Comparing Tribochemical Film Formation and Durability at Steel and CrN Coating Interface in Boundary Lubrication

One of the main challenges that engine oil manufacturers are now facing is to reduce friction losses while at the same time increasing the durability of engine components. New materials are being used for engine components, alongside and to replace conventional ferrous materials. More components ar...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Ardian Morina, Tabassumul Haque, Anne Neville
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2010
Materias:	tribofilm formation tribofilm removal tribochemistry zddp modtc Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/a71700bbe734473eb293a0b709b050ce
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:a71700bbe734473eb293a0b709b050ce
record_format	dspace
spelling	oai:doaj.org-article:a71700bbe734473eb293a0b709b050ce2021-11-05T09:26:56ZComparing Tribochemical Film Formation and Durability at Steel and CrN Coating Interface in Boundary Lubrication1881-219810.2474/trol.5.187https://doaj.org/article/a71700bbe734473eb293a0b709b050ce2010-10-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/5/4/5_4_187/_pdf/-char/enhttps://doaj.org/toc/1881-2198One of the main challenges that engine oil manufacturers are now facing is to reduce friction losses while at the same time increasing the durability of engine components. New materials are being used for engine components, alongside and to replace conventional ferrous materials. More components are being coated with low friction and highly durable coatings. Lubricants are required to lubricate these surfaces as effectively as conventional materials, with no environmental impact. Knowing that the additive package in today’s lubricants is optimised for lubricating conventional ferrous materials it is of paramount importance to understand how effective the current additives are in lubricating non-ferrous materials.The aim of the current paper is to understand the formation and durability of tribofilms on a Chromium Nitride (CrN) coating formed from two conventional additives; Zinc Dialkyldithiophosphate (ZDDP) and Molybdenum Dialkyl Dithiocarbamate (MoDTC) additives. Tribofilm formation was studied by testing model lubricants containing ZDDP and MoDTC additives on the CrN coating in boundary lubrication, taking the performance on a ferrous system as a reference. The durability was assessed by assessing the tribocouple friction performance in base oil once the tribofilm was formed. Wear scars were fully chemically characterised using X-ray Photoelectron Spectroscopy (XPS). The study shows that the chemical nature of the tribofilms formed on steel and CrN is similar. In both materials, tribofilms were shown to have comparable durability. The factors which affect tribofilm durability and formation, and the reason why ferrous systems and CrN show similarities are discussed.Ardian MorinaTabassumul HaqueAnne NevilleJapanese Society of Tribologistsarticletribofilm formationtribofilm removaltribochemistryzddpmodtcPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 5, Iss 4, Pp 187-194 (2010)
institution	DOAJ
collection	DOAJ
language	EN
topic	tribofilm formation tribofilm removal tribochemistry zddp modtc Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	tribofilm formation tribofilm removal tribochemistry zddp modtc Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Ardian Morina Tabassumul Haque Anne Neville Comparing Tribochemical Film Formation and Durability at Steel and CrN Coating Interface in Boundary Lubrication
description	One of the main challenges that engine oil manufacturers are now facing is to reduce friction losses while at the same time increasing the durability of engine components. New materials are being used for engine components, alongside and to replace conventional ferrous materials. More components are being coated with low friction and highly durable coatings. Lubricants are required to lubricate these surfaces as effectively as conventional materials, with no environmental impact. Knowing that the additive package in today’s lubricants is optimised for lubricating conventional ferrous materials it is of paramount importance to understand how effective the current additives are in lubricating non-ferrous materials.The aim of the current paper is to understand the formation and durability of tribofilms on a Chromium Nitride (CrN) coating formed from two conventional additives; Zinc Dialkyldithiophosphate (ZDDP) and Molybdenum Dialkyl Dithiocarbamate (MoDTC) additives. Tribofilm formation was studied by testing model lubricants containing ZDDP and MoDTC additives on the CrN coating in boundary lubrication, taking the performance on a ferrous system as a reference. The durability was assessed by assessing the tribocouple friction performance in base oil once the tribofilm was formed. Wear scars were fully chemically characterised using X-ray Photoelectron Spectroscopy (XPS). The study shows that the chemical nature of the tribofilms formed on steel and CrN is similar. In both materials, tribofilms were shown to have comparable durability. The factors which affect tribofilm durability and formation, and the reason why ferrous systems and CrN show similarities are discussed.
format	article
author	Ardian Morina Tabassumul Haque Anne Neville
author_facet	Ardian Morina Tabassumul Haque Anne Neville
author_sort	Ardian Morina
title	Comparing Tribochemical Film Formation and Durability at Steel and CrN Coating Interface in Boundary Lubrication
title_short	Comparing Tribochemical Film Formation and Durability at Steel and CrN Coating Interface in Boundary Lubrication
title_full	Comparing Tribochemical Film Formation and Durability at Steel and CrN Coating Interface in Boundary Lubrication
title_fullStr	Comparing Tribochemical Film Formation and Durability at Steel and CrN Coating Interface in Boundary Lubrication
title_full_unstemmed	Comparing Tribochemical Film Formation and Durability at Steel and CrN Coating Interface in Boundary Lubrication
title_sort	comparing tribochemical film formation and durability at steel and crn coating interface in boundary lubrication
publisher	Japanese Society of Tribologists
publishDate	2010
url	https://doaj.org/article/a71700bbe734473eb293a0b709b050ce
work_keys_str_mv	AT ardianmorina comparingtribochemicalfilmformationanddurabilityatsteelandcrncoatinginterfaceinboundarylubrication AT tabassumulhaque comparingtribochemicalfilmformationanddurabilityatsteelandcrncoatinginterfaceinboundarylubrication AT anneneville comparingtribochemicalfilmformationanddurabilityatsteelandcrncoatinginterfaceinboundarylubrication
_version_	1718444366509375488

Comparing Tribochemical Film Formation and Durability at Steel and CrN Coating Interface in Boundary Lubrication

Ejemplares similares