발간논문

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Vol.36, No.12, 2167 ~ 2173, 1998
Title
Fabrication of TiB2 / Ti Surface - Alloyed Materials Using High - Energy Electron Beam Irradiation
오준철 , 어광준 , 이성학 , 구양모 , 김낙준 Jun Cheol Oh , Kwang Jun Euh , Sung Hak Lee , Yang Mo Koo , Nack J . Kim
Abstract
The present study is concerned with the fabrication and the microstructural analysis of a TiB₂/Ti surfacealloyed material fabricated by high-energy electron beam irradiation. The mixture of TiB₂ powders and flux was deposited on a Ti-10V-2Fe-3Al alloy substrate, and then electron beam was irradiated on these mixture using an electron beam accelerator. The melted region of about 1.5 ㎜ thickness was homogeneously formed without pores or cracks, and was composed of primary and eutectic TiB borides in the β phase matrix. The formation of these TiB borides greatly improved hardness, especially high-temperature hardness up to 450℃. These findings suggested that the surface-alloying method using high-energy electron beam irradiation was economical and useful to the development of new advanced materials with improved high-temperature properties.
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