CHEMICAL CHARACTERIZATION OF ANTIWEAR FILMS GENERATED ON STEEL BY ZINC DIALKYL DITHIOPHOSPHATE USING X-RAY-ABSORPTION SPECTROSCOPY

被引：89

作者：

YIN, ZF ^{[1
]}

KASRAI, M ^{[1
]}

BANCROFT, GM ^{[1
]}

LAYCOCK, KF ^{[1
]}

TAN, KH ^{[1
]}

机构：

[1] SARNIA RES CTR,DIV IMPERIAL OIL PROD,SARNIA N7T 7M1,ON,CANADA

来源：

TRIBOLOGY INTERNATIONAL | 1993年 / 26卷 / 06期

关键词：

ANTIWEAR FILMS; PHOSPHORUS; SULFUR; L-EDGE; X-RAY ABSORPTION; XANES; ZINC DIALKYL DITHIOPHOSPHATE;

D O I：

10.1016/0301-679X(93)90076-D

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The addition of antiwear and extreme-pressure agents to lubricants produces protective films on the sliding surfaces. Two of the most common elements in antiwear/extreme-pressure additives are sulphur and phosphorus. These are commonly added in the form of Zinc dialkyl dithiophosphate (ZDDP). P and S L-edge X-ray absorption near-edge (XANES) spectra of the films and several model compounds containing both S and P have been recorded at high resolution, utilizing synchrotron radiation. Using the spectra of the model compounds as fingerprints, it has been possible to speciate the nature of the antiwear/extreme-pressure films. It has been found that the chemical state of phosphorus in the films corresponds closely to that of polyphosphates and depends on the alkyl group used in ZDDP. Sulphur is present mostly in the form of sulphide.

引用

页码：383 / 388

页数：6

共 23 条

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