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JOURNAL OF SYNTHETIC CRYSTALS ›› 2023, Vol. 52 ›› Issue (12): 2210-2214.

• Research Articles • Previous Articles     Next Articles

Transparent Armor Based on Sapphire Crystal Plate: an “Optical Shield” for Future Warfare

WANG Xiaoliang1,2, ZHAO Peng1,2, LIU Fafu3, HUANG Youqi4, LI Qinglian5, SUN Jun5,6, HUANG Cunxin1,2   

  1. 1. Beijing Sinoma Sythentic Crystal Co., Ltd., Beijing 100018, China;
    2. Sinoma Sythentic Crystal Co., Ltd., Beijing 100018, China;
    3. Ningbo Branch of China Ordnance Research Institute, Ningbo 315103, China;
    4. China Building Materials Academy Co. Ltd., Beijing 100024, China;
    5. School of Physics, Nankai University, Tianjin 300071, China;
    6. Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Science, Urumqi 830011, China
  • Received:2023-10-07 Online:2023-12-15 Published:2023-12-26

Abstract: The sapphire single crystal plate with size of 485 mm×985 mm×12 mm was successfully prepared by a large-size edge-defined film-fed growth (EFG) furnace designed and developed independently. After cutting and grounding, the crystal was formed into transparent armors composited with glass and polycarbonate. The surface density with the size of 352 mm×351 mm×33 mm is 79.27 kg/m2, and the surface density of the other is 79.38 kg/m2 with the size of 351 mm×342 mm×33 mm. Targeting tests were conducted on the transparent armors using incendiary shells with diameters of 7.62 mm and 12.7 mm, respectively. The experimental results show that the transparent armor based on sapphire crystal plate has excellent impact resistance during firing at a normal angle of 0° and with a distance of 100 m which from target to the armors.

Key words: sapphire single crystal, edge-defined film-fed growth method, transparent armor, surface density, targeting experiment

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