Surfaces, Interfaces and Surface Analysis of MaterialsNo Access

HOT-CORROSION BEHAVIOR OF THERMAL BARRIER COATED DZ125 SUPERALLOY EXPOSED TO ATOMIZED SEAWATER AND KEROSENE

ZHIMING BAI

School of Material Science and Engineering, Beihang University, No. 37, Xueyuan Road, Beijing 100191, China

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LE ZHOU

School of Material Science and Engineering, Beihang University, No. 37, Xueyuan Road, Beijing 100191, China

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TIANQUAN LIANG

School of Material Science and Engineering, Beihang University, No. 37, Xueyuan Road, Beijing 100191, China

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HONGBO GUO

School of Material Science and Engineering, Beihang University, No. 37, Xueyuan Road, Beijing 100191, China

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, and

SHENGKAI GONG

School of Material Science and Engineering, Beihang University, No. 37, Xueyuan Road, Beijing 100191, China

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https://doi.org/10.1142/S0217979210066240Cited by:0 (Source: Crossref)

Abstract

The bare superalloy DZ 125 alloy, the aluminide coated specimens and electron beam physical vapor deposited (EB-PVD) thermal barrier coating (TBC) consisting of yttria stabilizied zirconia (YSZ) topcoat and NiCoCrAlY bond coat specimens were exposed to atomized seawater and kerosene at 900°C and the cyclic hot-corrosion behaviors of the specimens were investigated. Disastrous spallation of the bare superalloy occurred within 50 h hot-corrosion. In contrast to this, after 100 h hot-corrosion, the average mass change for the aluminized and TBC coated specimens is 0.7 mg/cm² and 0.63 mg/cm², respectively, exhibiting excellent hot-corrosion resistance.

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