B<SUB>4</SUB>CとBaOを含む熱浴による鉄鋼の炭ほう化処理

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  • Boro-Carburizing of Iron and Steel Immersed in a Hot Bath Containing B<SUB>4</SUB>C and BaO
  • B4CとBaOを含む熱浴による鉄鋼の炭ほう化処理
  • B4C ト BaO オ フクム ネツヨク ニヨル テッコウ ノ スミホウカ シ

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A boro-carburizing method using a hot bath consisting of B4C, BaO and alkali halides (KCl, NaCl) has been studied. The results obtained are summarized as follows.<BR>(1) The following reactions seem to take place in the bath.<BR>(This article is not displayable. Please see full text pdf.) <BR>The impregnation of iron and steel with boron and carbon seems to be accelerated by MO.<BR>(2) In a hot bath consisting of B4C and alkali halides, the simultaneous impregnation of iron and steel with boron and carbon was not remarkable. However, the impregnation increased significantly by the addition of BaO to the bath. The thickest, about 0.28 mm, boronized layer was obtained by treating in a hot bath of 24%B4C, 16%BaO, 30%KCl, and 30%NaCl at 1000°C for 5 hr. The layer consists of FeB and Fe2B.

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