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Co-Al-layered double-metal hydroxides were synthesized by a co-precipitation method with carbonate or dodecylsulfate or borate. The samples were characterized by Fourier Transform infrared spectroscopy(FTIR), X-ray diffraction(XRD), thermo gravimetric analysis-differential scanning calorimetry(TG-DSC), scanning electron microscopy(SEM), respectively. Their frictional features were evaluated in a four-ball friction tester, gear tester and air compressor. The results show that three LDHs products have the similar hexagonal platelet morphology and the same cell parameter a0 of 0.31 nm, as well as different c0, gallery height and interlayer anions. The use of LDHs powder as a lubricant can reduce friction coefficient, wear of frication pairs, temperature of lubrication oil and power consumption of driving motor. They could be one of the innovative lubrication and anti-frictional materials for the potential applications. The anionic species are an important feature promising LDHs friction performance, the order of contribution could be carbonate > dodecylsulfate > borate.
Co-Al-layered double-metal hydroxides were synthesized by a co-precipitation method with carbonate or dodecylsulfate or borate. The samples were characterized by Fourier Transform infrared spectroscopy (FTIR), X-ray diffraction scanning calorimetry (TG-DSC), scanning electron microscopy (SEM), respectively. Their frictional features were evaluated in a four-ball friction tester, gear tester and air compressor. The results show that three LDH products have the similar hexagonal platelet morphology and the same cell parameter a0 of 0.31 nm, as well as different c0, gallery height and interlayer anions. The use of LDHs powder as a lubricant can reduce friction coefficient, wear of frication pairs, temperature of lubrication oil and power consumption of driving motor. They could be one of the innovative lubrication and anti-frictional materials for the potential applications. The anionic species are an important feature promising LDHs friction p erformance, the order of contribution could be carbonate> dodecylsulfate> borate.