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C. HOFFMANN1,* , P. GÜMPEL1
The special corrosion conditions in the rear section of automotive exhaust systems cause high demands on stainless steels used for these components: ferritic steels with different contents of chromium and molybdenum as well as austenitic steel types. For selecting an appropriate material enabling cost-effective design, the corrosion resistance of different materials has to be rated. The corrosion resistance of different stainless steel grades for automotive exhaust systems has been assayed in a laboratory test on the basis of the standard VDA 230-214-test. Concurrent to the laboratory tests the influence of the active carbon, simulating the soot particles, has been investigated in electrochemically measurements. A new preparation method of the samples has been developed, which eliminates the edge effects and also enables the placement of active carbon on the metallic surface of the samples. The results of the tests show that active carbon has a significant influence on the corrosion attack. This circumstance should be considered in the future test methods for stainless steels used in automotive exhaust systems.
Metallic alloys, Automotive applications, Corrosion loading simulation.
C. HOFFMANN, P. GÜMPEL, Experimental researches concerning the corrosion resistance of stainless steels for automotive exhaust systems, Optoelectronics and Advanced Materials - Rapid Communications, 4, 11, November 2010, pp.1886-1890 (2010).
Submitted at: Sept. 23, 2010
Accepted at: Nov. 10, 2010
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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