Ductile Iron Coatings to Prevent Abnormal Microstructure Caused by Sulfonic Acid Resin
When the rare earth magnesium ball iron stock was produced by toluene sulfonic acid(TSA) as an catalyst,experimental results show that abnormal microstructures usually appeared in the casting surfaces,and the impact value was reduced obviously.The defects of the abnormal microstructures on the casting surfaces can be effectively prevented using reactive or shield coatings.