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Characteristics of ice and frost formation on superhydrophobic surfaces on aluminum substrates.

[In Chinese. / En chinois.]

Author(s) : XU W., SONG J., SUN J., et al.

Type of article: Article

Summary

The superhydrophohic surface on aluminum substrate with water contact angle of 160° and contact angle hysteresis lower than 5° was fabricated by electrochemical machining with the neutral electrolyte and fluorination, then ice and frost foonation on it was studied. The surface topography and frost thickness under different experimental conditions were investigated and compared with the superhydrophobic surface. ordinary aluminum surface and hydrophilic surface. respectively. The experimental results show that the surface still has good hydrophobic properties in reproducibility and durabi lity after 50 times frost and defrosting. Moreover, the superhydrophobic surface demonstrates the anti-icing and frosting capability eminently compared with ordinary aluminum surface, frost crystals appear arounding the edge of the supcrhydrophobic surface firstly, then spread gradually to the entire surface, but the anti-icing and frosting capability will reduce with the decrease of temperature of cold surfaces. Furthennore, the supcrhydrophbic surface can prevent the increasement of ice mass effective ly compared with hydrophilic surface.

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Pages: 9-13

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Details

  • Original title: [In Chinese. / En chinois.]
  • Record ID : 30003105
  • Languages: Chinese
  • Source: Journal of Refrigeration - n. 140
  • Publication date: 2011/08

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