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Journal of Inorganic Materials

Journal of Inorganic Materials

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Preparation and Application of Large Size CVD Diamond Thick Films

WANG Bing1; RAN Jun-Guo1; MEI Jun2; LI Li2; JI Xi-Lin2   

  1. 1.; Department of Inorganic Materials; Sichuan University; Chengdu 610063; China; 2. Southwest Institute of Structure Mechanics; Mianyang; Sichuan 621900; China
  • Received:2001-04-23 Revised:2001-07-25 Published:2002-03-20 Online:2002-03-20

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Abstract: Diamond thick films with 120mm in diameter, up to 1mm thickness were prepared by the electron-assistant chemical vapor deposition (EACVD) method. SEM, Raman
spectroscopy characterization and hardness test show that the films are pure polycrystalline diamond materials with hardness approaching to that of natural
diamond (ND) and much higher than that of polycrystalline diamond (PCD). Field tests demonstrate that the drawing effect of CVD diamond wire dies is nearly equal
to those obtained from ND and high quality PCD wire dies. This kind of CVD diamond wire die can be widely used in drawing W, Mo, Cu and stainless steel filaments.

Key words: CVD diamond thick film, electron assistant, wire die

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