Al-Si 融体を用いた Mo 上への Mo(Si, Al)_2 のディップ・コーティング

概要

論文の詳細を見る
The formation of intermetallic compound of Mo(Si, Al)_2 on molybdenum for a protective coating of high temperature oxidation was examined by dip-coating technique using Al-Si liquid which was saturated with Si at the temperature range from 1000K to 1200K. The composition of Mo(Si, Al)_2 phase is fixed at Mo(Si_<0.85>, Al_<0.15>)_2. The growth kinetics is governed by the interface reaction between Mo and Mo(Si, Al)_2. The other intermetallic compound is not observed, whose formation is expected from the phase diagram of the Mo-Si-Al system. The Mo(Si, Al)_2 formed on Mo is dense and has an excellent adherence to Mo. The layer of Mo(Si, Al)_2 on Mo-wire cracks perpendicular to Mo-Mo(Si, Al)_2 interface, and forms radially. Mo(Si, Al)_2 forms in layer structure on Mo-plate. The activation energy of formation of Mo(Si, Al)_2 is 180 kJmol^<-1>.
社団法人日本鉄鋼協会の論文
1994-02-01