Synergistic Tribological Performances of Borate Additive in Lubricants / Jian-Qiang Hu, Yi-Qin Hu, Guang-Long Liu, Yu-Hong Ma.
- Conference Author
- Automotive Lubricant Testing and Advanced Additive Development (2006 : Lake Buena Vista, Florida)
- Physical Description
- 1 online resource (9 pages) : illustrations, figures, tables
- Additional Creators
- Ma, Yu-Hong, Hu, Jian-Qiang, Hu, Yi-Qin, Liu, Guang-Long, American Society for Testing and Materials, and ASTM International
Access Online
- Restrictions on Access
- Subscription required for access to full text.
License restrictions may limit access. - Summary
- A four-ball tester was used to evaluate the tribological behaviors of nitrogen-containing borate (BNO) combined with zinc dialkyldithiophosphate (ZDDP) and tin dialkyldithiocarbamates (SnDDC) in liquid paraffin or mineral oil, even respectively. The surface analytical tools such as X-ray photoelectron spectrometer (XPS), X-ray diffractometer (XRD), and energy dispersive X-ray (EDX) were used to investigate the chemical states of some typical elements and composition on the rubbing surface of the wear scar. The tribological results show that BNO exhibits better antiwear properties in base oils, and can exhibit good antiwear synergism when it was combined with additives ZDDP and SnDDC, respectively, while the anti-wear properties of oil-containing additive packages are optimal under certain concentration ranges. The results of XPS and XRD analyses indicated that BNO can form tribochemical mixed protective films consisting of BN or B2O3 compounds on the rubbing surface, and the combination of BNO with SnDDC may form tin, oxides, sulfide, and N-containing compounds on the rubbing surfaces, which contribute to improving the tribological properties of lubricants. A considerable amount of ZDDP can be partially replaced by BNO in synergistic mixtures, or replaced completely by the combination of BNO with SnDDC, which is especially important for ZDDP used in ecologically sensitive applications.
- Dates of Publication and/or Sequential Designation
- Volume 2008, Issue 1501 (January 2008)
- Subject(s)
- Other Subject(s)
- ISBN
- 9780803162525 (e-ISBN)
9780803145054
0803145055 - Digital File Characteristics
- text file PDF
- Bibliography Note
- Includes bibliographical references 18.
- Other Forms
- Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription.
Full text article also available for purchase.
Also available in PDF edition. - Reproduction Note
- Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 2008. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
- Technical Details
- Mode of access: World Wide Web.
- Source of Acquisition
- ASTM International PDF Purchase price USD25.
View MARC record | catkey: 28009152