2． Choudhury N.S., Graham H.C. and Hinzw J.W., Properties of High Temperature Alloys with Emphasis on Environmental Effects, Electrochemical Society, Inc., 1976;668．
[3]
3． Wright I.G., Wood.R.A and Seitzer M.S., Environmental Protection of Titanium Alloys at High Temperature(Battelle Columbus Lab., NASA Report CR 134681, July 1984) .
