Tribological properties and lubricating mechanisms of the rare earth complex as a grease additive

Zefu Zhang; Weimin Liu; Qunji Xue

doi:10.1016/0043-1648(95)06772-8

Tribological properties and lubricating mechanisms of the rare earth complex as a grease additive

Zefu Zhang, Weimin Liu, Qunji Xue

CAS - Lanzhou Institute of Chemical Physics

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

One N-salicylidene derivative of malonic dihydrazide (Schiff base) and its complexes of lanthanum and copper were synthesized. Their tribological properties as additives in lithium grease were evaluated using a four-ball machine. The results indicate that these compounds possess good load-carrying capacity, friction reduction, and anti-wear properties. In particular, the complex of lanthanum has excellent load-carrying capacity, similar to those of zinc dialkyldithiophosphate and molybdenum dialkyldithiocarbamate, and exhibits good anti-wear property. The thermal stability of these compounds were investigated with a thermal gravity analyzer. The lubricating mechanism of these compounds as additives in lithium grease was investigated with analytical tools such as an electron probe micro-analyzer and an Auger electron spectroscope.

Original language	English
Pages (from-to)	80-85
Number of pages	6
Journal	Wear
Volume	194
Issue number	1-2
DOIs	https://doi.org/10.1016/0043-1648(95)06772-8
State	Published - Jun 1996
Externally published	Yes

Keywords

AES
EPMA
Extreme pressure and antiwear
Grease additive
Rare earth complex
Schiff base

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10.1016/0043-1648(95)06772-8

Cite this

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title = "Tribological properties and lubricating mechanisms of the rare earth complex as a grease additive",

abstract = "One N-salicylidene derivative of malonic dihydrazide (Schiff base) and its complexes of lanthanum and copper were synthesized. Their tribological properties as additives in lithium grease were evaluated using a four-ball machine. The results indicate that these compounds possess good load-carrying capacity, friction reduction, and anti-wear properties. In particular, the complex of lanthanum has excellent load-carrying capacity, similar to those of zinc dialkyldithiophosphate and molybdenum dialkyldithiocarbamate, and exhibits good anti-wear property. The thermal stability of these compounds were investigated with a thermal gravity analyzer. The lubricating mechanism of these compounds as additives in lithium grease was investigated with analytical tools such as an electron probe micro-analyzer and an Auger electron spectroscope.",

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AU - Zhang, Zefu

AU - Liu, Weimin

AU - Xue, Qunji

PY - 1996/6

Y1 - 1996/6

N2 - One N-salicylidene derivative of malonic dihydrazide (Schiff base) and its complexes of lanthanum and copper were synthesized. Their tribological properties as additives in lithium grease were evaluated using a four-ball machine. The results indicate that these compounds possess good load-carrying capacity, friction reduction, and anti-wear properties. In particular, the complex of lanthanum has excellent load-carrying capacity, similar to those of zinc dialkyldithiophosphate and molybdenum dialkyldithiocarbamate, and exhibits good anti-wear property. The thermal stability of these compounds were investigated with a thermal gravity analyzer. The lubricating mechanism of these compounds as additives in lithium grease was investigated with analytical tools such as an electron probe micro-analyzer and an Auger electron spectroscope.

AB - One N-salicylidene derivative of malonic dihydrazide (Schiff base) and its complexes of lanthanum and copper were synthesized. Their tribological properties as additives in lithium grease were evaluated using a four-ball machine. The results indicate that these compounds possess good load-carrying capacity, friction reduction, and anti-wear properties. In particular, the complex of lanthanum has excellent load-carrying capacity, similar to those of zinc dialkyldithiophosphate and molybdenum dialkyldithiocarbamate, and exhibits good anti-wear property. The thermal stability of these compounds were investigated with a thermal gravity analyzer. The lubricating mechanism of these compounds as additives in lithium grease was investigated with analytical tools such as an electron probe micro-analyzer and an Auger electron spectroscope.

KW - AES

KW - EPMA

KW - Extreme pressure and antiwear

KW - Grease additive

KW - Rare earth complex

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Tribological properties and lubricating mechanisms of the rare earth complex as a grease additive

Abstract

Keywords

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