6Beake B.D,Zheng S,Alexander M.R.Nano-indentation testing of plasma-polymerised hexane films[J].Journal of Materials Science,2002.(37):3821-3826.
7Soul D M. Lubricant additives--their application, perform- ance and limitations [ J ]. Industrial Tribology, 1983 ( 8 ) : 242 - 266.
8Qiao Y L, Liu W M, Xue Q J, et al. The tribochemistry mechanism of borate modified by N-containing compound as oil additive [J]. Wear, 1998, 215(1): 165 - 169.
9Zheng Z, Shen G, Wan Y, et al. Synthesis, hydrolytic sta- bility and tribological properties of novel borate esters contai-ning nitrogen as lubricant additives [J]. Wear, 1998, 222 (2) : 135 - 144.