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采用两步溶胶-凝胶方法对微米碳基铁粉进行了包覆和接枝的复合处理,以提高其在水性体系的抗氧化性能和稳定性。研究了复合处理对羰基铁粉的微州组织、晶体结构、磁学性能及其在水性体系中的抗氧化和抗沉降性能等的影响。研究表1明,制备的复合羰基铁粉颗粒表面具非晶态S1O_2膜层和采水性基团,其磁学性能基本不变。复合羰基铁粉在室温水性体系和高温空气中的抗氧化性能得到显著提高,其在水性体系中的抗沉降性能也得到一定程度的提高。复合处理可有效著改善羰基铁粉在水性体系中的稳定性,从而推动其应用。
The two-step sol-gel method was used to coat and graft the micron carbon-based iron powder in order to improve its oxidation resistance and stability in aqueous system. The microstructure, magnetic properties, anti-oxidation and anti-settling properties of carbonyl iron powder were studied. Study Table 1 shows that the prepared composite carbonyl iron powder surface amorphous SiO2 film and water-absorbing groups, the basic magnetic properties unchanged. The oxidation resistance of carbonyl carbonyl powder in aqueous system at room temperature and in high temperature air was significantly improved, and its anti-settling property in aqueous system was also improved to a certain extent. Complex treatment can effectively improve the carbonyl iron powder in aqueous system stability, thereby promoting its application.