High Temperature Oxidation of Al-alloyed SiMo Cast Iron in CO2-containing Atmospheres
The SiMo cast iron with 5.45 wt% of Al has been developed for using as an automotive exhaust manifold.Cyclic oxidation test of that alloy and the conventional SiMo cast iron was conducted at 850 ℃ in 5%CO2+12%O2+83%N2 and 10%CO2+12%O2+78%N2.It was found that oxidation kinetics of the SiMo cast iron alloyed with 5.45 wt% of Al was lower than that of the SiMo cast iron.An X-ray diffraction technique and a scanning electron microscope equipped with energy dispersive spectroscopy were performed for characterisation.Thermal oxide scale on the SiMo cast iron consisted of hematite, magnetite and silica, while it was mainly alumina,additionally with hematite and magnetite, for the SiMo cast iron alloyed with 5.4 wt%.Formation of the alumina promoted oxidation resistance of the later cast alloy.
SiMo cast iron exhaust manifold oxidation carbon dioxide
Somrerk Chandra-ambhorn Tummaporn Thublaor Jiradech Pongpankasame
Department of Materials and Production Technology Engineering,Faculty of Engineering,King Mongkuts Department of Production Engineering,Faculty of Engineering,KMUTNB,Pracharat 1 Road,Wongsawang,Bangs
国际会议
香港
英文
132-135
2013-06-25（万方平台首次上网日期，不代表论文的发表时间）