38 -45 -84 -76.5t-71 -31.5q-44 0 -15 117q12 49 18 89h-2q-99 -128 -163 -178q-36 -28 -70 -28q-26 0 -44 38h-2q-16 -69 -16 -129q0 -43 11 -75.5t24 -42.5l1 -6q-7 -12 -24.5 -23t-37.5 -11q-40 0 -40 76q0 52 35 202l94 407l78 24l5 -5q-32 -122 -72 -310
q-7 -33 0 -55t25 -22q36 0 105.5 75t107.5 145l32 146l75 26h10q-50 -197 -78 -347q-7 -38 6 -38q7 0 31 17t47 39z" id="x1D707"></path></g>
</svg>F cm<sup>−2</sup>)</td></tr><tr><td class="thead-hr" colspan="8"><hr/></td></tr><tr><td align="left">0</td><td align="center">4.72</td><td align="center">12.20</td><td align="center">0.67</td><td align="center">0.01</td><td align="center">15.12</td><td align="center">0.66</td><td align="center">—</td></tr><tr><td align="left">0.82</td><td align="center">44.8</td><td align="center">0.096</td><td align="center">0.73</td><td align="center">5.34</td><td align="center">0.290</td><td align="center">0.68</td><td align="center">89.48</td></tr><tr><td align="left">1.67</td><td align="center">362.5</td><td align="center">0.058</td><td align="center">0.84</td><td align="center">80.3</td><td align="center">0.137</td><td align="center">0.72</td><td align="center">98.70</td></tr><tr><td align="left">2.50</td><td align="center">620.3</td><td align="center">0.045</td><td align="center">0.91</td><td align="center">250.6</td><td align="center">0.072</td><td align="center">0.73</td><td align="center">99.24</td></tr><tr><td align="left">3.33</td><td align="center">1046.0</td><td align="center">0.034</td><td align="center">0.94</td><td align="center">557.8</td><td align="center">0.060</td><td align="center">0.78</td><td align="center">99.55</td></tr><tr class="table-tr"><td colspan="8"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Impedance parameters of Cu-Ni (90/10) alloy in seawater in the presence of different concentrations of BTAH at 48-hour immersion period. (Temperature: 30°C).

International Scholarly Research Notices

tab4

Table 4

Table 4: Corrosion Inhibition of Cu-Ni (90/10) Alloy in Seawater and Sulphide-Polluted Seawater Environments by 1,2,3-Benzotriazole 