?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=%0D%0APENGARUH+PENAMBAHAN+INHIBITOR+EKSTRAK+KULIT+KAKAO%0D%0A+(THEOBROMA+CACAO)+TERHADAP+LAJU+KOROSI+BAJA+API+5L+%0D%0APADA+MEDIUM+NaCl+3%25+DAN+HCl+3%25%0D%0A&rft.creator=LIYANA+MARDOVA%2C+1417041047&rft.subject=QC+Physics&rft.description=%0D%0ATelah+dilakukan+penelitian+mengenai+inhibisi+korosi+baja+karbon+rendah+API+5L+oleh+ekstrak+ekstrak+kulit+kakao+(Theobroma+cacao)+dalam+medium+korosif+NaCl+dan+HCl+dengan+konsentrasi+masing-masing+3%25.+Pengujian+dilakukan+dengan++metode+penurunan+berat.+Laju+korosi+diuji+pada+baja+karbon+rendah+dengan+dan+tanpa+inhibitor+ekstrak+kulit+kakao+selama+7+hari+dengan+konsentrasi+0+ppm%2C+500+ppm%2C+1000+ppm%2C+dan+1500+ppm.+Hasil+penelitian+menunjukkan+semakin+besar+konsentrasi+inhibitor+ekstrak+ekstrak+kulit+kakao+yang+digunakan+maka+laju+korosi+akan+semakin+berkurang+dan+kemampuan+menginhibisi+korosi+akan+meningkat.+Efisiensi+korosi+yang+paling+besar+terjadi+pada+konsentrasi+1500+ppm+baik+untuk+NaCl+dan+HCl+dengan+efisiensi+masing-masing+adalah+93%2C39%25+dan+73%2C6%25.+Hasil+karakterisasi+X-Ray+Diffraction+(XRD)+memperlihatkan+bahwa+fasa+yang+terbentuk+adalah+Fe+murni.+Karakterisasi+Secondary+Electron+Microscopy+(SEM)+memperlihatkan+cluster+(gumpulan)+tidak+merata+dan+ukuran+lebih+kecil%2C+lubang+(hole)+dan+retakan+(crack)+juga+lebih+sedikit+dengan+penambahan+dibandingkan+tanpa+penambahan+inhibitor+ekstrak+kulit+kakao.+Karakterisasi+Energy+Dispersive+Spectroscopy+(EDS)+pada+sampel+tanpa+penambahan+inhibitor+didapatkan+unsur+Cl.%0D%0A%0D%0AKata+kunci%3A+Inhibitor+korosi%2C+baja+karbon+API+5L%2C+HCl+dan+NaCl%2C+ekstrak+kulit+kakao%2C++XRD%2C+SEM-EDS.%0D%0A%0D%0A%0D%0AABSTRACT%0D%0A%0D%0A%0D%0AThe+corrosion+inhibition+of+low+carbon+API+5L+by+cocoa+peel+extract+(Theobroma+cacao)+in+corrosive+medium+of+natrium+cloride+and+hydrocloride+acid+of+3%25+has+been+investigated.+The+test+was+carried+out+byweight+loss+method.+Corrosion+rate+was+tested+on+low+carbon+steel+with+and+without+the+tea+leaves+extract+for+7+days+with+concentration+of+0%2C+500%2C+1000%2C+and+1500+ppm.+The+research+result+show+that+the+more+concentration+of+inhibitor+cocoa+peel+extract%2C+the+lower+corrosion+rate+so+that+capability+of+inhibition+will+increase.+The+biggest+inhibition+efficiency+corrosion+occured+at+concentrations+of+1500+ppm+in+NaCl+and+HCl+with+efficiency+of+93%2C39%25+and+73%2C6%25+respectively.+The+X-Ray+Diffraction+(XRD)+result+shows+that+the+phase+was+Fe.+Scanning+Electron+Microscopy+(SEM)+shows+that+the+grain+size+and+cluster+is+bigger%2C+hole+and+crack+also+shows+is+lower+of+with+inhibitor+than+without+inhibitor.+Energy+Dispersive+Spectroscopy+(EDS)+shows+that+there+is+Cl+element+on+sample+without+inhibitor.%0D%0AKey+words.+corrosion+inhibition%2C+API+5L%2C+HCl+and+NaCl%2C+Theobroma+cacao+extract%2C+XRD%2C+SEM-EDS.%0D%0A%0D%0A&rft.publisher=UNIVERSITAS+LAMPUNG&rft.date=2018-06-07&rft.type=Skripsi&rft.type=NonPeerReviewed&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F31910%2F1%2F2.%2520ABSTRAK.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F31910%2F3%2FSKRIPSI%2520FULL.pdf&rft.format=text&rft.identifier=http%3A%2F%2Fdigilib.unila.ac.id%2F31910%2F2%2FSKRIPSI%2520TANPA%2520BAB%2520PEMBAHASAN.pdf&rft.identifier=++LIYANA+MARDOVA%2C+1417041047++(2018)++PENGARUH+PENAMBAHAN+INHIBITOR+EKSTRAK+KULIT+KAKAO+(THEOBROMA+CACAO)+TERHADAP+LAJU+KOROSI+BAJA+API+5L+PADA+MEDIUM+NaCl+3%25+DAN+HCl+3%25.++UNIVERSITAS+LAMPUNG%2C+FAKULTAS+MATEMATIKA+DAN+ILMU+PENGETAHUAN+ALAM+.+++++&rft.relation=http%3A%2F%2Fdigilib.unila.ac.id%2F31910%2F