The present invention provides sliding members respectively having sliding surfaces opposed to each other for creating dynamic pressure in a fluid, in which the sliding surfaces are formed of ceramics containing crystal grains of Al.sub.2O.sub.3, crystal grains of TiC contained in the crystal grains of Al.sub.2O.sub.3, and crystal grains of TiC existing independently of the crystal grains of Al.sub.2O.sub.3, and having a TiC content of 5 to 20 mass % in the total amount of Al.sub.2O.sub.3 and TiC, and the respective volume resistivity values R.sub.1 and R.sub.2 of the ceramics forming the sliding surfaces are within a range simultaneously satisfying equations (1) to (3) to prevent spark discharges from being induced between the sliding surfaces, and a fluid dynamic pressure bearing and a motor to which the configuration is applied: 10.sup.6 .OMEGA.cm

 
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