Cost-effective wear and oxidation resistant electrodeposited Ni–pumice coating
IR@NAL: CSIR-National Aerospace Laboratories, Bangalore
View Archive Info| Field | Value | |
| Title |
Cost-effective wear and oxidation resistant electrodeposited
Ni–pumice coating
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| Creator |
Aruna, ST
Roy, Shibayan Sharma, A Savitha, G William Grips, VK |
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| Subject |
Aeronautics (General)
Composite Materials |
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| Description |
In the search for newer distributed phases that can be used in Ni-composite coatings, inexpensive and naturally
available pumice has been identified as a potential candidate material. The composition of the pumice mineral as
determined by Rietveld analysis shows the presence of corundum, quartz, mulllite, moganite and coesite phases.
Pumice stone is crushed, ball-milled, dried and dispersed in a nickel sulfamate bath and Ni–pumice coatings are
electrodeposited at different current densities and magnetic agitation speeds. Pumice particles are uniformly
incorporated in the nickel matrix and Ni–pumice composite coatings with microhardness as high as 540 HK are obtained at the lowest applied current density. In the electrodeposited Ni–pumice coatings, the grain size of Ni increaseswith the applied current density. The overall intensity of texture development is slightly stronger
for the Ni–pumice composite coating compared to plain Ni coating and the texture evolution is possibly not the
strongest deciding factor for the enhanced properties of Ni–pumice coatings. The wear and oxidation resistances
of Ni-pumice coating are commensurate with that of Ni-SiC coating electrodeposited under similar conditions.
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| Publisher |
Elsevier Publisher
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| Date |
2014
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| Type |
Journal Article
PeerReviewed |
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| Format |
application/pdf
application/pdf |
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| Identifier |
http://nal-ir.nal.res.in/11997/1/Ni%2Dpumice.pdf
http://nal-ir.nal.res.in/11997/2/ja519POST.pdf Aruna, ST and Roy, Shibayan and Sharma, A and Savitha, G and William Grips, VK (2014) Cost-effective wear and oxidation resistant electrodeposited Ni–pumice coating. Surface and Coatings Technology, 251 . pp. 201-209. ISSN 0257-8972 |
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| Relation |
http://nal-ir.nal.res.in/11997/
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