Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/151240
Full metadata record
DC FieldValueLanguage
dc.contributor.authorLi, Ruitaoen_US
dc.contributor.authorLiu, Qingen_US
dc.contributor.authorTian, Lihuien_US
dc.contributor.authorWang, Yunen_US
dc.contributor.authorKhor, Khiam Aiken_US
dc.contributor.authorZhang, Dien_US
dc.contributor.authorDong, Zhilien_US
dc.date.accessioned2021-06-09T07:53:57Z-
dc.date.available2021-06-09T07:53:57Z-
dc.date.issued2019-
dc.identifier.citationLi, R., Liu, Q., Tian, L., Wang, Y., Khor, K. A., Zhang, D. & Dong, Z. (2019). Discharge and densification in the spark plasma sintering of quasicrystal particles. Journal of Materials Science, 54(11), 8727-8742. https://dx.doi.org/10.1007/s10853-019-03489-6en_US
dc.identifier.issn0022-2461en_US
dc.identifier.other0000-0003-1701-2297-
dc.identifier.other0000-0003-2451-8528-
dc.identifier.other0000-0002-9451-7355-
dc.identifier.other0000-0001-6521-0445-
dc.identifier.other0000-0003-1954-8423-
dc.identifier.other0000-0003-2526-8954-
dc.identifier.other0000-0001-8116-6747-
dc.identifier.urihttps://hdl.handle.net/10356/151240-
dc.description.abstractTo investigate the micromechanisms involved in the spark plasma sintering of quasicrystals, thin foils were extracted from samples by focused ion beam at the interrupted states and analysed by transmission electron microscopy for the first time. Material jets are present between adjacent particles, indicating the occurrence of discharge/plasma. Surficial material melts first due to discharge and the liquid sputters as a result of the action of electric field, forming material jets. Discharge occurs in all the cavities with the largest gap size of 60 nm. Gap size is a deciding factor for the formation of material jets: Thick jets are only formed in narrow gaps (< 20 nm), while very thin jets or even no jets are present in wide gaps (> 20 nm). A low voltage (< 0.016 V) is needed to trigger the discharge, and it is inferred that quantum tunnelling and thermal excitation promote the formation of discharge within nanopores at relatively high temperatures. Discharge contributes very little to the densification, while the plastic deformation, meditated by a unique type of defect—metadislocations, is the dominant mechanism for it. The phase transformation of icosahedral Al–Cu–Fe–Cr to its crystalline approximants is accompanied by the formation of planar faults.en_US
dc.description.sponsorshipMinistry of Education (MOE)en_US
dc.language.isoenen_US
dc.relationRG93/16en_US
dc.relation.ispartofJournal of Materials Scienceen_US
dc.rights© 2019 Springer Science+Business Media, LLC, part of Springer Nature. All rights reserved.en_US
dc.subjectEngineering::Materialsen_US
dc.titleDischarge and densification in the spark plasma sintering of quasicrystal particlesen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Materials Science and Engineeringen_US
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US
dc.contributor.researchTemasek Laboratories @ NTUen_US
dc.contributor.researchResearch Techno Plazaen_US
dc.identifier.doi10.1007/s10853-019-03489-6-
dc.identifier.scopus2-s2.0-85062655270-
dc.identifier.issue11en_US
dc.identifier.volume54en_US
dc.identifier.spage8727en_US
dc.identifier.epage8742en_US
dc.subject.keywordsElectric-fielden_US
dc.subject.keywordsMechanismsen_US
dc.description.acknowledgementThis project was supported by the Ministry of Education, Singapore (AcRF Tier 1, Grant No. RG93/16), and the National Natural Science Foundation of China (Grant No. 51575245). The TEM observation was performed at the Facility for Analysis, Characterization, Testing and Simulation (FACTS) in Nanyang Technological University, Singapore.en_US
item.fulltextNo Fulltext-
item.grantfulltextnone-
Appears in Collections:MAE Journal Articles
MSE Journal Articles
TL Journal Articles

SCOPUSTM   
Citations 20

2
Updated on Jun 24, 2021

PublonsTM
Citations 20

2
Updated on Jun 27, 2021

Page view(s)

65
Updated on Oct 24, 2021

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.