Identification of the principal elements governing the wettability characteristics of ordinary Portland cement following high power diode laser surface treatment

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Abstract

The elements governing modifications to the wettability characteristics of ordinary Portland cement (OPC) following high power diode laser (HPDL) surface treatment have been identified. Changes in the contact angle, θ, and hence the wettability characteristics of the OPC after HPDL treatment were attributed to: reductions in the surface roughness of the OPC; the increase in the surface O2 content of the ceramic and the increase in the polar component of the surface energy, γpsv. What is more, the degree of influence exerted by each element has been qualitatively ascertained and was found to differ markedly. Surface energy, by way of microstructural changes, was found to be by far the most predominant element governing the wetting characteristics of the OPC. To a much lesser extent, surface O2 content, by way of process gas, was also seen to influence to a changes in the wettability characteristics of the OPC, whilst surface roughness was found to play a minor role in inducing changes in the wettability characteristics.

Original languageEnglish
Pages (from-to)162-172
Number of pages11
JournalMaterials Science and Engineering A
Volume356
Issue number1-2
Early online date25 Apr 2003
DOIs
Publication statusPublished - 15 Sep 2003
Externally publishedYes

Keywords

  • Contact angle
  • Glazing
  • High power diode laser (HPDL)
  • Ordinary Portland cement (OPC)
  • Surface energy
  • Wettability

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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