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Corrosion behaviour of surface treated materials

Chunatu, Shinoi (2016). Corrosion behaviour of surface treated materials. Bachelor of Engineering Co-op (4th Year Project) Thesis, Charles Darwin University.

Document type: Thesis
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Author Chunatu, Shinoi
Title Corrosion behaviour of surface treated materials
Institution Charles Darwin University
Publication Date 2016-05
Thesis Type Bachelor of Engineering Co-op (4th Year Project)
Supervisor Kannoorpatti, Krishnan
Thennadil, Suresh
0913 - Mechanical Engineering
Abstract Surface-hardened steels are highly sought after for applications in the mining, mineral processing and metallurgical industries because of its wear resistant properties. Hardfacing and ion implantation are two surface-hardening techniques which would be investigated in this thesis. Hardfacing involves welding a suitable alloy that produces a hard surface on the substrate. Ion implantation involves the use of particle accelerators which discharge ions of harder materials into the steel substrate to alter its tribological properties.

Electrochemical analysis is used to study the corrosion behaviour of ion implanted and hardfaced samples because several environmental conditions can be examined over short time periods. Anodic polarisation tests are a type of electrochemical study which can aid in identifying passive regions of corrosion in the surface treated steel. Part A of this thesis involved literature review and preliminary anodic polarisation tests of chromium white iron hardfaced steel samples to determine its corrosion behaviour. Part B of this thesis involves anodic polarisation tests of ion implanted samples in acidic, basic and neutral environments.
Keyword ion implantation
hardfacing alloys
corrosion resistance
chromium carbides
amorphous surface alloys
anodic polarisation
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Created: Mon, 25 Jul 2016, 08:49:21 CST by Jessie Ng