English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Lubricating oil additives are expected to perform in the presence of polar organic compounds in functioning lubrication system. The present study deals with the influence of polar solvent on the adsorption phenomena of DNNS and other additives on metal surfaces using ellipsometry. The results show that BaDNNS film adsorbed on gold surface from n-hexane solution is not easily desorbed with n-hexane, whereas the film is desorbed with acetone. The same result was obtained with CaDNNS; succinimide dispersant is not easily desorbed by acetone rinse. The same tendency was obtained with chromium, and iron alloy. On the other hand, when Ba-DNNS is adsorbed from acetone solution on gold surface, the adsorbed film consists of two layers, that is, one is easily desorbed with acetone and the other is not. The contact angle measurement suggests that the adsorbed film of BaDNNS from n-hexane solution is different from that for acetone in orientation. The adsorption behavior of BaDNNS on gold from mixed n-hexane/1-propanol solution is different from that on carbon black.

Adsorption of lubricating oil additives on solid surfaces. (Part 3). Influence of polar compounds on the adsorption and desorption of additives.