Characterisations Of Al{sub 2}O{sub 3}-13% Wt TiO{sub 2} Deposition On Mild Steel Via Plasma Spray Method

Journal Article · Sun Jan 16 23:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3552412· OSTI ID:21510165

Yusoff, N H; Isa, M C ^[1]; Ghazali, M J; Muchtar, A; Forghani, S ^[2]; Daud, A R ^[3]

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1. Maritime Technology Divison, Science And Technology Research Institute For Defence (STRIDE) c/o KD MALAYA 32100 Pangkalan TLDM, Lumut, Perak (Malaysia)
2. Dept. of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Selangor (Malaysia)
3. School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Selangor (Malaysia)

To date, plasma sprayed alumina titania have been widely used as wear resistance coatings in textile, machinery and printing industries. Previous studies showed that the coating microstructures and properties were strongly depended on various parameters such as ceramic composition, grain size powders and spray parameters, thus, influencing the melting degree of the alumina titania during the deposition process. The aim of this study focuses on the evolution of the micron sizes of alumina-13%wt titania at different plasma spray power, ranging from 20kW to 40kW. It was noted that the coating porosity of alumina-13%wt titania were decreased from 6.2% to 4% by increasing the plasma power from 20 to 40 kW. At lower power value, partially melted powders were deposited, generating over 6% porosity within the microstructures. Percentage of porosity about 5.6% gave the best ratio of bi-modal structures, providing the highest microhardness value. Furthermore, the effect of microstructure and porosity formation on wear resistance was also discussed. Coatings with less porosity exhibited better resistance to wear, in which the wear resistance of coated mild steel possessed only {approx}5 x 10{sup -4} cm{sup 3}/Nm with 4% of porosity.

• OSTI ID: 21510165
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1315; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBON ADDITIONS
CERAMICS
CHALCOGENIDES
COATINGS
DEPOSITION
GRAIN SIZE
HARDNESS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
MELTING
MICROHARDNESS
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
POROSITY
POROUS MATERIALS
POWDERS
SIZE
SPRAYED COATINGS
SPRAYS
STEELS
TEXTILES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT ALLOYS
TRANSITION ELEMENT COMPOUNDS
WEAR RESISTANCE