Über die wirkung von zusätzen beim elektrolytischen polieren von Pb0,8Sn0,2Te in alkalischen Lösungen

✍ Scribed by B. Breitsameter; H. Löwe

• Publisher: Elsevier Science
• Year: 1984
• Tongue: English
• Weight: 427 KB
• Volume: 29
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(84)87123-6

✦ Synopsis

The influence of NO;, CIO, , ethylene glycol, giycerol and sorbital on the hmitmg current density is studied during electrolytic polishing of Pb,,, Sn,,,Te in 0,l M NaOH. Under polishing conditions the rate ofdissolution in these electrolytes is determined by the diffusion of hydroxide ions from the interior of the electrolytic solution towards the partially passivated Pb,.,Sn,,,Te-surface. Therefore, it is assumed that the levelling of surface roughness takes place according to the diffusion mechanism proposed by Edwards [J. electroclzem. Ser. 100,223 (195311. The useful effect ofadmixtures such as CIO, and sorbitol on pohshing consists in the partial or entire depassivation of the surface.