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首页> 外文会议>Unified International Technical Conference on Refractories;Biennial Worldwide Congress on Refractories >AN INVESTIGATION ON THE CORROSION RESSISTANCE OF THE CALCIUM MAGNESIUM ALUMINATE CEMENT BONDED ALUMINA-SPINEL REFRACTORY CASTABLES
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AN INVESTIGATION ON THE CORROSION RESSISTANCE OF THE CALCIUM MAGNESIUM ALUMINATE CEMENT BONDED ALUMINA-SPINEL REFRACTORY CASTABLES

机译：铝铝酸钙水泥粘结氧化铝 - 尖晶石耐火件耐腐蚀性研究

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Four types of Al_2O_3-spinel castables (total spinel containing 20%) with alternative binders CMA or CA and with or without microsilica (0 or 1%) were prepared. In order to evaluate the influence of the microstructure evolution on the corrosion behavior, the static crucible test considering a basic slag (CaO/SiO_2=2.0 wt%) as a reactant via SEM/EDS analysis and the thermo-chemical simulation via FactSage? software were carried out respectively. The corrosion results revealed that the CMA bonded castables firing at 1600°C before slag attack induced a fine texture in the matrix, which played an important role in improving corrosion resistance. The addition of microsilica will affect the morphology and the location of the generated CA6, which further affected the corrosion resistance. For the castable without microsilica, CA6 layer was found at the border of the aggregates, protected aggregates from slag attack, while with microsilica, CA6 was mainly formed in the matrix, resulted in the aggregates unprotected and dissolved rapidly. The phase evolution of corroded samples was in tune with the simulation analysis.
机译：制备四种类型的Al_2O_3 - 尖晶石浇口（含有替代粘合剂CMA或Ca和含有或没有微粘膜（0或1％）的含有替代粘合剂的四种类型的Al_2O_3-尖晶石浇口石（总尖晶石）。为了评估微观结构演化对腐蚀行为的影响，通过SEM / EDS分析的基本渣（CaO / SiO_2 = 2.0wt％）作为反应物的静态坩埚试验通过SEM / EDS分析和通过事实进行热化学模拟？软件分别进行。腐蚀结果表明，在渣攻击之前在1600℃下烧制的CMA键合肉体在基质中诱导细纹，这在提高耐腐蚀性方面发挥了重要作用。添加微米的添加将影响生成的CA6的形态和位置，这进一步影响了耐腐蚀性。对于没有微链子的浇注料，在聚集体的边界处发现Ca6层，来自渣攻击的受保护的聚集体，同时用微基团，Ca6主要形成在基质中，导致聚集体无保护并迅速溶解。通过模拟分析，腐蚀样品的相位演化是曲调的。

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