Microstructural Features of Plasma Nitrided Molybdenum Alloy Steel

Franklin, M.J.; Huang, S.W.; Chandra, T.

doi:10.4028/0-87849-428-6.1282

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thermal spraying coatings are abrasion-resistant with low friction (Bartuli et al 2007;Ciulli 2009;Steffens et al 1995), among which ceramic-based abrasive coatings (including alumina, titania, zirconia, chromia, yttria and the mixtures (Rainforth 2004)) are the most applied, as so called "tribo-coatings". Plasma nitriding surface treatment was also suggested for mechanical components of rail industry aiming at enhancing abrasion and corrosion resistance, and also surface hardness (Franklin et al 2006;Lailatul and Maleque 2017). However, the most intensively studied coating technology for rail materials is laser cladding, which induces little deformation and small heat-affected zone for rail materials, and also allows efficient formation of metallurgical bonding with the substrate (Meng et al 2019).…”

Section: Surface Modification Technologiesmentioning

confidence: 99%

Corrosion of rail tracks and their protection

Zhang

Deng

et al. 2020

Corrosion Reviews

View full text Add to dashboard Cite

Rapid development of railway industry makes safety increasingly important. Wear, contact-impact, fatigue and corrosion are important factors initiating rail track degradation from the beginning, while corrosion attracts far less attention than other issues. Direct corrosion cost due to railway corrosion in China was 18.88 billion RMB, so corrosion definitely deserves more attention. This work has reviewed studies focussing exclusively on rail corrosion, including corrosion forms, protection and detection technologies. General corrosion on large rail surface is not limiting, while crevice corrosion between rail and liner, resulting in thinning of rail foot, is regarded significant but overlooked. Moreover, reciprocating micro-motion between rail foot and liner mechanically assists the ongoing of crevice corrosion. However, it was mentioned in very few reports and not investigated extensively. Coating and surface modification may be applied for mitigation of rail track corrosion. The weakness of coating is poor mechanical properties, while surface modification, including thermal spraying and laser cladding, may be a better way. Development of novel steel is another effective method, but loss of mechanical properties becomes obstacles for practical applications. Ultrasonic and infrared have been applied for detection, while more advanced technologies are promising. Suggestions are made on specific research topics in this field.

show abstract