Novel activated Ni-P-hBN composite powder for efficient solid lubricant coating application

As new technologies evolve, new demands are created for protective coatings which are required to have stability over a range of quite aggressive service conditions. For instance, the surfaces of shafts, bearings and steam turbine blades for use in turbine engines are to be protected against daunt...

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Main Author:	Maleque, Md. Abdul
Format:	Conference or Workshop Item
Language:	English
Published:	2015
Subjects:	TA401 Materials of engineering and construction TN600 Metallurgy TS200 Metal manufactures. Metalworking
Online Access:	http://irep.iium.edu.my/48805/ http://irep.iium.edu.my/48805/1/PECIPTA15_Silver.pdf

id	iium-48805
recordtype	eprints
spelling	iium-488052016-02-06T09:06:27Z http://irep.iium.edu.my/48805/ Novel activated Ni-P-hBN composite powder for efficient solid lubricant coating application Maleque, Md. Abdul TA401 Materials of engineering and construction TN600 Metallurgy TS200 Metal manufactures. Metalworking As new technologies evolve, new demands are created for protective coatings which are required to have stability over a range of quite aggressive service conditions. For instance, the surfaces of shafts, bearings and steam turbine blades for use in turbine engines are to be protected against daunting effect of high-temperature dry sliding wear. Under this condition, conventional liquid lubrication is inadequate due to the limitation on the temperature at which the liquid lubricant can be used; moreover, most of the materials for unlubricated hard coatings such as TiC ceramics are not suitable for dry sliding applications due to their high friction coefficient and wear rate. In order to meet the requirement of extreme and demanding tribological applications, high- performance wear resistant composite coating with outstanding self-lubricating properties have been developed in this new innovation based on the advanced lubrication concept of combining hard TiC and soft reinforcement phase of hexagonal boron nitride (hBN). hBN is a well known effective solid lubricant for high-temperature application. Due to the challenge of its non-wettability with most metal-ceramic matrices, a novel electroless plating technique was developed by the innovators to coat the surface of hBN with thin layer of Nickel-Phosphorous (Ni-P) deposits which has been patented recently. Finally, a cheaper powder preplacement and tungsten inert gas (TIG) arc torch method was employed to consolidate the newly developed composite hBN powder particles in the near-surface region of AISI 4340 low alloy steel (LAS). Laboratory tests were carried out to assess the tribological performance of the developed TiC/Ni-P-hBN hybrid composite coated steel as compared to TiC and TiC/hBN coatings. The tribological assessments of the new composite coated steel product exhibitted an improved performance in term of microstructural integrity or morphology and stable frictional control at high temperature. 2015 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/48805/1/PECIPTA15_Silver.pdf Maleque, Md. Abdul (2015) Novel activated Ni-P-hBN composite powder for efficient solid lubricant coating application. In: PECIPTA2015, 4-6 December 2015, Kuala Lumpur. (Unpublished)
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TA401 Materials of engineering and construction TN600 Metallurgy TS200 Metal manufactures. Metalworking
spellingShingle	TA401 Materials of engineering and construction TN600 Metallurgy TS200 Metal manufactures. Metalworking Maleque, Md. Abdul Novel activated Ni-P-hBN composite powder for efficient solid lubricant coating application
description	As new technologies evolve, new demands are created for protective coatings which are required to have stability over a range of quite aggressive service conditions. For instance, the surfaces of shafts, bearings and steam turbine blades for use in turbine engines are to be protected against daunting effect of high-temperature dry sliding wear. Under this condition, conventional liquid lubrication is inadequate due to the limitation on the temperature at which the liquid lubricant can be used; moreover, most of the materials for unlubricated hard coatings such as TiC ceramics are not suitable for dry sliding applications due to their high friction coefficient and wear rate. In order to meet the requirement of extreme and demanding tribological applications, high- performance wear resistant composite coating with outstanding self-lubricating properties have been developed in this new innovation based on the advanced lubrication concept of combining hard TiC and soft reinforcement phase of hexagonal boron nitride (hBN). hBN is a well known effective solid lubricant for high-temperature application. Due to the challenge of its non-wettability with most metal-ceramic matrices, a novel electroless plating technique was developed by the innovators to coat the surface of hBN with thin layer of Nickel-Phosphorous (Ni-P) deposits which has been patented recently. Finally, a cheaper powder preplacement and tungsten inert gas (TIG) arc torch method was employed to consolidate the newly developed composite hBN powder particles in the near-surface region of AISI 4340 low alloy steel (LAS). Laboratory tests were carried out to assess the tribological performance of the developed TiC/Ni-P-hBN hybrid composite coated steel as compared to TiC and TiC/hBN coatings. The tribological assessments of the new composite coated steel product exhibitted an improved performance in term of microstructural integrity or morphology and stable frictional control at high temperature.
format	Conference or Workshop Item
author	Maleque, Md. Abdul
author_facet	Maleque, Md. Abdul
author_sort	Maleque, Md. Abdul
title	Novel activated Ni-P-hBN composite powder for efficient solid lubricant coating application
title_short	Novel activated Ni-P-hBN composite powder for efficient solid lubricant coating application
title_full	Novel activated Ni-P-hBN composite powder for efficient solid lubricant coating application
title_fullStr	Novel activated Ni-P-hBN composite powder for efficient solid lubricant coating application
title_full_unstemmed	Novel activated Ni-P-hBN composite powder for efficient solid lubricant coating application
title_sort	novel activated ni-p-hbn composite powder for efficient solid lubricant coating application
publishDate	2015
url	http://irep.iium.edu.my/48805/ http://irep.iium.edu.my/48805/1/PECIPTA15_Silver.pdf
first_indexed	2023-09-18T21:09:09Z
last_indexed	2023-09-18T21:09:09Z
_version_	1777411135466635264

Novel activated Ni-P-hBN composite powder for efficient solid lubricant coating application

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