TY  - CONF
EP  - 1723
ID  - scholars13588
A1  - Sabuan, N.A.
A1  - Asmelash, M.
A1  - Azhari, A.
A1  - Mulubrhan, F.
A1  - Alemu, T.
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85112555493&doi=10.1016%2fj.matpr.2020.07.520&partnerID=40&md5=24e9d145aaecd443cd7e5055036aa718
N1  - 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
KW  - Alumina; Aluminum oxide; Ceramic matrix composites; Electric conductivity; Electric discharge machining; Electric discharges; Fracture mechanics; Metallic matrix composites
KW  -  Ceramic composites; Ceramic properties; Conductive ceramics; Conductivity properties; Electrical conductivity; High hardness; High temperature hardness; Pressureless sintering process; Pressureless-sintering; Titania
KW  -  Sintering
TI  - Investigation on the electrical conductivity of Al2O3-Ti ceramic composites using a pressureless sintering process
Y1  - 2020///
SN  - 22147853
N2  - 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.
VL  - 46
AV  - none
PB  - Elsevier Ltd
SP  - 1718
ER  -