Corrosion resistance of micro-arc oxidized ceramic coating on cast hypereutectic alloy

Guo, Qiaoqin; Jiang, Bailing; Li, Jianping; Li, Gaohong; Xia, Feng

doi:10.1016/s1003-6326(09)60443-x

Cited by 12 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The coated samples showed better corrosion resistance than bare steel. Thus ceramic coating is a better choice to resist corrosion, wear, high temperature oxidation [27][28][29]. The surface coating of Al2O3 and TiO 2 are widely used to enhance the resistance of material against erosion, wear, cavitation and corrosion.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Comparative study of hot corrosion behavior of thermal sprayed alumina and titanium oxide reinforced alumina coatings on boiler steel

Singh

Kumar

2020

Mater. Res. Express

View full text Add to dashboard Cite

The current work evaluates the effect of hot corrosion on ASTM-SA213-T-22 Steel with a coating of 100Al 2 O 3 and 20TiO 2 -Al 2 O 3 at 900°C in the molten salt environment of (Na 2 SO 4 -60% V 2 O 5 ). The coatings were sprayed by plasma spray technique. The bare and coated samples were placed inside the muffle furnace at 900°C for 50 cycles. Each cycle consisted of heating for 1 h and 20 min of cooling at ambient temperature. The kinetics of hot corrosion was analyzed by measuring mass gain after each cycle. The results were achieved by using visual examination, mass change measurement, XRD and SEM/EDS analysis. The result revealed that bare steel was more affected with corrosion and gained more mass due to the development of iron oxide (Fe 2 O 3 ) than the coated sample. Fe 2 O 3 and Cr 2 O 3 were found as major phase in oxide scale of T-22 uncoated steel specimen. The 100Al 2 O 3 and 20TiO 2 -Al 2 O 3 coated specimen indicated the reduction in mass gain by 25.41% and 67.02% respectively as compared to uncoated specimen. Al 2 O 3 coating with the combination of TiO 2 showed better adhesion properties. The presence of TiO 2 enhanced the durability and strength of Al 2 O 3 coating to withstand high temperatures.

show abstract

Section: Introductionmentioning

confidence: 99%

RETRACTED: Comparative study of hot corrosion behavior of thermal sprayed alumina and titanium oxide reinforced alumina coatings on boiler steel

Singh

Kumar

2020

Mater. Res. Express

View full text Add to dashboard Cite

show abstract

“…[11][12][13][14][15] Ceramics are widely applied as protective coating because of their excellent wear, corrosion and high temperature oxidation resistance. [16][17][18] Surface coatings of aluminium and titanium oxides are used to improve the resistances of materials against wear, erosion, cavitations, fretting and corrosion. Al 2 O 3 -TiO 2 coating with varying proportions of Al 2 O 3 and TiO 2 are used in combustion chambers of diesel engines, * Author for correspondence (sbmishra@mnnit.ac.in) cutting tools and other industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Hot corrosion performance of LVOF sprayed Al2O3–40% TiO2 coating on Superni 601 and Superco 605 superalloys at 800 and 900°C

Mishra

2015

Bull Mater Sci

View full text Add to dashboard Cite

Al 2 O 3-40% TiO 2 coating is deposited on Superni 601 and Superco 605 superalloys by low-velocity oxy-fuel (LVOF) process. LVOF sprayed coating is characterized for surface roughness, microhardness, scanning electron microscopy and X-ray diffraction analysis. Hot corrosion of the coated and uncoated superalloys have been evaluated in an aggressive environment of Na 2 SO 4-82% Fe 2 (SO 4) 3 under cyclic conditions at temperatures of 800 and 900 • C. The microhardness and surface roughness values of the as-sprayed coatings are found to be in the range of 742-946 Hv and 14.40-14.80 μm, respectively. Al 2 O 3-40% TiO 2 coating on both the superalloys has indicated protective behaviour during hot corrosion studies. Keywords. Superalloy; Al 2 O 3-40% TiO 2 coating; LVOF; microhardness; hot corrosion.

show abstract

“…The Al in the phase was derived from the aluminum layer which was not oxidized by micro‐arc. Due to the existence of some pores in the ceramic coating, X‐rays can penetrate the ceramic coating to detect the Al element …”

Section: Resultsmentioning

confidence: 99%

Effect of current density on micro‐arc oxidation of Q235 steel and corrosion resistance in liquid Pb‐Bi

Zhu

Zhang

et al. 2019

Materials & Corrosion

View full text Add to dashboard Cite

An attempt has been made to improve the corrosion resistance in liquid Pb-Bi by micro-arc oxidation (MAO), and the effects under different current densities on the corrosion resistance of the coatings were discussed. Scanning electron microscope, energy dispersive spectrometer, and X-ray diffraction were used to analyze the surface morphology and phase constituents of the MAO coatings produced under different current densities. The corrosion resistance of the coatings was evaluated by studying the element changes and morphology evolution. The results show that the compactness of the ceramic coating decreases with the current density increasing. In contrast to the performance of matrix metal, the ceramic coating exhibited a much better corrosion resistance in liquid Pb-Bi. Moreover, the ceramic coating produced under current density of 10 A/dm 2 shows the best corrosion resistance. K E Y W O R D S current density, fusion-brazing, liquid Pb-Bi corrosion, micro-arc oxidation

show abstract

Corrosion resistance of micro-arc oxidized ceramic coating on cast hypereutectic alloy

Cited by 12 publications

References 6 publications

RETRACTED: Comparative study of hot corrosion behavior of thermal sprayed alumina and titanium oxide reinforced alumina coatings on boiler steel

RETRACTED: Comparative study of hot corrosion behavior of thermal sprayed alumina and titanium oxide reinforced alumina coatings on boiler steel

Hot corrosion performance of LVOF sprayed Al2O3–40% TiO2 coating on Superni 601 and Superco 605 superalloys at 800 and 900°C

Effect of current density on micro‐arc oxidation of Q235 steel and corrosion resistance in liquid Pb‐Bi

Contact Info

Product

Resources

About