dc.contributor.author |
Zhang, Yongang |
|
dc.contributor.author |
Matthews, Steve |
|
dc.contributor.author |
Munroe, Paul |
|
dc.contributor.author |
Hyland, Margaret |
|
dc.date.accessioned |
2021-07-27T00:34:29Z |
|
dc.date.available |
2021-07-27T00:34:29Z |
|
dc.date.issued |
2019-11-1 |
|
dc.identifier.issn |
0169-4332 |
|
dc.identifier.uri |
https://hdl.handle.net/2292/55710 |
|
dc.description.abstract |
The effect of chromium substrate preheating on the spreading behavior of plasma-sprayed nickel splats was characterized. The interfacial features along the splat-substrate interface were analyzed by focused ion beam (FIB) microscopy and transmission electron microscopy (TEM). In addition, the transient droplet spreading process was modelled in a simulation study. The results showed that the presence of a large fraction of surface moisture on the substrates induced splat fragmentation. However, splat fragmentation was completely constrained on chromium preheated to a low temperature (373 K) where a certain amount of surface moisture was still present. The high thermal conductivity of chromium substrates increased droplet solidification rates, decreasing the interaction time between the spreading droplet and the vaporized gas layer. Accordingly, splat fragmentation was suppressed and disk-shaped splats were formed. Fast solidification not only refined the final splat microstructure, but also promoted the formation of finger-splashed disk splats. In addition, the extent of elemental diffusion across the splat-substrate interface was decreased due to the low interfacial temperature. |
|
dc.language |
en |
|
dc.publisher |
Elsevier BV |
|
dc.relation.ispartofseries |
Applied Surface Science |
|
dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. |
|
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
|
dc.subject |
Science & Technology |
|
dc.subject |
Physical Sciences |
|
dc.subject |
Technology |
|
dc.subject |
Chemistry, Physical |
|
dc.subject |
Materials Science, Coatings & Films |
|
dc.subject |
Physics, Applied |
|
dc.subject |
Physics, Condensed Matter |
|
dc.subject |
Chemistry |
|
dc.subject |
Materials Science |
|
dc.subject |
Physics |
|
dc.subject |
Droplet cooling |
|
dc.subject |
Splat morphology |
|
dc.subject |
Splat-substrate interface |
|
dc.subject |
Plasma spraying |
|
dc.subject |
FLATTENING BEHAVIOR |
|
dc.subject |
MICROSTRUCTURE FORMATION |
|
dc.subject |
SURFACE-CHEMISTRY |
|
dc.subject |
STAINLESS-STEEL |
|
dc.subject |
PARTICLES |
|
dc.subject |
SOLIDIFICATION |
|
dc.subject |
TEMPERATURE |
|
dc.subject |
FRAGMENTATION |
|
dc.subject |
SIMULATION |
|
dc.subject |
RESISTANCE |
|
dc.title |
Plasma-sprayed nickel splats on chromium substrates: The role of substrate preheating and thermal conductivity |
|
dc.type |
Journal Article |
|
dc.identifier.doi |
10.1016/j.apsusc.2019.06.266 |
|
pubs.begin-page |
124 |
|
pubs.volume |
494 |
|
dc.date.updated |
2021-06-16T09:43:23Z |
|
dc.rights.holder |
Copyright: The author |
en |
pubs.author-url |
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000487838900018&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=6e41486220adb198d0efde5a3b153e7d |
|
pubs.end-page |
136 |
|
pubs.publication-status |
Published |
|
dc.rights.accessrights |
http://purl.org/eprint/accessRights/RestrictedAccess |
en |
pubs.subtype |
Article |
|
pubs.subtype |
Journal |
|
pubs.elements-id |
779009 |
|
dc.identifier.eissn |
1873-5584 |
|