Investigation on Al-Cr2O3-Al2O3 Sliding Gate Performance

Jun Jie Zhang; Yong Li; Jin Bao Li; Yuan Gao; Gong Dong Ma

doi:10.4028/www.scientific.net/AMR.466-467.242

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 466-467Investigation on Al-Cr2O3-Al2O3 Sliding Gate...

Investigation on Al-Cr₂O₃-Al₂O₃ Sliding Gate Performance

Abstract:

High performance Al-Cr₂O₃-Al₂O₃ sliding gate are made from tabular corundum, white fused corundum, aluminum powder, and chromium oxide powder. Phenolic resin is used as binder. The properties of the Al-Cr₂O₃-Al₂O₃ sliding gates with the different content of chromium oxide(mass percent 3%,6%,9%,12%,15%) which are made from different processes (dried at 200°C in air, fired at 1300°Cin N₂ and fired at 1450°C in CO), are researched respectively. The results show that in different processes, the samples which contain 6% chromium oxide powder have higher cold crushing strength and hot modulus of rupture. After fired in N2, the new phases Al₈Cr₅ (1327°C), AlN are formed, and after fired in CO, Al₈Cr₅, Al₂OC and Cr₃C₂ are formed. These materials are contributed to improve the mechanical properties of samples. The samples fired in N₂ have the best performance.

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Periodical:

Advanced Materials Research (Volumes 466-467)

Pages:

242-245

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.466-467.242

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Online since:

February 2012

Authors:

Jun Jie Zhang, Yong Li, Jin Bao Li, Yuan Gao, Gong Dong Ma

Keywords:

Al Powder, Al-Cr₂O₃-Al₂O₃, Cr₂O₃ Powder, Sliding Gate

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