Düşük Karbon Çeliğinin Asidik Ortamdaki Korozyonuna Karşı İnhibitör Özelliği Gösteren 4-Okso-Kinazolin Türevi Katyonik Yüzey Aktif Maddelerin Sentezi

Year 2018, Volume: 22 Issue: 3, 986 - 1000, 01.06.2018

Serkan Öztürk

https://doi.org/10.16984/saufenbilder.350569

Cited By: 5

Abstract

 Birçok ülkede olduğu gibi bizim
ülkemizde de metal korozyonunu önlemeye yönelik kullanılan yöntemlerden biri
uygun inhibitör kullanımıdır. Bu amaç doğrultusunda bu çalışmada,
4-okso-kinazolin türevi olan uzun karbon zinciri içeren 3 adet katyonik
piridinyum yüzey aktif madde sentezlenmiş ve 1.0 M HCl asit çözeltisi ortamında
metal korozyonuna karşı inhibisyon etkinlikleri incelenmiştir. Sentezlenen
bileşiklerin yapıları spektroskopik yöntemlerle aydınlatıldıktan sonra yapılan
asidik ortamdaki korozyon testleri, oda sıcaklığında 24 saat süreyle ve metal
kuponlarındaki kütle kaybına dayalı gravimetrik metotla gerçekleştirilmiştir.
Düşük karbon çeliği kullanılarak yapılan korozyon testleri sonucunda,
inhibitörlerin değişik konsantrasyonlarında oldukça iyi inhibisyon etkinlikleri
(%87.90 - %97.37)
elde edilmiştir. İnhibisyon etkinliklerinin dışında yine kütle kaybı değerlerinden
yararlanarak inhibitörsüz ve inhibitörlü ortamlardaki korozyon hızları
hesaplanmıştır. Son olarak, kütle kaybı yöntemiyle deneysel olarak elde edilen
inhibisyon etkinliklerini desteklemek amacıyla taramalı elektron mikroskobu ile
metal yüzeylerinin görüntüleri çekilmiştir.

Keywords

Karbon çeliği, Korozyon, Korozyon inhibitörü, Kinazolin, Katyonik yüzey aktif madde, Asidik ortam

Synthesis of 4-oxo-quinazoline derivative cationic surfactants showing inhibitor properties against the corrosion of low carbon steel in acidic medium

Abstract

In our country,
as in many countries, one of the useful methods to prevent the metallic
corrosion is the use of appropiate inhibitor. For this purpose, in this study,
three cationic pyridinium surfactants that contain long carbon chain and being
with 4-oxo-quinazoline derivative group were synthesized and their corrosion
inhibition efficiencies against metallic corrosion in acidic medium were
investigated. After the characterization of the syntesized compounds via
spectroscopic methods, the corrosion test in acidic medium were done at room
temperature for 24 h by the gravimetric method based on the weight loss of

metal coupons. After result of the corrosion tests which were done using a low
carbon steel, fairly good inhibition efficiencies (91.33 % - 97.24 %) were
obtained at different inhibitor concentrations. Outside the inhibition
efficiencies, the corrosion rate values of the inhibited and uninhibited
coupons were also measured. Finally, the images of the metal surfaces were
taken using scanning electron microscopy to support the corrosion inhibition
efficiency results obtained by the weight loss method.

Keywords

Carbon steel, corrosion and corrosion inhibitor, quinazoline, cationic surfactant, acidic medium

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