Al{sub}20{sub}3-Al{sub}2Cu{sub}3 Coating Produced by SHS Reactive Spraying;Analysis of the rust produced on WC thermally sprayed coating in Na{sub} 2SO {sub}4 aqueous solution; Characterization of HVOF (high velocity oxy-fuel)process using particle image velocimetry (PIV);Composite sliding bearing and its manufacturing technology ;Corrosion behavior of thermally sprayed WC coating in Na{sub}2SO{sub}4 aqueous solution