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研究了Inconel 601合金在普通硼硅酸盐核废物玻璃(MW)和添加ZnO、Mn_2O_3改性的硼硅酸盐玻璃(MZMF)的1060℃高温熔体中浸泡168 h和336 h的腐蚀行为,利用扫描电子显微镜和能谱仪、X射线衍射分析仪,研究了合金与玻璃的腐蚀界面的表面形貌、元素组成以及相结构变化。结果表明:合金表面生成了Cr_2O_3层,其中合金在MW中的腐蚀深度比在MZMF中大10μm;在MW熔体中,MgO、Fe_2O_3和Cr_2O_3反应生成MgCr_2O_4和FeCr_2O_4,破坏了合金和玻璃之间的Cr_2O_3层,使该层呈碎片状。在MZMF高温熔体中长期浸泡后,合金表面形成的Cr_2O_3层呈连续均匀的状态,并且Cr_2O_3层外附着一层含B、O、Fe、Mn、Zn的锯齿状化合物,阻碍了Cr_2O_3层与MgO或其他化学物质反应,减缓了合金的腐蚀速率。
The corrosion behavior of Inconel 601 alloy immersed for 168 h and 336 h in 1060 ℃ high temperature melt of ordinary borosilicate nuclear waste glass (MW) and borosilicate glass (MZMF) doped with ZnO and Mn_2O_3 was studied. The surface morphology, elemental composition and phase structure of the interface between alloy and glass were studied by scanning electron microscopy, energy dispersive spectrometer and X-ray diffraction analyzer. The results show that the Cr 2 O 3 layer is formed on the surface of the alloy, and the corrosion depth of the alloy in MW is 10 μm larger than that in MZMF. In MW melt, MgO, Fe 2 O 3 and Cr 2 O 3 react to form MgCr 2 O 4 and FeCr 2 O 4, Cr 2 O 3 layer, so that the layer was fragmented. After soaking in MZMF high temperature melt for a long time, Cr_2O_3 formed on the surface of the alloy was continuous and uniform, and a serrated compound containing B, O, Fe, Mn and Zn adhered to the Cr_2O_3 layer, hindering the Cr_2O_3 and MgO Or other chemical reaction, slow down the corrosion rate of the alloy.