The influence of UV irradiation or plasma of runaway electron preionized diffuse discharge (REP DD) post-modification on the surface properties of the calcium phosphate (CaP) coatings formed by the micro-arc oxidation (MAO) method was investigated. The formed MAO-coatings had porous structure and rough surface morphology with incorporation of spheroidal structural elements with inner pores. It was showed that the UV irradiation or REP DD post-treatment of the MAO-coatings led to the decrease of the coating contact angels with water from 20 to 0 or to 7 degrees, respectively. However, the free surface energy of the coatings did not change after post-treatments and equalled to 74?1 mJ•m-2. The polar component of the free surface energy of the all types of the coatings exceeded almost 5-6 times the dispersion component that indicated the presence of strong polar bonds on the coating surface, e. g. OH- and PO4-groups.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 28 Nov 2019|
|Event||14th International Conference on Gas Discharge Plasmas and Their Applications, GDP 2019 - Tomsk, Russian Federation|
Duration: 15 Sep 2019 → 21 Sep 2019
ASJC Scopus subject areas
- Physics and Astronomy(all)