Synthesis and characterization of Co–Al–CO3 layered double-metal hydroxides and assessment of their friction performances
Source abstract
Abstract
Abstract In this paper, Co–Al–CO 3 layered double-metal hydroxides (CAC-LDHs) were prepared by co-precipitation method and characterized by XRD, FT-IR, TG-DSC, SEM. In addition, their frictional features were evaluated by four-ball friction tester, gear tester and air compressor. The results showed that optimized synthetic conditions of CAC-LDHs were water–ethanol solution media with Co/Al mol ratio of 3:1, crystallization temperature of 120 °C and crystallization time of 5 h. The LDHs have perfect crystals with hexagonal lamella structures. Most crystallites have disk diameter of 150 – 200 nm and thickness of 20 nm. The d -spcing and gallery height of CAC-LDHs were 0.77nm and 0.29nm, respectively. Total specific surface area of the sample is 97 m 2 /g and pore volume is 0.14 cm 3 /g. As a lubricant, CAC-LDHs can significantly reduce friction coefficient (49.1%) and wear of friction pairs. They can also reduce temperature of lubrication oil (7.4–7.7%) and energy consumption of driving motor (4.8–7.0%). Accordingly, CAC-LDHs may broadly be used as lubrication and anti-frictional materials.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Layered Double Hydroxides Synthesis and Applications · Supercapacitor Materials and Fabrication · Thermal Expansion and Ionic Conductivity
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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