Changqing Xia, Xiaomin Peng, and Jia Li, Behavior of NiCrAlY coating on the TC6 titanium alloy, J. Univ. Sci. Technol. Beijing, 15(2008), No. 2, pp. 167-172. https://doi.org/10.1016/S1005-8850(08)60032-8
Cite this article as:
Changqing Xia, Xiaomin Peng, and Jia Li, Behavior of NiCrAlY coating on the TC6 titanium alloy, J. Univ. Sci. Technol. Beijing, 15(2008), No. 2, pp. 167-172. https://doi.org/10.1016/S1005-8850(08)60032-8
Changqing Xia, Xiaomin Peng, and Jia Li, Behavior of NiCrAlY coating on the TC6 titanium alloy, J. Univ. Sci. Technol. Beijing, 15(2008), No. 2, pp. 167-172. https://doi.org/10.1016/S1005-8850(08)60032-8
Citation:
Changqing Xia, Xiaomin Peng, and Jia Li, Behavior of NiCrAlY coating on the TC6 titanium alloy, J. Univ. Sci. Technol. Beijing, 15(2008), No. 2, pp. 167-172. https://doi.org/10.1016/S1005-8850(08)60032-8
A NiCrAlY coating was deposited on the TC6 titanium substrate by arc ion plating (ALP). The structure and morphologies of the NiCrAlY coating were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM), and the influence of vacuum heat treatment on the element diffusion behavior was studied. The results showed that the γ'-Ni3Al phase was precipitated on the NiCrAlY coating after heat treatment. The Ni3(AI,Ti), TiNi, and Ti2Ni intermetallic layers appeared at the interface from the outside to the inside at 700℃, and the thickness of the intermetallic layers increased with the increase in temperature. At 700℃ Ti and Ni were the major diffusion elements, and the diffusion of Cr was observed when the heat treatment temperature increased up to 870℃. The violent inward diffusion of Ni at 950℃ resulted in the degradation of the NiCrAlY coating.
A NiCrAlY coating was deposited on the TC6 titanium substrate by arc ion plating (ALP). The structure and morphologies of the NiCrAlY coating were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM), and the influence of vacuum heat treatment on the element diffusion behavior was studied. The results showed that the γ'-Ni3Al phase was precipitated on the NiCrAlY coating after heat treatment. The Ni3(AI,Ti), TiNi, and Ti2Ni intermetallic layers appeared at the interface from the outside to the inside at 700℃, and the thickness of the intermetallic layers increased with the increase in temperature. At 700℃ Ti and Ni were the major diffusion elements, and the diffusion of Cr was observed when the heat treatment temperature increased up to 870℃. The violent inward diffusion of Ni at 950℃ resulted in the degradation of the NiCrAlY coating.
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