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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2011.1
- 수록면
- 6 - 12 (7page)
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The selective surface oxidation of a transformation-induced-plasticity (TRIP) steel containing 1.6 wt.% Mn and 1.5 wt.% Si during annealing at 800 ℃ was investigated for its influence on the formation of an inhibition layer during hot-dip galvanizing. The selective oxidation of the alloying elements and the oxide morphology were significantly influenced by the annealing atmosphere. The pure _N2 atmosphere with a dew point -40 ℃ promoted the selective oxidation of Mn as a crystalline Mn_2SiO_4 phase, whereas the N_2 + 10% H2_ atmosphere with the same dew point -40 ℃ promoted the selective oxidation of Si as an amorphous Si-rich oxide phase. During hot-dip galvanizing, the Mn2SiO4 phase was reduced more readily by Al in the Zn bath than the Si-rich oxide phase. Consequently, the pure N_2 atmosphere resulted in a higher formation rate of Fe_2Al_5 particles at the Zn/steel interface and better galvanizability than the N_2 + 10% H_2 atmosphere.
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