An opportunity for partial replacement of phosphates and dithiophosphates in EP packages with boron-containing additives

An opportunity for partial replacement of phosphates and dithiophosphates in EP packages with boron-containing additives

The influence of a boric additive on standard four-ball machine lubricating parameters of tricresylphosphate, zinc-dithiophosphate and sulphurized esters of fatty acids is studied. The consumption of active elements from the bulk oil of some of the samples is estimated by atomic emission spectrometr...

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Veröffentlicht in:Tribology international 1998-05, Vol.31 (5), p.257-263
Hauptverfasser: Stanulov, K.G, Harhara, H.N, Cholakov, G.S
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
atomic emission spectrometry
boron and zinc DDP additives
ecological compatibility
Exact sciences and technology
four-ball machine
Friction, wear, lubrication
lubricating properties
Machine components
Mechanical engineering. Machine design
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container_title Tribology international
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creator Stanulov, K.G
Harhara, H.N
Cholakov, G.S
description The influence of a boric additive on standard four-ball machine lubricating parameters of tricresylphosphate, zinc-dithiophosphate and sulphurized esters of fatty acids is studied. The consumption of active elements from the bulk oil of some of the samples is estimated by atomic emission spectrometry before and after a one hour wear test. This analysis can provide valuable information for additive and surface film studies. A considerable amount of tricresylphosphate or zinc dithiophosphate can be replaced by the boric additive in synergetic mixtures, without sacrificing lubricating properties. This opens up an opportunity for the formulation of additive packages with improved ecological compatibility.
doi_str_mv 10.1016/S0301-679X(98)00028-0
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source Elsevier ScienceDirect Journals
subjects Applied sciences
atomic emission spectrometry
boron and zinc DDP additives
ecological compatibility
Exact sciences and technology
four-ball machine
Friction, wear, lubrication
lubricating properties
Machine components
Mechanical engineering. Machine design
title An opportunity for partial replacement of phosphates and dithiophosphates in EP packages with boron-containing additives
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