Mechanism of Al3CON Formed in situ Reaction in the Corundum Composites

摘要：

　　Mechanism of Al3CON formed in situ reaction in the corundum composites has been believed as follows:7Al+3Al3C4+12AlN+4Al2O3=12Al3CON.The mechanism of Al3CON formed in situ reaction has also been verified and proved by the XRD and SEM in specimen 1# of the corundum composites.The mechanism of Al3CON formed in situ reaction can be used to explain that the traditional carbon containing refractories will form Al4C3 and will not form Al3CON at 1500℃×3h buried in coke.Crushing strength of the specimen 1# added with suitable additive A after fired at 1500℃×3 h reaches to 225 MPa.the creep rate is positive all the time from 0%to 0.014%at 1500℃ for 2h.It is concluded that the active Al3CON and Al2O3 multiphases that were formed by Al,Al3C4,AlN and Al2O3 inside the matrix of the composites during in-situ reaction,which gives the composites outstanding creep rate resistance for the dense zone resulting from Al3CON oxidation that inhibits contraction at the high temperature.

关键词： mechanism Al3CON in situ reaction corundum composites creep rate

作者: YANG Yifan JIANG Mingxue YANG Dingao YUAN Shouqian ZHAO Wei GAO Song YANG Mengyao

作者单位: Xian University of Architecture and Technology,Xian 710055,China Xian University of Architecture and Technology,Xian 710055,China;Beijing Lier High-Temperature Mat Beijing Lier High-Temperature Materials Co.,Ltd.,Beijing 102211,China;Luoyang Lier Refractories Co., Luoyang Lier Refractories Co.,Ltd.,Luoyang 471023,China Zhicheng College of Fuzhou University,Fuzhou 350002,China

会议类型: 国际会议

会议名称: Conference on Refractories International 2018, CRI2018)(2018国际耐火材料学术会议)

会议地点: 杭州

会议语种:英文

页码: 1-5

在线出版日期: 2018-10-17（万方平台首次上网日期，不代表论文的发表时间）