A Comparative Study on the Effects of Different Thermochemical Coating Techniques on Corrosion Resistance of STKM-13A St
- PDF / 5,451,352 Bytes
- 15 Pages / 593.972 x 792 pts Page_size
- 40 Downloads / 164 Views
TION
MOST metallic elements which make up pure metals and alloys are inherently unstable, and they will tend to react with the environment to form their more stable compounds. This process is known as corrosion, which is defined as chemical/electrochemical alteration due to various environmental effects or damage owing to physical dissolution.[1,2] Corrosion can never be completely stopped; instead its progression can be
ALI_ GU¨NEN and AHMET C¸U¨RU¨K are with the Department of Metallurgy and Materials Engineering, Faculty of Engineering, Iskenderun Technical University, 31200 Hatay, Turkey. Contact emails: [email protected]; [email protected] YUSUF KANCA is with the Department of Mechanical Engineering, Faculty of Engineering, Hitit University, 19030 C¸orum, Turkey. _ _ HAKKI KARAHAN is with the Department of Physics, ISMA IL Faculty of Science and Arts, Mustafa Kemal University, 3100 Hatay, Turkey. MUSTAFA SERDAR KARAKAS ¸ is with the Department of Metallurgical and Materials Engineering, Faculty of Engineering, Selc¸uk University, 42130 Konya, Turkey. MUSTAFA SABRI_ GO¨K is with the Department of Mechanical Engineering, Faculty of Engineering, Bartın University 74000 Bartın, Turkey. ERDOG˘AN KANCA is with the Department of Mechanical Engineering, Faculty of Engineering, Iskenderun Technical University, 31200 Hatay, Turkey. Manuscript submitted April 27, 2018.
METALLURGICAL AND MATERIALS TRANSACTIONS A
slowed down using various corrosion protection strategies.[2–4] Indeed, the study of corrosion protection has seen a large expansion in recent years due to the increased recognition of the economic losses caused either directly or indirectly by corrosion.[1] Corrosion processes typically initiate at the surface. It is the surface of a metal which is in contact with the environment, where chemical species are able to react with the metal, and may disturb/destroy the protective chemical films.[1–3] Strategies aimed in improving the wear and corrosion resistances of the surface of a material are often more cost effective than those that improve the corrosion resistance of the bulk.[5,6] A large variety of surface-modification techniques are applied to protect metal/alloy surfaces from external influences, and to minimize the effects of wear and corrosion.[5–8] One of the easiest and most economic ways to improve corrosion resistance is through surface modification.[5] Thermoreactive diffusion (TRD) processes go one step forward, as they provide equivalent coatings with lower installation costs in comparison with other surface-hardening processes such as physical vapor deposition, chemical vapor deposition, and thermal spray methods.[9–11] TRD processes form nitride, carbide or boride layers on the material surface to make the surface harder, more durable, and more resistant to corrosion.[9] Since these
processes don’t cause any alteration in hardness of the core, they also provide toughness by absorbing energy which occurs in materials exposed to static and dynamic loads.[5,6] TRD processes can include carburizing
Data Loading...
