Tribological behaviour of ultra dispersed diamond-graphite in liquid lubricants

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F16%3APU121850" target="_blank" >RIV/00216305:26210/16:PU121850 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.scibulcom.net" target="_blank" >http://www.scibulcom.net</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Tribological behaviour of ultra dispersed diamond-graphite in liquid lubricants

Popis výsledku v původním jazyce

A metal powder (copper, tin, lead, silver, bronze) as well as some graphite and molybdenum compounds are widely used as solid additives into oils under the high pressures and high loads. It was shown that the advantage of these additives is to reducing wear and friction as well the load between contact elements. Despite all these positives, there are inadequate rheological, anti-corrosion properties and sedimentation stability. Present studies were focused to find a new type of solid particles to create a lubricating composition with low friction. In this case, Ultra Dispersed Diamond-Graphite (UDDG) can represent the possible solution. These nanoparticles have very good physical and chemical properties, high hardness, resistance and compatibility with various types of oils and lubricants as well as environmental friendly. This paper presents experimental investigations of the influence of UDDG on friction and wear for a highly loaded lubricated contacts using tribological ball-on-disc test rig and mini traction machine. However, experimental results show, that the UDDG have the negatively influence to the friction. It seems that chemical treatment of UDDG powder dispersed in lubricant play a great role for the case of wear and friction for heavy loaded contacts.

Název v anglickém jazyce

Tribological behaviour of ultra dispersed diamond-graphite in liquid lubricants

Popis výsledku anglicky

A metal powder (copper, tin, lead, silver, bronze) as well as some graphite and molybdenum compounds are widely used as solid additives into oils under the high pressures and high loads. It was shown that the advantage of these additives is to reducing wear and friction as well the load between contact elements. Despite all these positives, there are inadequate rheological, anti-corrosion properties and sedimentation stability. Present studies were focused to find a new type of solid particles to create a lubricating composition with low friction. In this case, Ultra Dispersed Diamond-Graphite (UDDG) can represent the possible solution. These nanoparticles have very good physical and chemical properties, high hardness, resistance and compatibility with various types of oils and lubricants as well as environmental friendly. This paper presents experimental investigations of the influence of UDDG on friction and wear for a highly loaded lubricated contacts using tribological ball-on-disc test rig and mini traction machine. However, experimental results show, that the UDDG have the negatively influence to the friction. It seems that chemical treatment of UDDG powder dispersed in lubricant play a great role for the case of wear and friction for heavy loaded contacts.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/LO1202" target="_blank" >LO1202: NETME CENTRE PLUS</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of the Balkan Tribological Association

ISSN

1310-4772

e-ISSN

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Svazek periodika

22

Číslo periodika v rámci svazku

4A

Stát vydavatele periodika

BG - Bulharská republika

Počet stran výsledku

15

Strana od-do

4994-5009

Kód UT WoS článku

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EID výsledku v databázi Scopus

2-s2.0-85020519097