کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
615480 881447 2011 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tribological behavior and nature of tribofilms generated from fluorinated ZDDP in comparison to ZDDP under extreme pressure conditions—Part 1: Structure and chemistry of tribofilms
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Tribological behavior and nature of tribofilms generated from fluorinated ZDDP in comparison to ZDDP under extreme pressure conditions—Part 1: Structure and chemistry of tribofilms
چکیده انگلیسی

Tribofilms generated under boundary conditions at extreme pressure using lubricants containing fluorinated zinc dialkyl dithiophosphate (F-ZDDP) and zinc dialkyl dithiophosphates (ZDDP) were examined. F-ZDDP demonstrated superior wear performance compared to ZDDP even at lower phosphorus levels. The tribofilms generated by ZDDP and fluorinated ZDDP were analyzed using scanning electron microscopy, Auger electron spectroscopy and XPS. Transmission electron microscopy was conducted on wear debris. XANES spectroscopy was used to study the chemical and bonding environment of sulfur and phosphorus in these tribofilms. A phenomenological model of the tribofilms generated by ZDDP and fluorinated ZDDP was developed based on the experimental results.

Figure optionsDownload high-quality image (115 K)Download as PowerPoint slideResearch Highlights
► This study is the first of its kind to examine the role of fluorinated ZDDP as an anti-wear agent in comparison to ZDDP.
► Phenomenological models explaining the formation, chemistry and structure of in-situ formed tribofilms at extreme pressure has been developed.
► XANES using multiple beamlines including P L and K edge, S L and K edge, Fe L edge, O K edge and Zn L edge have been used to develop a deeper understanding of the local coordination of these elements in the tribofilm.
► Transmission electron microscopy has shown that wear debris is essentially amorphous but contains nanocrystalline particles of Fe3O4 and the density of these particles is related to wear performance and tribofilm integrity.
► F-ZDDP has been shown to result in lower wear in comparison to ZDDP under identical tribological conditions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tribology International - Volume 44, Issue 3, March 2011, Pages 187–200
نویسندگان
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