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Article: Effects of graphite powder on the laser sintering behaviour of polycarbonate

TitleEffects of graphite powder on the laser sintering behaviour of polycarbonate
Authors
KeywordsEnergy Methods
Sintering
Issue Date2002
PublisherEmerald Group Publishing Limited. The Journal's web site is located at http://www.emeraldinsight.com/info/journals/rpj/rpj.jsp
Citation
Rapid Prototyping Journal, 2002, v. 8 n. 4, p. 233-242 How to Cite?
AbstractA non-contact infrared temperature sensor was used to monitor the temperature-time relation of a point on the powder bed during laser sintering. The results were translated into a temperature-distance relation of the monitored spot with respect to its distance from the laser beam. The effect of particle size of polycarbonate (PC) powder on the temperature-distance relation was studied. The maximum temperature attained at the monitored spot was found to increase with decreasing size of the PC particles. The phenomenon was probably caused by the higher packing density of the smaller particles, and more laser energy was absorbed near the powder bed surface. The temperature-distance relations of some common additives such as graphite, quartz, silica and talc were also studied, and graphite was found to give the highest temperature distribution. PC/graphite composite powders were blended and sintered under similar conditions. The surface temperature of the powder bed increased greatly with the addition of a small amount (up to 2 per cent) of graphite powder. The result was attributed to the higher absorptance of CO 2 laser energy by the graphite powder.
Persistent Identifierhttp://hdl.handle.net/10722/156622
ISSN
2015 Impact Factor: 1.352
2015 SCImago Journal Rankings: 0.808
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHo, HCHen_US
dc.contributor.authorCheung, WLen_US
dc.contributor.authorGibson, Ien_US
dc.date.accessioned2012-08-08T08:43:14Z-
dc.date.available2012-08-08T08:43:14Z-
dc.date.issued2002en_US
dc.identifier.citationRapid Prototyping Journal, 2002, v. 8 n. 4, p. 233-242en_US
dc.identifier.issn1355-2546en_US
dc.identifier.urihttp://hdl.handle.net/10722/156622-
dc.description.abstractA non-contact infrared temperature sensor was used to monitor the temperature-time relation of a point on the powder bed during laser sintering. The results were translated into a temperature-distance relation of the monitored spot with respect to its distance from the laser beam. The effect of particle size of polycarbonate (PC) powder on the temperature-distance relation was studied. The maximum temperature attained at the monitored spot was found to increase with decreasing size of the PC particles. The phenomenon was probably caused by the higher packing density of the smaller particles, and more laser energy was absorbed near the powder bed surface. The temperature-distance relations of some common additives such as graphite, quartz, silica and talc were also studied, and graphite was found to give the highest temperature distribution. PC/graphite composite powders were blended and sintered under similar conditions. The surface temperature of the powder bed increased greatly with the addition of a small amount (up to 2 per cent) of graphite powder. The result was attributed to the higher absorptance of CO 2 laser energy by the graphite powder.en_US
dc.languageengen_US
dc.publisherEmerald Group Publishing Limited. The Journal's web site is located at http://www.emeraldinsight.com/info/journals/rpj/rpj.jspen_US
dc.relation.ispartofRapid Prototyping Journalen_US
dc.subjectEnergy Methodsen_US
dc.subjectSinteringen_US
dc.titleEffects of graphite powder on the laser sintering behaviour of polycarbonateen_US
dc.typeArticleen_US
dc.identifier.emailCheung, WL:wlcheung@hkucc.hku.hken_US
dc.identifier.authorityCheung, WL=rp00103en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1108/13552540210441148en_US
dc.identifier.scopuseid_2-s2.0-0036037988en_US
dc.identifier.hkuros76912-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0036037988&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume8en_US
dc.identifier.issue4en_US
dc.identifier.spage233en_US
dc.identifier.epage242en_US
dc.identifier.isiWOS:000178077300004-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridHo, HCH=7401465514en_US
dc.identifier.scopusauthoridCheung, WL=7202743084en_US
dc.identifier.scopusauthoridGibson, I=15831816500en_US

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