Electrical double layer and adhesive force in fatigue strength of metals coated with plastics

Purpose: Literature consists a lot of information concerning the issues of the fatigue endurance of metals coated with plastics. However few studies explicitly explain, what mechanisms decide on the increased fatigue endurance of metals coated with plastics. Therefore an expression is a purpose of the work on what a way increasing this fatigue endurance permanence is taking a place. Design/methodology/approach: In hereby article they discussed issues concerning the fatigue endurance of metals coated with plastic. Authors are putting the thesis on the basis of an analysis of literature and own examinations, that metals coated with material are characterized by an increased fatigue endurance. Findings: On the basis of results conclusions concerning raising the fatigue endurance permanence of some coated metals were deduced from an experiment with material. Research limitations/implications: Examinations were concentrated only on determining the influence of the electrode potential and power of adhesion on metal samples (steel 20 and 45) covered with different coatings. To the purpose of demonstrating the increased fatigue endurance permanence of analyzed samples they limited themselves to experiments taking into consideration the strength to turning and bending. Practical implications: Get results of research are broadening their knowledge of the scope of changes of the fatigue strength of metals coated with plastic. Originality/value: Authors are making a demand that the considerable increase of the fatigue endurance permanence of tested samples is caused with influence of electric double layer by adhesive force of the coating to metal.