Effect of Particle Size Distribution on Microstructure and Wettability of 316L Coating

Abstract:

In this paper, a superhydrophobic surface was first obtained on plasma sprayed 316L coatings. The influence of particle size distribution of feedstock powder on the microstructure of the prepared coating was investigated. The results show that a wide particle size distribution may lead to a porous coating with a micro/submicro dual scale morphology. The wettability of the porous coating can change from superhydrophilicity to superhydrophobicity through modulating the surface energy. In addition, mechanical durability tests show that the morphology of the prepared coating varies periodically with abrasion time. The successive exposing of fresh layers with similar morphology during abrasion process was proposed to explain this phenomenon.

• Periodical: Applied Mechanics and Materials (Volume 197)
• Pages: 787-791
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.197.787
• Online since: September 2012
• Authors: Zheng Feng Li, Yan Jun Zheng, Li Shan Cui
• Keywords: Dual Scale Morphology, Mechanical Durability, Plasma Spray, Superhydrophobicity

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