Tribotechnical Lubricant and Lubricant Composition
a lubricant and tribotechnical technology, applied in the field of tribotechnical lubricant and lubricant composition, can solve the problems of high price of individual fullerene csub>60 /sub>, and limit the use of this lubricant in a wellbor
Inactive Publication Date: 2008-09-18
KUSHCH SERGEY DMITRIEVICH
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Benefits of technology
The invention relates to a new type of carbon, called x-ray amorphous carbon, which has specific properties that make it useful in various applications. The carbon has small particles with a size of 30-50 nm, and is highly reactive with oxygen. It has a high concentration of nonconjugated double bonds and a high degree of unsaturation. The carbon can be produced using various methods, such as electroarc or laser evaporation of carbonic material. The carbon has been found to have excellent properties as a lubricant, with a high surface concentration of nonconjugated double bonds and a high degree of unsaturation. The carbon can be used in a lubricant composition with a base oil. The technical effects of the invention include improved performance and durability of lubricants, as well as improved fuel efficiency and reduced emissions in engines.
Problems solved by technology
% of powder of fullerene-containing soot or its powder after fullerene extraction include incompatible hydrated lime soaps and hydrophobic soot as a result of this homogeneous lubricant can not be produced.
A such composition used high-priced additives, some from which is unstable in operational environment.
The high price of individual fullerene C60 and limitation of this lubricant use in a wellbore only.
Method used
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Embodiment Construction
[0061]A tribotechnical test of both tribotechnical lubricant and lubricant composition are carried out by a device providing of rider back-and-forth motion with respect to stationary sample. A tested sample in disk form with friction surface as plane-parallel plate with size of 5×8 mm2 on it are made from 45 steel. A rider as platen with size of 90×22 mm2 thick of 5 mm is made from 65 G steel. A friction surfaces of both sample and rider are polished to roughness Ra equal of 0.32-0.35 μm.
[0062]A rider slip velocity is equal of 0.1 m•sec−1. The E-40A oil is used as base oil. A wear of samples are measured by gravimetric method with following recalculation to a linear wear. An intensity of linear wear is calculated as Ih=h / L wherein h is thickness of thickness frayed layer in length units on sliding distance L.
[0063]A friction of 45 steel on 65 G steel is accompanied by intensive adhesive contact of both materials of this tribological situation. A streaky microrelief with grip traces ...
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Abstract
The tribotechnical lubricant and lubricant composition may be used for friction decrease in friction units of machinery and equipments included heavy-loaded ones in aging and operation process. The tribotechnical lubricant contains x-ray amorphous carbon characterized by particle size by electron microscopy of 30 50 nm, temperature of oxidation beginning in air is not more than 300° C., nonconjugated double bonds concentration determinated on interaction with neutral potassium permanganate solution is not less than one per 5 carbon atoms, paramagnetic centers concentration on ESR-line with g factor 2,022 is not less than one per 1200 carbon atoms. The lubricant composition contains a base oil and x-ray amorphous carbon.
Description
RELATED APPLICATIONS[0001]This application claims priority to Russian Patent Application No. RU 2007105032 filed on Feb. 6, 2007, which is incorporated herein by reference in its entirety.FIELD OF THE INVENTION[0002]The present invention relates to petroleum refining, oil and grease production and to lubricant composition destined for reducing friction in friction units of machinery and equipments included heavy-loaded ones in aging and operation process.BACKGROUND OF THE INVENTION[0003]A semisolid lubricant (RU2268291, published 20 Jan. 2006) containing base viscous lubrication and carbon additive such as 1-5 wt. % of powder of fullerene-containing soot or its powder after fullerene extraction include incompatible hydrated lime soaps and hydrophobic soot as a result of this homogeneous lubricant can not be produced.[0004]Also a lubricant (U.S. Pat No. 5,958,523, published 28 Sep. 1999) as product of interaction of fullerene and polytetrafluoroethylene as a whole or in aprotic solve...
Claims
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IPC IPC(8): C10M113/02
CPCC10M103/02C10N2230/06C10N2220/082C10N2020/06C10N2030/06
Inventor KUSHCH, SERGEY DMITRIEVICH
Owner KUSHCH SERGEY DMITRIEVICH