R. I. トレーサーによる苦土橄欖岩電融体の粉砕物焼結体の耐蝕性の研究 : 苦土橄欖岩電融体の組織と性質に関する基礎的研究(第6報)

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Radioisotope techniques were used for the study of the corrosion resistance of the four kinds of sintered dunite refractory materials.The crushed powder of electrically fused dunite (see Table 1) were mixed with or without dolomite, limestone, or magnesia clinker (see Table 2 and 4), shaped into a crucible-like form by pressing, sintered at SK 27-32. The steel-making lime slag added with a small amount of R. I. 45Ca in the form of 45Ca(NO3)2 was melted in the crucible at 1610°C for about 1 hr. The penetration of 45Ca into the inner fine structure of the crucible was examined by autoradiography.The results obtained were as follows:1) Autoradiography has given an informative picture of the actual penetration of the slag into the fine structure of refractories, with good resolution, which is unobtainable with an ordinary microscope.2) The penetration of 45Ca has been found to be fairly slight for the refractory material added with magnesia clinker, while extremely deep for those added with lime stone or dolomite, compared with for the material consisting of only fused dunite.
社団法人日本セラミックス協会の論文
1961-06-01