Mechanical Zinc Coating Procedure under Conditions of Vibration Mechanical-Chemical Impact

Abstract

The purpose of the investigation carried out is the study of regularities in structural-phase changes and mechanical-chemical processes occurred in a surface layer under the influence of outer and inner technological factors. As experimental equipment there was used a vibration horizontal plant of UVG4x10 type. Working environment consisted of porcelain balls of 4mm diameter, PU-20 zinc powder and an aqueous solution of zinc chloride, and as abrasives – steel plates of 10x10 mm. As a result of the investigations there was determined a mechanism of coating formation, technological regulations for its application were established, surface morphology was investigated. The coating obtained exceeds the electrolytic one by a factor of 1.5 on corrosion resistance due to the absence of a hydrogenated layer.

The research of technological characteristic of the vibrowave mechanical and chemical oxide coating formation

“…The adenol alloy shields size 10 by 10, thickness 2 mm were used as the research samples. Before the placing VMCOL, the sample surface were polished to get mirror effect [6,7]. Tridimensional SPM image of the micro print of the initial surface fig.…”

Zinc Coating Obtained in the Result of the Mechanochemical Effects in Vibrodynamic the Setups of Various Types

“…As a result, less porosity, increased corrosion resistance and greater adhesion strength to the base metal are achieved. [5][6][7][8][9].…”

“…Operating modes of the equipment are set within the following limits: amplitude of oscillation 3 mm, oscillation frequency 25 Hz, time 45-60 min. [7,8].…”

The service life increasing of bushings by electro-acoustic spraying

“…The amount of transferred metal mainly depends on the electro-erosive stability of the electrode material and the energy of a single pulse. A number of researchers [7,8,9] expressed their views on the mechanism of electrical erosion of metals. However, a sufficiently reasoned theory for the quantitative calculation of the values of the erosional destruction of electrodes has not yet been created.…”