Lawrence, Jonathan and Li, Lin (2001) The influence of a high power diode laser (HPDL) generated glaze on the wetting characteristics and the subsequent HPDL enamelling of ordinary Portland cement. Surface and Coatings Technology, 137 (1). pp. 77-85. ISSN 0257-8972
Full content URL: http://dx.doi.org/10.1016/S0257-8972(00)00742-8
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| Item Type: | Article |
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| Item Status: | Live Archive |
Abstract
High power diode laser (HPDL) surface glazing of the ordinary Portland cement (OPC) surface of concrete was found to effect significant changes in the wettability characteristics of the OPC. This behaviour was identified as being primarily due to: (i) the polar component of the OPC surface energy increasing after HPDL glazing from 3.46 to 15.56 mJm-2, (ii) the surface roughness of the OPC decreasing from an Ra value of 21.91 to 2.88 m after HPDL glazing and (iii) the relative surface O2 content of the OPC increasing by 4.5at% after HPDL glazing. HPDL glazing was consequently identified as occasioning a decrease in the enamel contact angle from an initial value of 1090 to 310, thus allowing the vitreous enamel to wet the OPC surface.
| Additional Information: | High power diode laser (HPDL) surface glazing of the ordinary Portland cement (OPC) surface of concrete was found to effect significant changes in the wettability characteristics of the OPC. This behaviour was identified as being primarily due to: (i) the polar component of the OPC surface energy increasing after HPDL glazing from 3.46 to 15.56 mJm-2, (ii) the surface roughness of the OPC decreasing from an Ra value of 21.91 to 2.88 m after HPDL glazing and (iii) the relative surface O2 content of the OPC increasing by 4.5at% after HPDL glazing. HPDL glazing was consequently identified as occasioning a decrease in the enamel contact angle from an initial value of 1090 to 310, thus allowing the vitreous enamel to wet the OPC surface. |
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| Keywords: | high power diode laser (HPDL), ordinary Portland cement (OPC), enamel, glazing, wettability, surface energy |
| Subjects: | H Engineering > H680 Optoelectronic Engineering H Engineering > H700 Production and Manufacturing Engineering |
| Divisions: | College of Science > School of Engineering |
| ID Code: | 3246 |
| Deposited On: | 27 Aug 2010 09:54 |
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