• Title/Summary/Keyword: 베릴륨

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Beryllium Analysis on the Brazing Zone of Zircaloy-4 Cladding (Zircaloy-4 피복관 부레이징 계면의 베릴륨 분석)

  • Lee, Key-Soon;Lee, Byong-Whi
    • Nuclear Engineering and Technology
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    • v.21 no.4
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    • pp.341-345
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    • 1989
  • The distribution behaviors of beryllium which may produce a deleterious damage in the zircaloy cladding have been investigated by the X-ray line scanning of EPMA. The results obtained are as follows; 1) The alloy phase formed by the brazing contains ~6.3 mass % of beryllium. 2) The beryllium diffusion in the base metal (cladding and bearing pad) is recognized only in the range ~5 $\mu$m from the brazing interface.

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Shear Bond Strength and Interfacial Characterization of Ceramic to Beryllium Free Nonprecious Alloys for Porcelain Fused to Metal Crown (베릴륨이 포함되지 않은 도재용착용 비귀금속 합금과 세라믹간의 전단결합강도와 계면특성)

  • Chung, In-Sung;Kim, Chi-Young
    • The Journal of the Korea Contents Association
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    • v.10 no.11
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    • pp.228-234
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    • 2010
  • Ni-Cr and Co-Cr alloy uncontained Be element for using as dental porcelain alloy were analyzed the mechanical properties through bonding strength and fracture test after the bonding with porcelain. The bonding strengths between alloy and ceramic were measured through the shear bond strength test. Consequently, the T-3 group contained Be element that had shear strength of 41.13(${\pm}5.11$)MPa was showed the highest shear strength than the other groups. The second highest group was a verabond contained Be element that had shear strength of 40.72(${\pm}5.98$)MPa. The results of the other groups according to the shear strength were Wirobond(38.40(${\pm}9.66$)MPa) belonged to Co-Cr alloy, and Verabond 2V(32.77(${\pm}4.31$)MPa), Bellabond N(28.63(${\pm}6.39$)MPa), Bellabond plus(24.97(${\pm}6.13$)MPa), Argeloy N.P. Star(22.69(${\pm}3.41$)MPa) uncontained Be element, respectively. The morphological aspects of the fracture surface between alloys and ceramic were observed that all groups were caused mixed failure as conformation attached ceramic fragments to metallic surface by fracture process.

Fabrication of Blade type Tip using BeNi foil (베릴륨니켈 박판을 이용한 블레이드형 팁의 제작)

  • Lee, Keun-Woo;Lee, Jong-Ha;Lee, Tae-Sung;Lee, Byung-Wook;Kim, Chang-Kyo;Lee, Jae-Hong
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2007.06a
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    • pp.136-137
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    • 2007
  • LCD 패널의 전기전도에 대한 물량여부를 측정하기 위한 프르브 유니트의 핵심소자 중 하나인 블레이드 타입의 핀을 제작하는데 있어서 주 소재인 베릴륨니켈 박판의 식각 조건에 대하여 연구하였다. 사용된 베릴륨니켈 기판의 두께는 $20{\mu}m$이며, DFR을 이용하여 패터닝하였고 염화제이철 및 황산을 첨가한 용액을 이용하여 침전법으로 단면 식각을 실시하였다. 베릴륨니켈 박판은 2mol의 염화제이철에 1mol의 황산을 첨가한 용액으로 $40^{\circ}C$의 온도에서 식각하였을때 가장 빠른 식각을 보였으며, 그에 따라 식각된 면의 상태도 매우 깨끗하고 수직 가까운 식각면이 나타남을 알 수 있었다.

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