View Full-text

pISSN : 1598-706X / eISSN : 2288-8381


한국주조공학회지 (40권6호 135-145)

A Study on the Oxidation Resistance of Aluminum Cast Iron by Aluminum Content

알루미늄 함량에 따른 알루미늄 주철의 내산화성에 관한 연구

Dong-Hyuk Kim†

Korea Institute of Industrial Technology



Aluminum cast iron has excellent oxidation resistance, sulfurization resistance, and corrosion resistance. However, the ductility at room temperature is insufficient, and at temperatures above 600?, the strength drops sharply and practicality is limited. In the case of heat-resistant cast iron, high-temperature materials containing Cr and Ni account for 30 to 50% or more. However, these high-temperature materials are expensive. Aluminum heat-resistant cast iron is considered as a substitute for expensive heat-resistant materials. Oxidation due to the aging temperature and holding time conditions increases more in 0 wt.% Al-cast iron than in 2 and 4 wt.% Al-cast iron according to oxidized weight and gravimetric oxide layer thickness measurements. As a result of observing the cross-section of the oxide layer, it was found to contain 0 wt.% of Al-cast iron silicon oxide-containing SiO2 or Fe2SiO4 oxide film. In cast iron containing aluminum, the thickness of the internal oxide layer due to aluminum increases as the aging temperature and retention time increase, and the amount of the iron oxide layer generated on the surface decreases.


Aluminum cast iron, Heat-resistant cast iron, Heat-resistant material, Oxidation resistance, Al2O3