Mechanical properties of hexagonal boron nitride synthesized from film of Cu/BN mixture by surface segregation |
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| Institution: | 1. The Institute of Science and Technology of Sungkyunkwan University, Suwon 440-746, South Korea;2. National Research Institute for Metals, Tsukuba 305-0047, Japan;1. CNEN/CRCN-NE, Av. Prof. Luiz Freire, 1, Recife CEP 50740-540, Brazil;2. UFPE/DEN, Av. Prof. Luiz Freire, 1000, Recife CEP 50740-540, Brazil;3. UFPE/DF, Av. Prof. Luiz Freire, s/n, Recife CEP 50670-901, Brazil;1. Department of Nuclear Engineering, Ben Gurion University of the Negev, Beer-Sheva, Israel;2. NRC-Negev, PO Box 9001, Beer-Sheva 84190, Israel;3. Advanced Coatings Center at Rotem Industries Ltd., Mishor Yamin, D.N. Arava 86800, Israel;1. Division of Materials Science and Engineering, Hanyang University, Seoul 04763, Republic of Korea;2. Department of Applied Chemistry, Kyung Hee University, Yongin-Si 17104, Republic of Korea;1. Unité de Recherche Matériaux et Energies Renouvelables URMER, Université de Tlemcen, 13000 Tlemcen – Algérie;2. Laboratoire de Microscopie, Microanalyse de la matière et Spectroscopie Moléculaire, Faculté des Sciences, Université de Sidi Bel Abbès, 22000 Sidi Bel Abbès – Algérie;3. Université d’Artois, Faculté Jean Perrin, rue Jean Souvraz- S.P.18- 62307 Lens Cedex, France;1. Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Suwon 16419, Republic of Korea;2. Department of Energy Science, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea;1. Department of Chemistry, Indiana University, 800 E. Kirkwood Ave., Bloomington, IN 47405, USA;2. Center for Exploration of Energy and Matter, Indiana University, 2401 Milo B. Sampson Ln., Bloomington, IN 47408, USA;3. Department of Physics, Indiana University, 727 E. 3rd St., Bloomington, IN 47405, USA |
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| Abstract: | Hexagonal boron nitride (h-BN) has a low friction coefficient and weak surface attractive force similar to graphite. Furthermore, while graphite is conductive, BN is a good insulator. These properties make it suitable for application like lubricating coating or as an insulator/buffer layer in electronic devices. The synthesize of h-BN layer by surface segregation phenomena and mechanical properties of the h-BN surface segregated on Cu substrate have been investigated. During in situ annealing, the surface segregation of BN occurred on Cu/BN film deposited by deposition process with a rf magnetron co-sputtering system. Auger electron spectroscopy (AES) and X-ray photoelectron spectroscopy (XPS) analysis showed that though the h-BN layer synthesized was not covered whole area of substrate but the h-BN layers partially covered substrate. And the concentration of oxygen on the surface after exposure in air is decreased with increase of BN concentration. The topography of atomic forces microscopy (AFM) showed that h-BN phases surface segregated are discontinuous droplet shape. The force curves of AFM and friction force of lateral force microscopy (LFM) showed that the h-BN droplet surface segregated have very weak attractive force and low friction coefficient equal to h-BN sintered plate. |
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