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환원확산법(還元擴散法)에 의한 TiFe 수소 흡장합금의 제조에 관한 기초적 연구
권호영,주전아수,소천수 한국산업안전학회 1993 한국안전학회지 Vol.8 No.2
For comparison, we used Ca and Mg as reducers to produce TiFe hydrogen stroage alloy from Fe and TiO₂by the Reduction-Diffusion process. The results obtained were as follow : ① Ca was found to be effective both for reduction and diffusion processes. Moreover, Ca oxide was easily removed in an NH₄Cl solution after the reaction. ② In the case of using Ca as a reducer, the Reduction-Diffusion process is considered to take place in the folling three steps: First. TiO₂is reduced to Ti by Ca over 1000℃. Second, the atomic Ti drifts in the Ca melt and meets Fe particles. Finally, the atomic Ti diffuses in to the Fe particles. ③ In the case of using Mg as a reducer, We found that the reduction reaction of TiO₂went well. But the reduced Ti scarcely diffused into Fe particles. This was probably because no Mg melt was formed due to the high vapor pressure of Mg.