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A laser-based technique for the coating of mild steel with a\ud vitreous enamel

By Jonathan Lawrence and Lin Li


Marked changes in the wettability characteristics of EN8 mild steel were observed after high power\ud diode laser (HPDL) surface treatment of the metal. The morphological, microstructural and wetting\ud characteristics of the steel were determined using optical microscopy, scanning electron microscopy\ud (SEM), X-ray photoemission spectroscopy (XPS) and wetting experiments by the sessile drop\ud technique. Improvements in the wetting action of the mild steel after HPDL surface treatment were\ud identified as being the result of: The HPDL induced melting of the mild steel surface which brought\ud about a reduction of the surface roughness; The small increase in the polar component of the surface\ud energy and the increase in the surface O2 content of the mild steel resulting from HPDL treatment.\ud This work has demonstrated that the use of HPDL radiation to alter the wetting characteristics of mild\ud steel in order to facilitate improved enamelling is a real possibility

Topics: H680 Optoelectronic Engineering, H700 Production and Manufacturing Engineering
Publisher: Elsevier
Year: 2001
DOI identifier: 10.1016/S0257-8972(01)01039-9
OAI identifier: oai:eprints.lincoln.ac.uk:3189

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