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在含ＳＯ２成分、添加石英砂细粉的８００°Ｃ烟气中，对７种耐高温材料进行了热态磨蚀腐蚀试验。用称重和测厚法测量了试件的失重和减厚量，采用金相显微镜和扫描电镜（ＳＥＭ）对试验后的试样表面和侧面进行形貌和组织观察，用Ｘ射线扩展能谱（ＥＤＡＸ）进行腐蚀层的元素分析，并用显微硬度计测量基体、涂层等的显微硬度。试验结果表明，在本试验的参数条件下，试验表面的破坏是以石英砂的高温冲蚀磨损为主，ＳＯ２气氛的热腐蚀作用不明显。Ａｌ２Ｏ３陶瓷的高温耐冲蚀腐蚀性能最好。在几种耐高温合金材料中，Ｆｅ３Ａｌ基合金的磨损量最小。试验结果为循环流化床惯性分离器和底饲回燃喷嘴等元件的合理选材提供了宝贵的依据。图７表５参９
In the SO2 composition, adding quartz sand fines 800 ° C flue gas, seven kinds of high temperature materials were hot abrasion corrosion test. The weight loss and thickness reduction of the test piece were measured by weighing and thickness measurement. The surface and side of the test piece were observed by metallographic microscope and scanning electron microscope (SEM), and the energy spectrum was expanded by X-ray (EDAX) elemental analysis of the corrosion layer, and the use of microhardness tester matrix, coating and other microhardness. The test results show that under the condition of the parameters of the test, the destruction of the test surface is mainly caused by erosion and wear of quartz sand at high temperature, and the thermal corrosion of SO2 atmosphere is not obvious. Al2O3 ceramic erosion resistance of the best high temperature corrosion. In several high-temperature alloy materials, Fe3Al-based alloy wear the least. The test results provide a valuable basis for the rational selection of components such as circulating fluidized bed inertial separator and bottom feed back burner nozzle. Figure 7 Table 5 参 9