Ternary nanocomposites based on carbon fiber (CF)/polyoxymethylene (POM) composites and further reinforced 
with  different amounts of  α -phase alumina  (Al2O3) nanoparticles were fabricated. The results show  that the 
incorporation  of  Al2O3  nanoparticles  simultaneously  enhances  mechanical  strength,  thermal  stability  and 
seawater  resistance,  and  optimal  properties  were  obtained  at  4.0%  Al2O3  nanoparticle  loading.  Remarkable 
enhancement of tribological properties in seawater at ordinary pressure was attained, while elevated seawater 
pressure  weakened  the  wear  resistance  of  Al2O3/CF/POM  composites.  At  ordinary  seawater  pressure,  the 
tribological  properties  of  Al2O3/CF/POM composites  were  revealed  to  be governed  by the  transfer  behavior 
between  polymer-metal  interface.  At  elevated  seawater  pressures,  however,  the  transfer  of  Al2O3/CF/POM 
composites prevents the metallic counterpart from corrosion-wear damage at the expense of increased wear loss