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以气-液传质理论为基础,采用高温电炉、定氧方法、化学分析、扫描电镜(SEM)等检验分析手段,研究无氧铜在无覆盖、固体氧化铝膜、硼砂-冰晶石、硼砂-炭黑保护条件下,金属铸样含氧第二相形貌、分布规律,氧化介质对铜液体系的传质规律。研究结果表明:无氧铜铸样晶内无第二相颗粒,无覆盖、氧化膜保护铸样中有大量的Cu+Cu_2O共晶,硼砂+冰晶石保护铸样存在网状Cu+Cu_2O共晶,硼砂+炭黑保护铸样由Cu、Cu+Cu_2O共晶组成。氧化膜增厚、破裂和Na~+传质是铜液吸氧的根本原因。
Based on the theory of gas-liquid mass transfer, using high-temperature electric furnace, oxygen determination method, chemical analysis, scanning electron microscopy (SEM) and other means of analysis to study the oxygen-free copper in non-covered, solid alumina film, borax - cryolite, borax The morphology and distribution of the second phase containing oxygen in the metal casting sample under the protection of carbon black and the mass transfer laws of the oxidizing medium to the copper liquid system. The results show that there is no second-phase particles and no coating in the sample of oxygen-free copper, and there are a lot of Cu + Cu_2O eutectic in the sample for the protection of oxide film. The mesh-like Cu + Cu_2O eutectic , Borax + carbon black protection cast by Cu, Cu + Cu_2O eutectic composition. Oxide film thickening, rupture and Na ~ + mass transfer copper is the fundamental reason for oxygen.