Tihonenko V. The improvement of normative and technical providing of quality of coatings on aluminum alloys produced by microarc oxidation

The object of the research - quality control of coatings on aluminum and its alloys, produced by microarc oxidation (MAO). The aim of the research - improving the quality assessment of hardwearing coatings on aluminum alloys produced by microarc oxidation (MAO-coating), based on the use of modern control methods and development of technical and normative providing. Methods: methods of qualimetry, statistical control of product quality, experiment planning; methods of contact potential difference, exoelectron emission, methods for measuring thickness, microhardness and porosity, wear test. Scientific novelty: novel regression models corresponding to dependencies of microhardness and thickness of hardened coating of the microarc oxidation technological parameters are obtained; the quality control method of MAO-coating is improved on the basis of combination of methods for measuring microhardness and thickness, porosity and wear-resistance with methods of exoelectron emission and contact potential difference; the non-destroying exoemission method for determining porosity of the materials is proposed; method of generation obtaing working substances based on MAO-coating for solid-state dosimeters is first proposed and developed. Practical significance: proposals for comprehensive program of standardization coating technology by microarc oxidation method are elaborated; recommendations for writing of standard for microarc oxidation technology of aluminum alloys is conceived and project of current organization standard, test method of MAO-coating are suggested; proposals for improving normative providing of exoemission methods are suggested. Implementation: research results have been taken to implement in the Institute of solid-state physics, materials science and technologies NSC "Kharkov Institute of Physics and Technology" and in the "Ukrspetsmash", have been implemented to the teaching process in UIPA.