Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorKhor, Khiam Aiken
dc.contributor.authorYu, L. G.en
dc.contributor.authorMurakoshi, Y.en
dc.identifier.citationKhor, K. A., Yu, L. G., & Murakoshi, Y. (2004). Spark plasma sintering of Sm2O3-doped aluminum nitride. Journal of the European Ceramic Society, 25(7), 1057–1065.en
dc.description.abstractThe high sintering temperature required for aluminum nitride (AlN) at typically 1800 °C, is an impediment to its development as an engineering material. Spark plasma sintering (SPS) of AlN is carried out with samarium oxide (Sm2O3) as sintering additive at a sintering temperature as low as 1500–1600 °C. The effect of sintering temperature and SPS cycle on the microstructure and performance of AlN is studied. There appears to be a direct correlation between SPS temperature and number of repeated SPS sintering cycle per sample with the density of the final sintered sample. The addition of Sm2O3 as a sintering aid (1 and 3 wt.%) improves the properties and density of AlN noticeably. Thermal conductivity of AlN samples improves with increase in number of SPS cycle (maximum of 2) and sintering temperature (up to 1600 °C). Thermal conductivity is found to be greatly improved with the presence of Sm2O3 as sintering additive, with a thermal conductivity value about 118 W m−1 K−1) for the 3 wt.% Sm2O3-doped AlN sample SPS at 1500 °C for 3 min. Dielectric constant of the sintered AlN samples is dependent on the relative density of the samples. The number of repeated SPS cycle and sintering aid do not, however, cause significant elevation of the dielectric constant of the final sintered samples. Microstructures of the AlN samples show that, densification of AlN sample is effectively enhanced through increase in the operating SPS temperature and the employment of multiple SPS cycles. Addition of Sm2O3 greatly improves the densification of AlN sample while maintaining a fine grain structure. The Sm2O3 dopant modifies the microstructures to decidedly faceted AlN grains, resulting in the flattening of AlN–AlN grain contacts.en
dc.format.extent16 p.en
dc.relation.ispartofseriesJournal of the european ceramic societyen
dc.rights© 2004 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of the European Ceramic Society, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at DOI: [].en
dc.subjectDRNTU::Engineering::Mechanical engineeringen
dc.titleSpark plasma sintering of Sm2O3-doped aluminum nitrideen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen
dc.description.versionAccepted versionen
item.fulltextWith Fulltext-
Appears in Collections:MAE Journal Articles
Files in This Item:
File Description SizeFormat 
2. Spark Plasma Sintering of Sm2O3-Doped Aluminum Nitride.pdf616.26 kBAdobe PDFThumbnail

Citations 10

Updated on May 22, 2023

Web of ScienceTM
Citations 10

Updated on May 28, 2023

Page view(s) 5

Updated on Jun 4, 2023

Download(s) 5

Updated on Jun 4, 2023

Google ScholarTM




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