Abstract
Our work is about plasmachemical reduction of model corrosion layers. The model corrosion layers were produced on bronze samples with size of 10 × 10 × 5 mm3, containing Cu and Sn. Concentrated hydrochloric acid was used as a corrosive environment. The application of reduction process in low-pressure low-temperature hydrogen plasma followed. A quartz cylindrical reactor with two outer copper electrodes was used. Plasma discharge was generated in pure hydrogen by a RF generator. Each corroded sample was treated in different conditions (supplied power and a continual or pulsed regime with a variable duty cycle mode). Process monitoring was ensured by optical emission spectroscopy. After treatment, samples were analyzed by SEM and EDX.
Highlights
Beginning of plasma treatment of various subjects is dated on eighties of the twentieth century when group around Daniels used low-pressure hydrogen plasma for the promising treatment of Daguerreotypes and tarnished silver objects [1]
Time dependence of OH radical emission Atomic hydrogen is one of the products created by plasma
If atomic hydrogen reacts with oxygen in the corrosion layer, OH radicals are produced. This running process was monitored by the optical emission spectroscopy
Summary
Beginning of plasma treatment of various subjects is dated on eighties of the twentieth century when group around Daniels used low-pressure hydrogen plasma for the promising treatment of Daguerreotypes and tarnished silver objects [1]. The first success for iron artifacts was achieved by prof. Our experimental equipment was constructed according to the design of prof. Vep ek [2], and was further improved
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
