Corrosion in automotive exhaust components is one of the major problems due to which failures occur even after a very short period of time. Corrosion in such systems can be divided into two types: (a) cold end corrosion and (b) hot end corrosion. These different ends of the exhaust system corrode by different mechanisms. For cold end, the key concern has been corrosion due to interactions of salt solution from outside and acidic condensate from inside. Presently, the most commonly used materials in the automotive exhaust system are stainless steels. These steels contain high amounts of chromium, nickel, manganese, molybdenum, titanium and nitrogen. Due to increasing cost of nickel and some other alloying elements, there is a big intention to replace stainless steels by other substitutes. The aim behind this study is to find low cost alternatives having enough corrosion resistance to achieve a reasonable life time. This work focuses on evaluation of corrosion resistance of Zn-AI-Mg coatings (ZM), hot dip aluminized coatings (HDA), electrolytic nickel coatings (EN) on medium carbon steel. Numerous corrosion simulation tests have been performed to develop a complete ranking of these coatings. The detailed surface characterization including morphology, phase composition, corrosion products was studied. In the end, a detailed mechanism of corrosion is discussed for each case.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Corrosion studies of different metal coatings for automotive exhaust applications


    Contributors:


    Publication date :

    2011


    Size :

    15 Seiten, 19 Bilder, 7 Tabellen, 10 Quellen



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Hot corrosion studies of automotive exhaust valves

    Pnina,A. / Noble,V. / Narasimhan,S. et al. | Automotive engineering | 1991


    Hot Corrosion Studies of Automotive Exhaust Valves

    Larson, Jay M. / Ari-Gur, Pnina / Narasimhan, Simon et al. | SAE Technical Papers | 1991


    COSMETIC CORROSION IN AUTOMOTIVE EXHAUST SYSTEMS INFLUENCE OF TEMPERATURE, MATERIALS AND COATINGS

    Wieser, Helmut / Yasir, Muhammad / Steigerwald, Marc et al. | British Library Conference Proceedings | 2016


    4150 Internal Corrosion of Automotive Exhaust Systems

    Hashimoto, Reina / Mori, Gregor / Wieser, Helmut et al. | TIBKAT | 2014


    Corrosion of Materials for Automotive Exhaust Systems

    Gaugh, R.R. | SAE Technical Papers | 1991