Corrosion Mechanism of Commercial MgO-C Refractories in Contact with Different Gas Atmospheres
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概要
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Corrosion of MgO–C refractories in different gas atmospheres consisting of air, Ar, CO or Ar/CO was studied in laboratory experiments. In total, 103 experiments were carried out in the temperature range 1173 to 1773 K and for holding times between 2 to 120 min. The reaction rate of the MgO–C material was determined from measurements of the weight loss of the samples. The results showed that the refractory weight loss increased with an increased temperature or an increased holding time. The thermodynamic conditions and the experimental results showed that magnesium gas and carbon monoxide gas should form during ladle refining of steel when the refractory material consists of MgO–C. It was suggested that the reaction rate is directly dependent on the oxygen potential in the ambient atmosphere.
- 社団法人 日本鉄鋼協会の論文
- 2008-06-15
著者
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Jönsson Pär
Division of Applied Process Metallurgy, Royal Institute of Technology
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Jonsson Par
Division Of Applied Process Metallurgy Department Of Materials Science And Engineering Royal Institu
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Brabie Voicu
Dalarna University
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JANSSON Sune
Arvika Gjuteri AB
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Jonsson Par
Division Of Applied Process Metallurgy Royal Institute Of Technology
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Brabie Voicu
Dalarna Univ.
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