硅酸盐学报2013，Vol.41Issue(3)：416-421,6.DOI:10.7521/j.issn.0454-5648.2013.03.24
用塑性金属工艺制备Al-Al2O3复合无碳滑板
Preparation of Al-Al2O3 Composite Sliding Gate by Transient Plastic Phase Process
李勇 1张军杰 1李进宝 1薛文东 1陈俊红 1孙加林1
作者信息
摘要
Abstract
A high performance A1-A12O3 metal and oxide composite carbon-free sliding gate was prepared under carbon burial at 1450 ℃ for 6 h via a transient plastic phase process using tabular alumina, fused white corundum, Α-A12O3 fine powder and a fine Al powder as raw materials and phenolic resin as binder. The composite samples with Al content of 9% in mass had the optimum comprehensive physical properties. The apparent porosity, bulk density, cold crushing strength and hot bending strength of the samples heated at 1400 ℃ for 30min were 4.1%, 3.27 g/cm3, 410 MPa and 60.7 MPa, respectively. The performance of the composite sliding gate prepared via the control of chemical reaction and calcining atmosphere was superior. Al reacted with both C and CO mixed with N2 could form Al4C3 and AJN, and Al4C3 continuously reacted with Al2O3 to form Al4O4C, A12OC reinforcement phase and the remaining free Al as a metal plastic phase. The A1-A12O3 composite sliding gate had a high chemical stability and a low oxygen potentiality, without any free C and hydrated Al4C3, which could be applied to clean steel production process, and the secondary C, O, H and other impurities from the sliding gate could not appear during the operation.关键词
铝/氧化铝/复合材料/过渡塑性相工艺/金属塑性相/无碳滑板Key words
aluminium/ alumina/ composite/ transient plastic phase processing/ metal plastic phase/ carbon-free sliding gate分类
化学化工引用本文复制引用
李勇,张军杰,李进宝,薛文东,陈俊红,孙加林..用塑性金属工艺制备Al-Al2O3复合无碳滑板[J].硅酸盐学报,2013,41(3):416-421,6.
