eprintid: 13588
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/35/88
datestamp: 2023-11-10 03:28:08
lastmod: 2023-11-10 03:28:08
status_changed: 2023-11-10 01:51:32
type: conference_item
metadata_visibility: show
creators_name: Sabuan, N.A.
creators_name: Asmelash, M.
creators_name: Azhari, A.
creators_name: Mulubrhan, F.
creators_name: Alemu, T.
title: Investigation on the electrical conductivity of Al2O3-Ti ceramic composites using a pressureless sintering process
ispublished: pub
keywords: Alumina; Aluminum oxide; Ceramic matrix composites; Electric conductivity; Electric discharge machining; Electric discharges; Fracture mechanics; Metallic matrix composites, Ceramic composites; Ceramic properties; Conductive ceramics; Conductivity properties; Electrical conductivity; High hardness; High temperature hardness; Pressureless sintering process; Pressureless-sintering; Titania, Sintering
note: cited By 3; Conference of Innovative Manufacturing, Mechatronics and Materials Forum, iM3F 2020 ; Conference Date: 6 August 2020 Through 6 August 2020; Conference Code:169722
abstract: Ceramics have been considered one of the important materials due to its resistance to high temperature and high hardness. However, the brittleness and low electrical conductivity properties affected the wide use of it in different applications. For example, the insulating, dielectric or low conductive ceramic property makes it difficult to be machined to the required shape and complexity using the non-conventional electrical discharge machining (EDM). The electrical conductivity of the ceramics can be improved by the addition of conductive metallic particles so that its microstructural property would be modified. Hence, the electrical conductivity of ceramic matrix composite of Alumina reinforced with Titanium (Al2O3/Ti) with different weight (w) percentage (), powder compacted and sintered, was investigated for possible electrical conductivity improvement. A new insight on the microstructural-process interaction for the improved conductivity was established. The Al2O3/Ti ceramics was observed improving its electrical conductivity as the weight percentage (wt) of Ti increases. The increase in the electrical conductivity is mainly attributed to the formation of interconnected Ti phases within the alumina matrix after sintering. The electrical conductivity sintered at 1700°C with 20wt exhibit highest improvement in electrical conductivity of 2.265-4 S/cm compared to pure of Al2O3. © 2020 Elsevier Ltd. All rights reserved.
date: 2020
publisher: Elsevier Ltd
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85112555493&doi=10.1016%2fj.matpr.2020.07.520&partnerID=40&md5=24e9d145aaecd443cd7e5055036aa718
id_number: 10.1016/j.matpr.2020.07.520
full_text_status: none
publication: Materials Today: Proceedings
volume: 46
pagerange: 1718-1723
refereed: TRUE
issn: 22147853
citation:   Sabuan, N.A. and Asmelash, M. and Azhari, A. and Mulubrhan, F. and Alemu, T.  (2020) Investigation on the electrical conductivity of Al2O3-Ti ceramic composites using a pressureless sintering process.  In: UNSPECIFIED.