Research on the plasma spray process applying the finite element method/Plazminio purskimo procesu tyrimas baigtiniu elementu metodu

The article investigates the physical processes of plasma spraying. The application of the finite element method has assisted in establishing the distribution of the voltage of the plasma arc and current density in the plasma stream during numerical simulation. With reference to the results of experimental data, the real location of an anode spot of the electric arc in the plasma spray process has been evaluated. The paper has calculated the values of electromagnetic Lorentz forces and established their influence on plasma flow. With the help of the two-layer model for the semi-molten nickel particle, contact between the particle and substrate during plasma spraying has been simulated. Keywords: plasma spraying, physical processes, finite element method, particle contact. Straipsnyje nagrinejami fizikiniai procesai, vykstantys plazminio purskimo metu. Taikant baigtiniu elementu metoda, skaitinio modeliavimo metu buvo nustatytas plazmos lanko itampos ir sroves tankio pasiskirstymas plazmos sraute. Panaudojant eksperimentiniu rezultatu duomenis, buvo ivertinta reali elektros lanko anodo demes padetis plazminio purskimo procese. Buvo apskaiciuotos elektromagnetiniu Lorenco jegu reiksmes ir nustatyta ju itaka plazmos srautui. Taikant dvisluoksnes aplydytos nikelio daleles modeli, buvo imituojamas daleles kontaktas su substratu purskiant. Reiksminiai Zodziai: plazminis purskimas, fizikiniai procesai, baigtiniu elementu metodas, daleles kontaktas.