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制备铝电解用xCu/(10NiO-NiFe2O4)和1BaO-xCu/(10NiO-NiFe2O4)(x=5,10,17)金属陶瓷惰性阳极,在传统电解质中以电流密度1.0A/cm2进行实验室电解腐蚀实验。结果表明:金属Cu被腐蚀,在阳极表面留下了许多孔洞从而导致在电解过程中电解质向阳极内部渗透;金属陶瓷5Cu/(10NiO-NiFe2O4),10Cu/(10NiO-NiFe2O4),17Cu/(10NiO-NiFe2O4),1BaO-5Cu/(10NiO-NiFe2O4),1BaO-10Cu/(10NiO-NiFe2O4)和1BaO-17Cu/(10NiO-NiFe2O4)的腐蚀速率分别为2.15,6.50,8.30,4.88,4.70和4.48cm/a;添加剂BaO对10Cu/(10NiO-NiFe2O4)和17Cu/(10NiO-NiFe2O4)金属陶瓷的抗腐蚀性能是有利的,因为添加剂BaO能有效提高其致密度从而提高其抗腐蚀性能;但BaO对5Cu/(10NiO-NiFe2O4)金属陶瓷的抗腐蚀性能是不利的,可能是因为聚集在晶界的添加剂BaO加速了金属陶瓷的腐蚀。
Preparation of a Cermet Inert Anode for xCu / (10NiO-NiFe2O4) and 1BaO-xCu / (10NiO-NiFe2O4) (x = 5,10,17) for Aluminum Electrolysis Laboratory electrolysis was performed in a conventional electrolyte at a current density of 1.0 A / Corrosion experiment. The results show that the metal Cu is corroded and many holes are left on the anode surface, which leads to the electrolyte infiltrating into the anode during the electrolysis process. Cermet 5Cu / (10NiO-NiFe2O4), 10Cu / (10NiO-NiFe2O4), 17Cu / (10NiO The corrosion rates of 1BaO-5Cu / (10NiO-NiFe2O4), 1BaO-10Cu / (10NiO-NiFe2O4) and 1BaO- 17Cu / (10NiO- NiFe2O4) were 2.15, 6.50, 8.30, 4.88, 4.70 and 4.48 cm / a; The additive BaO is beneficial to the corrosion resistance of 10Cu / (10NiO-NiFe2O4) and 17Cu / (10NiO-NiFe2O4) cermets because BaO can effectively increase its density and improve its corrosion resistance; The corrosion resistance of 5Cu / (10NiO-NiFe2O4) cermets is unfavorable, probably because the BaO, which accumulates in the grain boundaries, accelerates the corrosion of the cermets.