1. 2) M.Nakazawa : Boundary, No. 11 (1990), 36.
2. 3) Y.Furunushi, S.Watahiki, A.Inose and Cfujinaga : CAMP-ISIJ, 12 (1999), 253.
3. 5) K.Igaki : Bull. Iron Steel Inst. Jpn., 1 (1996), 343.
4. 6) K.Hauff : Oxidation of Metals, Plenum Press, New York, (1965), 274.
5. 7) M.H.Davies, M.T.Simnad and C.F.I3irchnall : J. Metals, 3 (1951). 889.