Efek zat pemicu inhibisi pada korosi logam radiator mobl oleh air sumur.

Mustofa , M. Toha (1996) Efek zat pemicu inhibisi pada korosi logam radiator mobl oleh air sumur. Undergraduate thesis, FMIPA UNDIP.

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Abstract

Oksigen yang terdapat dalam air yang digunakan pada radiator sebagai pendingin mesin mobil, ternyata mampu mengoksidasi logam radiator. Hal ini akan mengakibatkan korosi pada radiator. Pemberian zat pemicu inhibisi K CrO, NaNO2 dan Zn(NO )2.4H20 bertujuan untuk menghamgat korosi logam radiator dengan membentuk selaput film. Senyawa K Cr0 membentuk selaput film Fe20 dan Cr 04, sedangkan KaN04 membentuk selaput film Fe283 . Selaput film tersebul melindungi logam dari korosi. Penambahan Zn(NO3) .4H20 menghasilkan endapan Zn(OH)2 yang menempel dan melindungi logam dari korosi. Zat yang terlarut dalam air, seperti NO3 dan 02 ternyata mempengaruhi efisiensi zat pemicu inhibisi, sehingga K Cr0 menghasilkan efisiensi 24%, NaNO sebesar -0,028% daA ZntNO3)2.4H20 sebesar -24,50%. 2 Water that contain oksigen in the radiator that used for cooling the car machine can oxidize metal radiator.This problem will cause corrosion to the radiator. Giving the inhibition starter substances K2Cr04, NaNO., and Zn(NO3)2.4H 0 is one of many metodes to prevent corrosion of meal radiator, by forming film membrane. K Cr04 be able to form film membrane of Fe20 and Cr203. While NaNO form film membran of Fe203. Those ?ilm membrane protect the metal from corrosion. Adding Zn(NO3)2.4H20 produce sediment Zn(OH)2 which stick and protect metal from corrosion. The dissolved substances in the water, like N0 and 02 are able to discrease the efisience of starter substances inhibition, so KCr0 efisience result 24%, NaNO2 about -0,028% and Zn(NO3)24:4H20 about -24,50%.

Item Type:Thesis (Undergraduate)
Subjects:Q Science > QD Chemistry
Divisions:Faculty of Science and Mathematics > Department of Chemistry
ID Code:30603
Deposited By:Mr UPT Perpus 1
Deposited On:03 Nov 2011 10:24
Last Modified:03 Nov 2011 10:24

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