Process dependant setting behavior of aqueous gelcast AlN slurries

摘要: Abstract In this study, AlN powder modified to improve anti-hydrolysis property with aluminum dihydrogen phosphate and phosphoric acid by mechanical milling was applied prepare M-AlN gelcasting slurry. The effect of various parameters such as concentration monomer crosslinker, amount initiator, solid content temperature on the idle time discussed for low-toxic N,N-dimethylacrylamide N,N′-methylenbisacrylamide (DMAA MBAM) system. results suggested that slurries decreased increasing volume fraction M-AlN. calculated activation energy 52.5 vol.% 29.46 kJ/mol. green body optimum bulk density maximum flexural strength obtained when APS 1.2 wt.% (on monomers base), polymerization 65 °C, 60 min constant DMAA MBAM (10 wt.%, 1 wt.% in premix solution, respectively) sintered ceramic is greater than 3.27 g/cm 3 , which presents relative value 99.3% theoretical.