Investigations of Local Corrosion Behavior of Plasma-Sprayed FeCr Nanocomposite Coating by SECM.
- Resource Type
- Article
- Authors
- Shi, Xi; Shu, Mingyong; Zhong, Qingdong; Zhang, Junliang; Zhou, Qiongyu; Bui, Quoc
- Source
- Journal of Thermal Spray Technology. Feb2016, Vol. 25 Issue 3, p595-604. 10p.
- Subject
- *CORROSION & anti-corrosives
*HEAT treatment
*NANOCOMPOSITE materials
*PLASMA spraying
*PROTECTIVE coatings
- Language
- ISSN
- 1059-9630
FeCr alloy coating can be sprayed on low-carbon steel to improve the corrosion resistance because of FeCr alloy's high anti-corrosion capacity. In this paper, Fe microparticles/Cr nanoparticles coating (NFC) and FeCr microparticles coating (MFC) were prepared by atmospheric plasma spraying and NFC was heat-treated under hydrogen atmosphere at 800 °C (HNFC). EDS mapping showed no penetration of Ni in MFC and NFC while penetration of Ni occurred in HNFC. X-ray diffraction results indicated the form of the NiCrFe (bcc) solid solution in HNFC. SECM testing in 3.5 (wt.%) NaCl revealed that the anti-corrosion capacity of NFC improved compared with MFC, while HNFC improved further. [ABSTRACT FROM AUTHOR]