Properties and corrosion behaviour of corundum-spinel castables with different spinel formation methods: Role of in-situ spinel

被引:0
|
作者
Zhuo, Qin [1 ,2 ]
Han, Bingqiang [1 ,2 ]
Wei, Jiawei [3 ]
Miao, Zheng [4 ]
Zhong, Hutang [1 ,2 ]
机构
[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Peoples R China
[2] Minist Educ, Joint Int Res Lab Refractories & Met, Wuhan, Peoples R China
[3] Luoyang Inst Sci & Technol, Sch Mat Sci & Engn, Luoyang 471023, Peoples R China
[4] Hebei Guoliang New Mat CO LTD, Tangshan 063022, Peoples R China
关键词
Corundum-spinel castables; In-situ spinel; Thermodynamics; Corrosion resistance; HIGH-ALUMINA; MICROSTRUCTURAL EVOLUTION; REFRACTORY CASTABLES; ELASTIC PROPERTIES; TEMPERATURE; RESISTANCE; MAGNESIA; AL2O3-MGO; SLAG; OPTIMIZATION;
D O I
10.1016/j.ceramint.2024.12.140
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
In order to investigate the effects of in-situ spinel on the mechanical properties and corrosion behaviors of corundum-spinel castables, tabular corundum, magnesia fine powders and pre-synthesized spinel fine powders were used as raw materials to prepare corundum-spinel castables. The results showed that corundum-spinel castables with 3 wt% of magnesia fine powders and pre-synthesized spinel exhibited the best physical properties, thermal shock stability and corrosion resistance. The cold modulus of rupture was 28.6 MPa and cold compressive strength was 141.7 MPa. The residual strength ratio after thermal shock was 55.87 %. For the corrosion behaviors, the corrosion index and penetration index were 8 % and 11.86 %, respectively. Due to the better ceramic bonding interface by the in-situ spinel and the weaker volume expansion effect by the presynthesized spinel, densification of the samples could be significantly improved, which could enhance the properties of the samples. Besides, according to the thermodynamic calculation, spinel and corundum underwent obvious phase transition during the corrosion process. The ability of the samples with 3 wt% magnesia fine powders and pre-synthesized spinel to maintain the primary crystalline phases was relatively stable when reacting with slag, which made the castables show preferable slag penetration resistance.
引用
收藏
页码:7060 / 7068
页数:9
相关论文
共 50 条
  • [21] Preparation and properties of lightweight corundum-spinel refractory with density gradient
    Yin, HongFeng
    Xin, Yalou
    Dang, JuanLing
    Gao, Kui
    Tang, Yun
    Yuan, HuDie
    CERAMICS INTERNATIONAL, 2018, 44 (16) : 20478 - 20483
  • [22] Effects of Alumina Bubble Addition on the Properties of Corundum-Spinel Castables Containing Cr2O3
    Chen, Haonan
    Shi, Xingfu
    Chen, Jing
    Sang, Mengyang
    Ma, Haoxuan
    Liu, Xinhong
    Jia, Quanli
    MATERIALS, 2024, 17 (13)
  • [23] Degradation behaviors of cement-free corundum-spinel castables in Ruhrstahl Heraeus refining ladle: Role of infiltrated steel
    Cheng, Yaping
    Zhang, Yu
    Li, Yuanyuan
    Chen, Junfeng
    Xiao, Junli
    Wei, Yaowu
    Liu, Guangping
    Li, Guangqiang
    Zhang, Shaowei
    Li, Nan
    CERAMICS INTERNATIONAL, 2021, 47 (22) : 32008 - 32014
  • [24] Effect of carbon sources on the properties of lightweight corundum-spinel refractory with density gradient
    Wan, Qifa
    Yin, Hongfeng
    Tang, Yun
    Yuan, Hudie
    Ren, Xiaohu
    Xin, Yalou
    Liu, Yuchi
    INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY, 2020, 17 (02) : 598 - 605
  • [25] Spinel Castables for Steel Ladle Lining:In-Situ Versus Preformed
    Andreas BUHR
    Marion SCHNABEL
    Reinhard EXENBERGER
    Christian RAMPITSCH
    Jerry DUTTON
    China'sRefractories, 2012, 21 (03) : 7 - 15
  • [26] Properties and microstructures of porous corundum-spinel aggregates fabricated via the Kirkendall effect
    He, Yang
    Mi, Zhuo
    Chen, Qingjie
    Peng, Die
    Zhang, Shilong
    Li, Nan
    INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY, 2024, 21 (03) : 1978 - 1993
  • [27] Optimized microstructure with nano-alumina and its effects on properties of corundum spinel castables
    Zhu, Hui
    Li, Xiangcheng
    Chen, Pingan
    Zhu, Boquan
    INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY, 2019, 16 (06) : 2362 - 2372
  • [28] Enhanced thermal shock resistance of corundum-spinel castables by dip-coating of platelet-like lanthanum hexa-aluminate on corundum aggregates
    Feng, Yuan
    Ding, Donghai
    Xiao, Guoqing
    Jin, Endong
    Hou, Xing
    Jia, Xuan
    JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2025, 45 (07)
  • [29] Processing and microstructure characterization of porous corundum-spinel ceramics prepared by in situ decomposition pore-forming technique
    Li, Shujing
    Li, Nan
    Li, Yawei
    CERAMICS INTERNATIONAL, 2008, 34 (05) : 1241 - 1246
  • [30] In-situ spinel bond formation (expansion/contraction) during firing
    Hwang, KH
    Oh, KD
    Bradt, RC
    UNIFIED INTERNATIONAL TECHNICAL CONFERENCE ON REFRACTORIES (UNITECR 97), VOL 1 - 3: 5TH BIENNIAL WORLDWIDE CONGRESS - REFRACTORIES, A WORLDWIDE TECHNOLOGY, 1997, : 1575 - 1580