The effect of Al₂O₃ on non-Newtonian property and structure of mold fluxes was examined with a rotating cylinder method combined with Raman and magic-angle spinning nuclear magnetic resonance technology. Oswald-De Wael'e power-law model was used to quantify the shear-thinning behavior. The results indicated that a shear-thinning behavior formed and first improved and then decreased with increasing Al₂O₃. The sample with 9.5% Al₂O₃ revealed the strongest shear-thinning behavior, and its flow behavior index reached a minimum of 0.76. Raman result illustrated the Si-O-Al linkages first became prominent with adding Al₂O₃, and then depressed with raising shear stresses. ²⁷Al MAS-NMR analysis suggested that AlO₄ increased with adding Al₂O₃. However, AlO₄ reduced, AlO₃F and AlO₅ increased with increasing shear stresses. ²⁹Si MAS-NMR analysis indicated that with increasing shear stress, Q³(1Al) and Q²(1Al) in AlO₄ species decreased, and the reduction of Q³(1Al) was larger than that of Q²(1Al), Q²(0Al), Q¹, and Q⁰ units increased.

结合拉曼和魔角旋转核磁共振技术，通过旋转圆柱法研究了Al ₂ O ₃对非牛顿性能和保护渣结构的影响。Oswald-De Wael'e幂律模型用于量化剪切稀化行为。结果表明，随着Al ₂ O _3的增加，剪切变稀行为形成并先改善，然后减少。Al ₂ O ₃含量为9.5％的样品表现出最强的剪切稀化行为，其流动行为指数最低为0.76。拉曼结果表明，通过添加Al ₂ O ₃，Si-O-Al键首先变得突出，然后随着剪切应力的升高而降低。²⁷ Al MAS-NMR分析表明，AlO ₄随着Al ₂ O _3的添加而增加。然而，随着剪切应力的增加，AlO ₄还原，AlO ₃ F和AlO ₅增加。²⁹ Si MAS-NMR分析表明，随着剪切应力的增加，AlO ₄物种中的Q ³（1Al）和Q ²（1Al）降低，并且Q ³（1Al）的还原量大于Q ²（1Al）， Q ²（0Al），Q ¹和Q ⁰单位增加。