ISSN 1070-4272, Russian Journal of Applied Chemistry, 2016, Vol. 89, No. 12, pp. 2091−2094. © Pleiades Publishing, Ltd., 2016.
The text was submitted by the authors in English.
Ceramic coatings with high corrosion resistance and
wear resistance are widely used to improve the surface
properties of components in the ﬁ eld of the aerospace,
military, and the automotive industry [1–3]. Yao et al. 
fabricated a plasma electrolytic oxidation ceramic coating
on Mg–Li alloys and the coating shows an excellent
corrosion resistance. Mohammadreza et al.  prepared
a nanocomposite oxidation coating on Mg–1% Ca alloy
and the coating can signiﬁ cantly improve the corrosion
The chemically bonded ceramic coatings are an ideal
candidate for ceramic coatings applied for components
because this kind of alumina-based ceramic coatings
could be formed at a low temperature and simple
application. Bian et al. [6, 7] performed electrochemical
tests to investigate the inﬂ uence of graphene and nano
alumina on the corrosion resistance of chemically
bonded ceramic coatings. And it was found that the
addition of graphene and nanoalumina to the coatings
resulted in the improvements of the corrosion resistance.
Shen et al.  fabricated the ceramic coating on
magnesium alloy to study the corrosion resistance of the
coating. The coating shows a well corrosion resistance.
The authors have been among the recently active
researchers making efforts to further improve the cor-
rosion resistance of the chemically bonded ceramic
coatings. And it is founded that zinc oxide has an obvi-
ously effect on the corrosion resistance of the coating. In
present paper, the inﬂ uence of zinc oxide on corrosion
resistance is investigated with polarization curves in
5 wt % NaCl solution.
Inﬂ uence of Zinc Oxide on Corrosion Resistance
of Alumina Based Chemically Bonded
Da Bian, Yongxin Guo, and Yongwu Zhao
College of Mechanical Engineering, Jiangnan University, Wuxi 214100, Jiangsu, China
Received January 31, 2017
Abstract—With thermal chemical reaction, the chemically bonded ceramic coatings are prepared on A3
steel. Inﬂ uence of zinc oxide on corrosion resistance of the coating is investigated by corrosion polarization
analysis. It is found that the chemically bonded ceramic coatings show the outstanding corrosion resistance.
In addition, the coating with zinc oxide possesses a smaller reaction rate and corrosion current density than
the coating without zinc oxide. Scanning electron microscope (SEM) analysis and X-ray diffraction (XRD)
analysis are conducted to ﬁ nd the reason. Without adding zinc oxide, AlPO
is the main binding phase
connecting with the particles in the coating, and the micro structure of the particles can be seen clearly.
However, with adding zinc oxide, a new binding phase Zn
is found in the coating. Besides, the
particles in the coating are fully covered with Zn
, and the micro structure of the particles
cannot be clearly seen. The particles have a better cover with the binding phase compared with the particles
without zinc oxide. Therefore, adding zinc oxide makes the coating more compact that hinders access of
, and Cl
to the substrate with the compact coatings, which improves the corrosion resistance of the
chemically bonded ceramic coatings.