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The corrosion behavior of pyrocarbon (PyC) coatings exposed to Al 2 O 3 –SiO 2 gels containing ammonium nitrate (AN) was investigated. The formation of nitrogen oxides during the decomposition of AN could enable the oxidation of PyC at relatively low temperature. After corrosion by the gels, severe attack was observed and the surface roughness of the coatings increased remarkably...
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