The two Ti-Al-Zr targets and one pure Cr target were used to prepare the TiAlZrCr/(Ti, Al, Zr, Cr)N gradient films on high speed steel (W18Cr4V) substrates by multi-arc ion plating technique. Short-term isothermal (at 600℃, 700℃, 800℃ and 900℃ for 4h) and long-term cyclic (at 700℃ and 800℃ for 100h) high temperature oxidation behavior of the gradient films were studied. Then the oxide scales formed on the film specimens were characterized by scanning electron microscopy (SEM), energy dispersion X-ray spectroscopy (EDS) and X-ray diffraction (XRD). It was showed that, under short-term isothermal condition, the high temperature oxidation resistance of the gradient film was excellent up to 800℃ and an oxide scale comprising TiO2 was observed. On the other hand, under long-term cyclic high temperature condition, the oxidation resistance of the gradient film was excellent at about 700℃.
DIAO Shi-Lu
,
LIU Chang-Sheng
,
ZHANG Jun
. Oxidation behavior of TiAlZrCr/(Ti,Al, Zr, Cr)N gradient films deposited by multi-arc ion plating[J]. Acta Metallurgica Sinica (English Letters), 2010
, 23(6)
: 473
-480
.
DOI: 10.11890/1006-7191-106-473
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