Statistical evaluation of corrosion of sialon in burner rig simulated combustion atmospheres

摘要

Samples of a sialon with low levels of aluminium substitution were exposed, for times up to 500 h, to a combustion atmosphere simulated in a low-velocity burner rig at 1300 deg.C Corrosion was evaluated by metallographic measurement of multiple polished sections. It was found that the extent of corrosion varied systematically along the length of each sample, which has been explained as being the result of creep of the corrosion scale towards the base of the sample.