Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

您目前所在的位置:首页 - 期刊简介 - 详细页面

中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第27卷    第5期    总第218期    2017年5月

[PDF全文下载]    [Flash在线阅读]    

    

文章编号:1004-0609(2017)-05-0947-06
BaZrO3耐火材料在富钛熔体中的侵蚀机理
陈光耀1,李宝同1,张 浩1,高鹏越1,秦子威1,鲁雄刚1, 2,李重河1, 2

(1. 上海大学 材料科学与工程学院 上海市钢铁冶金新技术开发应用重点实验室,上海 200072;
2. 上海特种铸造工程技术研究中心,上海 201605
)

摘 要: 使用BaZrO3坩锅结合真空感应加热技术熔炼钛含量66%(摩尔分数)的富钛合金,通过宏观显微镜、X射线衍射仪、扫描电子显微镜及电子耦合仪分析BaZrO3坩锅与熔体接触后的显微组织及其组成元素(Ba,Zr和O)在合金中的熔解量;研究BaZrO3坩锅剥落损毁及与钛熔体界面反应机理。结果显示:BaZrO3坩锅受熔体侵蚀层厚度约2000 μm,合金中锆和氧含量随着熔体与坩埚接触时间增加而增加。界面反应产物BaO与空气中水分和CO2反应生成BaCO3,晶体体积变化破坏晶粒间结合力,导致坩埚剥落损毁。富钛熔体对BaZrO3耐火材料的溶解侵蚀是坩埚受损的主要原因。

 

关键词: BaZrO3耐火材料;富钛合金;侵蚀;界面反应

Corrosion mechanism of BaZrO3 refractory in titanium enrichment melt
CHEN Guang-yao1, LI Bao-tong1, ZHANG Hao1, GAO Peng-yue1, QIN Zi-wei1, LU Xiong-gang1, 2, LI Chong-he1, 2

1. State Key Laboratory of Advanced Special Steel, Shanghai Key Laboratory of Advanced Ferrometallurgy, School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China;
2. Shanghai Special Casting Engineering Technology Research Center, Shanghai 201605, China

Abstract:The titanium enrichment (66%, mole fraction) alloy was melted in the BaZrO3 crucible to investigate the crucible damage and erosion mechanism. By the optical microscopy, scanning electron microscopy, X-ray diffractometry and atomic emission spectrometry, the microstructure and the dissolution of BaZrO3 refractory after contacting the melt with different time were studied. The results show that the thickness of erosion layer of the BaZrO3 crucible is measured as about 2000 μm. The Zr and O elements contents in the alloys increase with rising the contacting time. The damage of BaZrO3 crucible is caused by the changing of crystal volume, as the BaO transforms into BaCO3. The main mechanism responsible for the erosion of BaZrO3 crucible is the dissolution of BaZrO3 refractory in the titanium enrichment melt.

 

Key words: BaZrO3; refractory; enrichment titanium alloys; erosion; interfacial reaction

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

主管:中国科学技术协会 主办:中国有色金属学会 承办:中南大学
湘ICP备09001153号 版权所有:《中国有色金属学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市岳麓山中南大学内 邮编:410083
电 话:0731-88876765,88877197,88830410   传真:0731-88877197   电子邮箱:f_ysxb@163.com