High-throughput characterization of early hot-corrosion behaviors of compositional gradient Al–Cr complex coatings on a novel Co–Al–W alloy prepared by multi-arc ion plating technology at 1000–1100 °C for 10–30 min was conducted for the first time. As deposited, the coatings showed a laminate microstructure composed of various Al–Cr compounds. After corrosion, a three-layer structure formed between the coating and the substrate, with an outermost layer composed of α-Al₂O₃ + α-Cr₂O₃, an inter-diffusion layer, and an innermost reaction layer containing B₂-CoAl + μ-Co₇(W_0.8Cr_0.2)₆. Finally, the early hot-corrosion mechanism of the gradient Al–Cr complex coatings was discussed.

通过多弧离子镀技术制备的新型 Co-Al-W 合金上的成分梯度 Al-Cr 复合涂层的早期热腐蚀行为的高通量表征在 1000-1100 °C 下进行 10-30 分钟第一次。沉积时，涂层显示出由各种 Al-Cr 化合物组成的层压微观结构。腐蚀后，涂层与基体之间形成三层结构，最外层为α-Al ₂ O ₃ + α-Cr ₂ O ₃，相互扩散层，最内层为含B _{2 的}反应层-CoAl + μ-Co ₇ (W _0.8 Cr _0.2 ) ₆. 最后，讨论了梯度Al-Cr复合涂层的早期热腐蚀机理。