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Study on properties of Al2O3-13wt.% TiO2 coating sprayed by atmospheric plasma spraying
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The Al2O3-13wt.% TiO2 coatings were fabricated on 304 steel by atmospheric plasma
spraying (APS). The properties of coating were analyzed. The results show that the
Al2O3-13wt.% TiO2 coating exhibits a typical lamellar structure with some microcracks
and pores, which are attributed to the nature of APS. The coating presents a mechanical
bond with the substrate and bonds well. Unlike the physical phase of the Al2O3-13wt.%
TiO2 powder, the physical phase of the coating was increased with γ-Al2O3 and Al2TiO5
phases. The surface roughness value of the Al2O3-13wt.% TiO2 coating is 5.07 μm and the
coating has a relatively smooth surface. The average hardness of Al2O3-13wt.% TiO2
coating is 801 HV0.2, but its hardness measurement value has a certain fluctuation. The
Al2O3-13wt.% TiO2 coating has good corrosion resistance compared to the substrate.
Title: Study on properties of Al2O3-13wt.% TiO2 coating sprayed by atmospheric plasma spraying
Description:
The Al2O3-13wt.
% TiO2 coatings were fabricated on 304 steel by atmospheric plasma
spraying (APS).
The properties of coating were analyzed.
The results show that the
Al2O3-13wt.
% TiO2 coating exhibits a typical lamellar structure with some microcracks
and pores, which are attributed to the nature of APS.
The coating presents a mechanical
bond with the substrate and bonds well.
Unlike the physical phase of the Al2O3-13wt.
%
TiO2 powder, the physical phase of the coating was increased with γ-Al2O3 and Al2TiO5
phases.
The surface roughness value of the Al2O3-13wt.
% TiO2 coating is 5.
07 μm and the
coating has a relatively smooth surface.
The average hardness of Al2O3-13wt.
% TiO2
coating is 801 HV0.
2, but its hardness measurement value has a certain fluctuation.
The
Al2O3-13wt.
% TiO2 coating has good corrosion resistance compared to the substrate.
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