Effect of UV irradiation and diffuse plasma on surface properties of micro-arc calcium phosphate coatings

V. V. Chebodeva, E. G. Komarova, M. V. Erofeev, V. S. Ripenko, Yu P. Sharkeev

Research output: Contribution to journalConference article

Abstract

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.

Original languageEnglish
Article number012077
JournalJournal of Physics: Conference Series
Volume1393
Issue number1
DOIs
Publication statusPublished - 28 Nov 2019
Event14th International Conference on Gas Discharge Plasmas and Their Applications, GDP 2019 - Tomsk, Russian Federation
Duration: 15 Sep 201921 Sep 2019

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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