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Normal spectral emissivity, specific heat capacity, and thermal conductivity of type 316 austenitic stainless steel containing up to 10 mass% B$$_{4}$$C in a liquid state

B$$_{4}$$Cを10%まで添加させた316系オーステナイトステンレス鋼の液体状態での垂直分光放射率,比熱,熱伝導率

福山 博之*; 東 英生*; 山野 秀将   

Fukuyama, Hiroyuki*; Higashi, Hideo*; Yamano, Hidemasa

炭化ホウ素(B$$_{4}$$C)含有316系オーステナイトステンレス鋼(SS)の垂直分光放射率,比熱,熱伝導率を、SS-$$x$$ mass%B$$_{4}$$C (10%まで)の組成範囲と幅広温度範囲で、静磁場電磁浮遊法により実験的に測定した。SS-B$$_{4}$$Cメルトについては、垂直分光放射率,比熱は温度に対してほぼ一定、熱伝導率は正の温度依存性は無視できるほど小さい。1800Kでの各物性値のB$$_{4}$$C含有依存性は、SS-B$$_{4}$$疑似二元系では共晶組成(3mass%B$$_{4}$$C程度)をまたがると異なる傾向を示した。

The normal spectral emissivity, specific heat capacity and thermal conductivity of type 316 austenitic stainless steel (SS) containing boron carbide (B$$_{4}$$C) in a liquid state were experimentally measured over the composition range of SS-$$x$$ mass% B$$_{4}$$C (up to 10%) and wide temperature ranges using an electromagnetic levitator in a static magnetic field. The normal spectral emissivity and specific heat capacity were almost constant against temperature for all SS-B$$_{4}$$C melts, and the thermal conductivities of the melts had a negligible or small positive temperature dependence. The B$$_{4}$$C-content dependence of each property at 1800 K had a different tendency across the eutectic composition (around 3 mass% B$$_{4}$$C) of the SS-B$$_{4}$$C pseudo-binary system.

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パーセンタイル:80.29

分野:Materials Science, Multidisciplinary

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