Al2O3 + TiO2 Thin Film made by Electrostatic Spray Deposition

Krella, Alicja; Krupa, A.; Sobczyk, Arkadiusz; Jaworek, A.

doi:10.1515/adms-2016-0016

Cited by 2 publications

(1 citation statement)

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“…Numerous studies have been made on the electrostatic wet spray coating of ceramic powder to deposit a thin film of Al2O3 with TiO2 ceramic on CrAlSi18 steel as a substrate from the colloidal suspension of TiO2 powder in Al2O3 precursor solution [10,11]. Two different epoxy polyester powders were electrostatically spread on carbon steel sheets as well [12,13].…”

Section: Introductionmentioning

confidence: 99%

Morphology and Mechanical Properties of a Composite Coating by Electrostatic Dry Spray Method

Al-Shroofy

Al-Kaisy

Chalaby

2021

KEM

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Powder spray coating was used for many applications such as paint decoration and protection against corrosive environments. The electrostatic spray method is used to lower the manufacturing cost and the environmental effect during the production process. It is done by electrostatic device and spray gun to create a layer on the substrate to play a protective role. Different dry powders were mixed to form a composite mixture consisted of Al2O3 and SiC or ZrSiO4 with Al powder as a binder. The powders mixture was deposited by electrostatic spray technique with a high voltage of 15 kV on a low carbon steel substrate of (40 x 10 x 4) mm in dimensions. Two groups of mixtures were used to form the coating layers. Powders of Al2O3 with (20 and 40) weight percent (wt%) of SiC as the first group and (20 and 40) wt% of ZrSiO4 as the second group were used. 5 wt% of Al powder was added as a binder, and the samples were heat treated at 900 C° for 2 hours. A detailed characterization of the composite coating layers was performed using XRD, SEM, and EDX, as well as, micro-hardness measurements. The obtained surface composite layers were smooth and having good particle distribution which leads to enhance roughness values (Ra). Furthermore, the hardness increased with increasing the amount of carbide and zirconia, and the obtained layers show no presence of defects or cracks.

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