Science and Technology of Energetic Materials
Online ISSN : 2434-6322
Print ISSN : 1347-9466
ISSN-L : 0368-5977
Preparation of ceramic-intermetallics-metal three layered clad by novel hot explosive welding
Ryuichi Tomoshige Kensaku TakakiYoshihisa MaedaShouta MomokitaKazushi Kai
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2021 Volume 82 Issue 5 Pages 123-127

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Abstract
We have developed a novel welding technique for joining ceramic materials and metals. The technique composes of combustion synthesis, which is an exothermic reaction with very high temperature, and explosive welding. Layered powder bed consisting of raw material powders for TiC-Al2O3 ceramic composite and TiNi intermetallics was combustion-synthesized on a copper plate by using the metal heating coil. After that, the explosive was detonated immediately for welding under elevated temperature associated with the combustion synthesis. Consequently, a threelayered clad was obtained with cohesive interface between the dissimilar materials. Hardness value in the ceramics layer increased with the amounts of explosives. The rapid quenching tests using the strip specimen showed no exfoliation at the interfaces of the samples. It is suggested that TiNi with pseudo elastic effect was effective to relax the thermal stress caused between the dissimilar materials.
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© 2021 Japan Explosives Society

この記事はクリエイティブ・コモンズ [表示 4.0 国際]ライセンスの下に提供されています。
https://creativecommons.org/licenses/by/4.0/deed.ja
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