Uticaj uree i glukoze na otpornost legure zlata 21K na koroziju u prisustvu veštačkog znoja

Autori

Babu Mahalakshmi Sri Meenakshi Government Arts College For Women (A), Department of Chemistry, Madurai, India Autor
Venkatachalam Prathipa PSNA College of Engineering and Technology, Department of Chemistry, Dindigul, India Autor
Susai Rajendran St. Antony's College of Arts and Sciences For Women, Corrosion Research Centre, Department of Chemistry, Dindigul, India + Pondicherry University, Centre for Nanoscience and Technology, Puducherry, India Autor
Anitha Nilavan St. Antony's College of Arts and Sciences For Women, Corrosion Research Centre, Department of Chemistry, Dindigul, India Autor

DOI:

https://doi.org/10.5937/zasmat2203341U

Ključne reči:

otpornost na koroziju, termoaktivna legura, legura zlata 21K, veštački znoj, studija polarizacije, spektri impedanse naizmenične struje

Apstrakt

Otpornost na koroziju legure zlata 21K uronjene u veštački znoj u odsustvu i prisustvu 100 ppm uree i 100ppm D-glukoze je ispitana proučavanjem polarizacije i spektara impedanse naizmenične struje. Prime eno je da se povećava otpornost na koroziju legure zlata 21K uronjene u veštački znoj u prisustvu 100 ppm uree/D-glukoze. Otuda se zaključuje da ljudi koji nose ukrase od legure zlata 21K ne moraju da brinu o višku uree -glukoze u svom znoju. Kada se legura zlata 21K potopi u veštački znoj u prisustvu 100 ppm uree vrednost otpora linearne polarizacije se povećava sa 103389 Ohmcm2 na 123437Ohmcm2 ; struja korozije opada sa 4,036 k10-7A/cm2 na 3,308 k10-7A/cm2 vrednost otpora prenosa naelektrisanja se povećava sa 10490 Ohmcm2 na 14070 Ohmcm2 vrednost impedanse se povećava sa 4,253 na 4,324; kapacitivnost dvostrukog sloja se smanjuje sa 4,862k10-10 F/cm2 na 3,625k10-10F/cm2 a fazni ugao se povećava sa 38,91° na 70 14°. Kada se legura zlata 21K potopi u veštački znoj u prisustvu 100ppm -glukoze vrednost otpora linearne polarizacije se povećava sa 103389 Ohmcm2 na 4817257Ohmcm2 ; struja korozije se smanjuje sa 4,036 k10-7A/cm2 na 0,161k10-7A/cm2 ; otpor prenosa naelektrisanja se povećava sa 10490 Ohmcm2 na 33300 Ohmcm2 vrednost impedanse se povećava sa 4,253 na 4,977; kapacitivnost dvoslojnog sloja se smanjuje sa 4,862k10-10 F/cm2 na 1,5315k10-10 F/cm2 a fazni ugao se povećava sa 38 91° na 79 74.

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2022-09-15

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