由于高超音速车辆的不断增长的需求，在大型结构上生产高性能散热涂料引起了极大的关注。Al 2 O 3，Cr 2 O 3，Fe 2 O 3和MnO 2的混合物在不同温度下进行烧结，并将在1323和1523 K下烧结获得的复合材料用作磷酸铝铬基散热涂料的填料。通过扫描电子显微镜，X射线光电子能谱和X射线衍射研究了填料和涂层的微观结构和组成。涂层的光谱发射率和循环氧化进行到973K。结果表明，由于Mn 1.5 Cr 1.5 O 4的影响，用1323 K烧结的填料制备的磷酸铝铬涂层在3-8μm的波段内显示出最大的光谱发射率。相。在1523 K下进一步烧结填料会降低磷酸铝铬涂层的发射率。分析了烧结填料对发射率的影响。此外，研究了973 K下200 h循环氧化后的磷酸铝铬涂层的抗氧化性能，相结构和形貌，表明用复合氧化物填料制备的磷酸铝铬涂层可以提高陶瓷的抗氧化性能。钛合金。

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The production of high-performance heat-dissipating coatings on large structures has attracted significant attention owing to the ever-rising requirements of hypersonic vehicles. Mixtures of Al2O3, Cr2O3, Fe2O3, and MnO2 were sintered at various temperatures, and the composites obtained by sintering at 1323 and 1523 K were used as fillers for aluminum‑chromium phosphate based heat-dissipating coatings. The microstructures and compositions of the fillers and coatings were investigated by scanning electron microscopy, X-ray photoelectron spectroscopy and X-ray diffraction. Spectral emissivity and cyclic oxidation were performed up to 973 K for the coatings. The results showed that the aluminum‑chromium phosphate coating prepared with the filler sintered at 1323 K displayed the maximum spectral emissivity in the waveband 3–8 μm owing to the Mn1.5Cr1.5O4 phase. Further sintering the filler at 1523 K decreased the emissivity of the aluminum‑chromium phosphate coatings. The effects of the sintered fillers on emissivity were analyzed. In addition, the oxidation resistances, phase structures and morphologies of the aluminum‑chromium phosphate coatings after cyclic oxidation at 973 K for 200 h were studied, indicating that the aluminum‑chromium phosphate coatings prepared with the composite oxide fillers could improve the oxidation resistance of Ti alloys.