Preparation and Characterization of the Decarbonization Preventing Nano-Coating Applied in Spring Steel Protection

Abstract:

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Surface decarburization is one of important issues in spring steel production. The novel decarbonization-resistant nano-coating has been successfully fabricated, by using a low-cost, and easily accessible bauxite minerals and other additional components, including magnesia, silicon carbide,glass powder and agglomerant, which is used to prevent spring steels from being decarburized during the hot-rolling process. The microstructure of the protective nano-coating is observed by means of X-ray diffraction, TG-DTA, metalloscope and so on. It is found that even if some glass ceramic exists within the coating in the initial lower temperature (950°C~1000°C) the decarbonization-preventing coating still presents decarburization resistance up to 72.2%. Furthermore, the protective ration reaches to 100% when the heating temperature rises to range (1050°C~1100°C). The excellent decarbonization preventing properties are attributed to the formation of glass ceramic and pleonaste, which hinders the second interdiffusion of oxygen and carbon.

Info:

Periodical:

Edited by:

Rongming Wang, Ying Wu and Xiaofeng Wu

Pages:

238-244

DOI:

10.4028/www.scientific.net/MSF.688.238

Citation:

X. J. Wang et al., "Preparation and Characterization of the Decarbonization Preventing Nano-Coating Applied in Spring Steel Protection", Materials Science Forum, Vol. 688, pp. 238-244, 2011

Online since:

June 2011

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Price:

$35.00

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