Otpornost na koroziju ortodontske žice od legure nikl-titanijuma u veštačkoj pljuvački u prisustvu Kopiko bombona
DOI:
https://doi.org/10.5937/zasmat2204430AKljučne reči:
otpornost na koroziju, legura Ni-Ti, veštačka pljuvačka, Kopiko bombon, studija polarizacije, spektri AC impedanse, dečija stomatologijaApstrakt
Otpornost na koroziju ortodontske žice, napravljene od legure Ni-Ti, uronjene u veštačku pljuvačku u odsustvu i prisustvu 500 ppm Kopiko bombona je ispitana polarizacionom studijom i spektrom impedanse naizmenične struje. Primećeno je da se otpornost na koroziju Ni-Ti legure potopljene u veštačku pljuvačku u prisustvu 500 ppm Kopiko bombona povećava. Otuda se zaključuje, da ljudi koji su sadrze ortodontsku žicu u ustima od Ni-Ti legure ne moraju da brinu o uzimanju Kopiko bombona oralno. Kada se legura Ni-Ti potopi u veštačku pljuvačku u prisustvu 500 ppm Kopiko bombona, vrednost otpora linearne polarizacije se povećava sa 347978 Ohmcm2 na 415003 Ohmcm2 ; struja korozije se smanjuje sa 1,346 k10-7 A/cm2 na 1,105 k10-7 A/cm2 ; vrednost otpora prenosa naelektrisanja se povećava sa 31945 Ohmcm2 na 44357 Ohmcm2; vrednost impedanse se povećava sa 4,649 na 4,819; kapacitivnost dvostrukog sloja se smanjuje sa 1,596k10-10 F/cm2 na 1,150k10-10 F/cm2 , a fazni ugao se povećava sa 39,63° na 50°.Reference
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