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Abstrak :
Kemampuan inhibitor Triazine dalam menginhibisi baja karbon API-5L X60 dalam lingkungan NaCl 3.5% diinvestigasi dengan menggunakan metode Polarisasi Linier Linier Polarization Resistance (LPR) dalam berbagai variasi konsentrasi. Konsentrasi yang digunakan pada penelitian kali ini adalah 0 ppm, 50 ppm, 10 ppm, 150 ppm, 200 ppm, dan 250 ppm. Hasil pengujian menunjukkan bahwa konsentrasi optimum dalam menurunkan laju korosi terdapat pada 150 ppm dengan laju korosi sebesar 0,4457841 mm/year, sedangkan nilai Rp terus meningkat dan optimum pada konsentrasi 250 ppm dengan nilai sebesar 838,85 Ohm. Kurva laju korosi vs konsentrasi inhibitor menunjukkan bahwa konsentrasi optimum inhibitor Triazine dalam menurunkan laju korosi terdapat pada konsentrasi 150 ppm. Efisiensi terbesar terdapat pada konsentrasi 150 ppm dengan nilai 63,94% dan berdasarkan Rp nilai efisiensi optimum pada konsentrasi 250 ppm dengan nilai sebesar 55,16%. Kinerja inhibitor pada pengujian ini masih kurang baik karena masih jauh dari efisiensi inhibitor yang baik yaitu rentang nilai 85-90%. ......The performance of Triazine based commercial corrosion inhibitor on carbon stel API 5L X60 on NaCl 3.5 % solution was investigated using Linear Polarization Resistance Method or LPR. The Inhibitor concentration that used in this experiment were 0 ppm, 50 ppm, 100 ppm, 150 ppm, 200 ppm, and 250 ppm. Experimental results showed that the optimum concentration to decrease the corrosion rate is 150 ppm with the corrosion rate in 0,4457841 mm/year , while the optimum polarization resistance is 838,85 Ohm at 250 ppm. The plot of corrosion rate vs inhibitor concentration show the optimum Triazine inhibitor concentration for decreasing corrosion rate is 150 ppm. There optimum efficiency at a concentration of 150 ppm of 63.94 % and Rp optimum efficiency at a concentration of 250 ppm of 55.16 % . Inhibitor performance is still not good because it is still far from a good inhibitor efficiency is 85-90 % range of values.

Abstrak :
[ABSTRAK Kemampuan inhibitor Triazine dalam menginhibisi baja karbon API 5L X60 dalam lingkungan NaCl 3.5% diinvestigasi dengan menggunakan metode Polarisasi Tafel dalam berbagai variasi konsentrasi. Konsentrasi yang digunakan pada penelitian kali ini adalah 0 ppm, 50 ppm, 10 ppm, 150 ppm, 200 ppm, dan 250 ppm. Efisiensi optimum yang didapatkan adalah sebesar 50.28% dengan konsentrasi inhibitor triazine sebesar 150 ppm. Dengan pengujian FTIR, maka dibuktikan bahwa senyawa triazine mampu menginhibisi permukaan baja API 5L X60. Penelitian ini juga membuktikan bahwa inhibitor triazine merupakan inhibitor korosi karena mampu menurunkan laju korosi.Inhibitor triazine termasuk kedalam jenis inhibitor campuran.

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ABSTRACT The corrosion rate from Triazine-based inhibitors on API 5-L X60 steel at NaCl 3,5% environtment were investigated using the Tafel Polarization method. The Triazine compounds that successfully absorbed onto steel surface were investigated using the Fourier Transform Infra Red (FTIR). Triazine?s efficiency depends on the concentration that given onto environtment. The highest efficiency of Triazine inhibitor is 50.28% with the optimize concentration 150 ppm. The investigated Triazine inhibitors were proven as the corrosion inhibitors because it can reduces the corrosion rate. Triazine inhibitors are also mixed type inhibitors.;The corrosion rate from Triazine-based inhibitors on API 5-L X60 steel at NaCl 3,5% environtment were investigated using the Tafel Polarization method. The Triazine compounds that successfully absorbed onto steel surface were investigated using the Fourier Transform Infra Red (FTIR). Triazine?s efficiency depends on the concentration that given onto environtment. The highest efficiency of Triazine inhibitor is 50.28% with the optimize concentration 150 ppm. The investigated Triazine inhibitors were proven as the corrosion inhibitors because it can reduces the corrosion rate. Triazine inhibitors are also mixed type inhibitors. , The corrosion rate from Triazine-based inhibitors on API 5-L X60 steel at NaCl 3,5% environtment were investigated using the Tafel Polarization method. The Triazine compounds that successfully absorbed onto steel surface were investigated using the Fourier Transform Infra Red (FTIR). Triazine’s efficiency depends on the concentration that given onto environtment. The highest efficiency of Triazine inhibitor is 50.28% with the optimize concentration 150 ppm. The investigated Triazine inhibitors were proven as the corrosion inhibitors because it can reduces the corrosion rate. Triazine inhibitors are also mixed type inhibitors. ]

Abstrak :
Kemampuan inhibitor Imidazoline dalam menginhibisi baja karbon API 5L Grade B dalam lingkungan NaCl 3.5 % diinvestigasi dengan menggunakan metode Polarisasi Tahanan Linier atau Linier Polarization Resistance (LPR) dalam berbagai variasi konsentrasi. Konsentrasi yang digunakan pada penelitian kali ini adalah 0 ppm, 50 ppm, 10 ppm, 150 ppm, 200 ppm, dan 250 ppm. Hasil pengujian menunjukkan bahwa konsentrasi optimum dalam menurunkan laju korosi terdapat pada 200 ppm dengan laju korosi sebesar 0,0005 mm/year, sedangkan nilai Rp terus meningkat dan optimum pada konsentrasi 250 ppm dengan nilai sebesar 579,042 Ohm. Kurva laju korosi vs konsentrasi inhibitor menunjukkan bahwa konsentrasi optimum inhibitor imidazoline dalam menurunkan laju korosi terdapat pada konsentrasi 200 ppm. ......The performance of Imidazoline based commercial corrosion inhibitor on carbon stel API 5L Grade B on NaCl 3.5 % solution was investigated using Linear Polarization Resistance Method or LPR. The Inhibitor concentration that used in this experiment were 0 ppm, 50 ppm, 100 ppm, 150 ppm, 200 ppm, and 250 ppm. Experimental results showed that the optimum concentration to decrease the corrosion rate is 200 ppm with the corrosion rate is 0,0005 mm/year , while the optimum polarization resistance is 579,042 Ohm at 250 ppm. The plot of corrosion rate vs inhibitor concentration show the optimum imidazoline inhibitor concentration for decreasing corrosion rate is 200 ppm.