3Gradt T, Borner H, Schneider T. Low Temperature Tribo- meters and the Behaviour of ADLC Coatings in Cryogenic Environment[J ]. Tfibology International,2001,34:225-230.
4Koshizuka N, Ishikawa F, Nasu H, et al. Present Status of R&D on Superconducting Magnetic Bearing Technologies for Flywheel Energy Storage System[J]. Physica C, 2002, 378-381 (Part 1): 11-17.
5Wang J S, Wang S Y, Zeng Y W, et al. The First Man- loading High Temperature Superconducting Maglev Test Vehicle in the World[J]. Physica C, 2002, 378-381(Part 1): 809-814.
6Day A C, Strasik M. Design and Testing of the HTS Beating for a 10 kWh Flywheel System[J]. Superconductor Science and Technology, 2002, 15: 838-841.
7Werfel F N, Floegel-Delor U, Riedel T, et al. Progress toward 500 kg HTS Bearings [J ]. IEEE Transactions on App- lied Superconductivity, 2003, 13(2): 2173-2178.
8Waher H, Bock J, Frohne C, et al. First Heavy Load Bearing for Industrial Application with Shaft Loads up to 10 kN [J]. Journal of Physics: Conference Series, 2006, 43:995 - 998.
9F N Werfel , U Floegel - Delor, T Riedel, et al. Flywheel Challenge: HTS Magnetic Bearing[J]. Journal of Physics: Conf- erence Series, 2006, 43:1007 - 1010.
10Fang J R, Lin L Z, Yan L G, et al. A New Flywheel Energy Storage System Using Hybrid Superconducting Magnetic Bearings[J]. IEEE Transactions on Applied Superconductivity, 2003, 13(1): 1657-1660.