BIUSTRE

Corrosion and mechanical behaviour of Al2o3.Tio2 composites produced by spark plasma sintering

Show simple item record

dc.contributor.author Oladijo, Oluseyi Philip
dc.contributor.author Popoola, Abimbola Patricia Idowu
dc.contributor.author Booi, M.
dc.contributor.author Fayomi, Juwon
dc.contributor.author Collieus, Lebudi L.
dc.date.accessioned 2021-06-17T11:53:34Z
dc.date.available 2021-06-17T11:53:34Z
dc.date.issued 2020-07
dc.identifier.citation Oladijo, O. P. et al (2020) Corrosion and mechanical behaviour of Al2o3.Tio2 composites produced by spark plasma sintering. South African Journal of Chemical Engineering, 33, 58-66. https://doi.org/10.1016/j.sajce.2020.05.001 en_US
dc.identifier.issn 1026-9185
dc.identifier.uri http://repository.biust.ac.bw/handle/123456789/298
dc.description.abstract Al2O3.TiO2 ceramic composites exhibit versatile properties such as high hardness and excellent wear, chemical, thermal and corrosion resistance. As such, they have been used in various applications such as optical and electronic, gas separation, biomedical processes, and support for transition metal catalysts, wear resistant coatings in machinery, textile and printing industries. However, alumina and alumina-based composites often exhibit high brittleness which limits their potential application as a structural material. In this work, TiO2 and Al2O3 powders at varying compositions were produced through spark plasma sintering (SPS) technique to form Al2O3.TiO2 composites. This study investigated the mechanical and anti-corrosion performances of Al2O3.TiO2 composites produced by SPS. A higher content of TiO2 (15wt%) resulted in a lower Vickers's hardness, thus counteracting the intrinsic brittleness in Al2O3. Wear resistance also improved with an increase in TiO2 content up to 10wt%. However, at 15wt% TiO2, wear resistance decreased due to low hardness. In the sintered samples, secondary phase Al2TiO5 was detected and its concentration increased with an increase in TiO2 content. The microstructure was well reinforced and uniformly. The corrosion resistance in 35 g/l of NaCl solution improved with an increase in the TiO2 content of up to 10wt%. However, at 15wt% TiO2, corrosion resistance decreased due to the formation of the secondary phase, Al2TiO5. en_US
dc.language.iso en en_US
dc.publisher Elsevier B.V. on behalf of Institution of Chemical Engineers (IChemE) en_US
dc.subject Al2O3.TiO2 composite en_US
dc.subject Spark plasma sintering (SPS) en_US
dc.subject Wear en_US
dc.subject Corrosion en_US
dc.title Corrosion and mechanical behaviour of Al2o3.Tio2 composites produced by spark plasma sintering en_US
dc.description.level phd en_US
dc.description.accessibility unrestricted en_US
dc.description.department cme en_US


Files in this item

Icon
Name: Oladijo_SAJCE_2020.pdf
Size: 2.604Mb
Format: PDF
View/Open

This item appears in the following Collection(s)

Show simple item record

Search BIUSTRE


Browse

My Account