Commercial azoles benzotriazole (BZT), tolyltriazole (TTA), and butyl benzotriazole (BBZT) are well known water industrial yellow metal corrosion inhibitors. BZT, TTA, and BBZT are all organic film forming species that coordinate and passivate the surface providing protection from corrosive species such as chloride and sulfates, which have been reported to be due to the stabilization of Cu(I), and providing a hydrophobic barrier on the surface. In this study the performances of BZT, TTA, and BBZT are analyzed based on their bulk corrosion properties, mpy (mills per year) and electrode appearance, in neutral pH synthetic cooling water under chlorination in beaker corrosion tests and recirculating units. Admiralty brass (ADM) coupons from recirculating experiments with chlorination where evaluated against pre-filmed coupons utilizing X-ray Photoelectron Spectroscopy (XPS) and Time of Flight Secondary Ion Mass Spectroscopy (TOF-SIMS) and correlated to their bulk corrosion properties. The surface analysis of BZT, TTA, and BBZT under simulated cooling conditions provides new insights into the azoles' corrosion inhibition performance, mechanism, and mode of use for yellow metal corrosion control

Subject
Films, Water, Corrosion rate, Metal surfaces, X-ray spectroscopy, Surface analysis, Oxide surfaces, Film formation, Corrosion inhibitors, Corrosion protection, Copper, Corrosion coupons, Cooling water
Keywords:
Benzotriazole, Tolyltriazole, Butyl Benzotriazole, Azole, Corrosion, Copper, Surface Analysis, Electrochemistry, XPS, ToF-SIMS
© 2014 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2014
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.