Effect of process conditions on spray dried calcium carbonate powders for thermal spraying

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dc.contributor.author Chahal, HK
dc.contributor.author Matthews, S
dc.contributor.author Jones, MI
dc.date.accessioned 2021-07-27T00:13:29Z
dc.date.available 2021-07-27T00:13:29Z
dc.date.issued 2021-1-1
dc.identifier.issn 0272-8842
dc.identifier.uri https://hdl.handle.net/2292/55707
dc.description.abstract Powder preparation is an important stage in the production of thermal spray coatings with the desired characteristics. An important powder feature is flowability, which can be adjusted through particle morphology, particle size and size distribution. Combined, these features dictate the quality of the coating produced. To increase a powder's flowability, spherical particles within a particular size range are ideal. One way to achieve this is through spray drying. The aim of the present study was to investigate the effect of spray drying process parameters on the physical properties of calcium carbonate powder, with the goal of producing large, spherical particles ranging between 50 and 100 μm in preparation for thermal spray experiments. A key aspect was the use of ethanol to aide in the production of large spheres. A 2 factorial design of experiments (DoE) was utilised to study the following process parameters: gas flow rate, feed flow rate and solids loading. The resulting powders were characterised in terms of particle size, morphology and production yield. Porous, hollow, spherical particles were produced in a suitable size range for thermal spraying, which was attributed to the rapid evaporation of ethanol. Statistical analysis was utilised to interpret trends between the spray drying parameters and powder characteristics quantitatively. 3
dc.language en
dc.publisher Elsevier BV
dc.relation.ispartofseries Ceramics International
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 Technology
dc.subject Materials Science, Ceramics
dc.subject Materials Science
dc.subject Powders: chemical preparation
dc.subject Suspensions
dc.subject Drying
dc.subject Thermal applications
dc.subject HOLLOW HYDROXYAPATITE MICROSPHERES
dc.subject MICROSTRUCTURE
dc.subject MICROPARTICLES
dc.subject SIZE
dc.subject 03 Chemical Sciences
dc.subject 09 Engineering
dc.subject 19 Studies in Creative Arts and Writing
dc.title Effect of process conditions on spray dried calcium carbonate powders for thermal spraying
dc.type Journal Article
dc.identifier.doi 10.1016/j.ceramint.2020.08.140
pubs.issue 1
pubs.begin-page 351
pubs.volume 47
dc.date.updated 2021-06-16T09:40:52Z
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:000589668200002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=6e41486220adb198d0efde5a3b153e7d
pubs.end-page 360
pubs.publication-status Published
dc.rights.accessrights http://purl.org/eprint/accessRights/RetrictedAccess en
pubs.subtype Article
pubs.subtype Journal
pubs.elements-id 815753
dc.identifier.eissn 1873-3956


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