。364· 北京科技大学学报 2006年第4期 ics via gelcasting of aqeous particulate slurries.Bull Mater [6 Omatete0 0,Janrey M A,Nunn S D.Gelcasting:fmm lab Sci2002,25(6:565 oratory development toward industry production.J Eur Ceram [4]Studart A R.Pandolfell V C,Tevoont E.et al.Geling of a S0c,1997,17(2-3):407 lumina suspensions using alginic acid salt and bydoxyaluminum 【7王盘鑫.粉末治金学.北京：治金工业出版社1996：247 diacetate.J Am Ceram Soc,2002.85(11):2711 【网马莒生。精密合金及粉末治金材料.北京：机械工业出版 [5]Tari G.Gelcasting ceramics:a review.Am Ceram Bull. 社，1980：199 2003,82(4):43 Gelcasting technique of iron-carbon powder LIU Weihua,JIA Chengchang,SHI Yantao Materials Science and Engineering School.University of Science and Techmology Beijing Beijing 100083.Chim ABSTRACT Gelcasting was applied to the preparation of high carbon steel products with 1%carbon in mass fraction.The iron-carbon suspension with 89%solid loading was prepared in gelcasting and a lot of parts with complex shapes were produced with this suspension.The effect of sintering atmosphere on the carbon content of products was investigated.It is show n that sintering in vacuum can control the carbon content.The products with uniform structure,a relative density of 91%,flexural strength of 400M Pa, and tensile strength of 410MPa can be prepared after sintering at 1200 Cunder dissociated ammonia. KEY WORDS gelcasting;high carbon steel;sintering atmospheres;mechanical properties;shapeics via gelcasting of aqueous particulate slurries.Bull Mater Sci, 2002, 25( 6) :565 [ 4] S tudart A R, Pandolfelli V C, Tevoort E, et al.Gelling of a￾lumina suspensions using algini c acid salt and hyd roxyaluminum diacet ate .J Am Ceram Soc, 2002, 85( 11) :2711 [ 5] Tari G .Gelcasting ceramics:a review .Am Ceram Bull, 2003, 82( 4) :43 [ 6] Omat et e O O, Janney M A, Nunn S D .Gelcasting :from lab￾orat ory development toward industry production.JEur Ceram Soc, 1997, 17( 2-3) :407 [ 7] 王盘鑫.粉末冶金学.北京:冶金工业出版社, 1996:247 [ 8] 马莒生.精密合金及粉末冶金材料.北京:机械工业出版 社, 1980:199 Gelcasting technique of iron-carbon powder LIU Weihua, JIA Chengchang , SHI Yantao Materials S cience and Engineering S chool, University of Science and Technology Beijing, Beijing 100083, C hina ABSTRACT Gelcasting was applied to the preparation of hig h carbon steel products with 1 %carbon in mass fraction .The iron-carbon suspension with 89 %solid loading w as prepared in gelcasting and a lot of parts w ith complex shapes w ere produced with this suspension .The effect of sintering atmosphere on the carbon content of products w as investigated .It is show n that sintering in vacuum can control the carbon content .The products w ith unifo rm structure, a relative density of 91 %, flex ural strength of 400 M Pa, and tensile strength of 410 MPa can be prepared after sintering at 1 200 ℃under dissociated ammonia . KEY WORDS gelcasting ;high carbon steel ;sintering atmospheres ;mechanical properties ;shape · 364 · 北 京 科 技 大 学 学 报 2006 年第 4 期