• CSCD中国科学引文数据库来源期刊
  • 中文核心期刊
  • 中国机械工程学会材料分会会刊
  • 中国科技核心期刊
高级检索

热处理对Al2O3陶瓷断裂韧性的影响及其工艺优化

李学钊, 沈景凤, 顾青青, 谢建林, 王恩元, 胡婉琼

李学钊, 沈景凤, 顾青青, 谢建林, 王恩元, 胡婉琼. 热处理对Al2O3陶瓷断裂韧性的影响及其工艺优化[J]. 机械工程材料, 2016, 40(6): 93-97. DOI: 10.11973/jxgccl201606020
引用本文: 李学钊, 沈景凤, 顾青青, 谢建林, 王恩元, 胡婉琼. 热处理对Al2O3陶瓷断裂韧性的影响及其工艺优化[J]. 机械工程材料, 2016, 40(6): 93-97. DOI: 10.11973/jxgccl201606020
LI Xue-zhao, SHEN Jing-feng, GU Qing-qing, XIE Jian-lin, WANG En-yuan, HU Wan-qiong. Effect of Heat Treatment on Fracture Toughness of Alumina Ceramics and Its Process Optimization[J]. Materials and Mechanical Engineering, 2016, 40(6): 93-97. DOI: 10.11973/jxgccl201606020
Citation: LI Xue-zhao, SHEN Jing-feng, GU Qing-qing, XIE Jian-lin, WANG En-yuan, HU Wan-qiong. Effect of Heat Treatment on Fracture Toughness of Alumina Ceramics and Its Process Optimization[J]. Materials and Mechanical Engineering, 2016, 40(6): 93-97. DOI: 10.11973/jxgccl201606020

热处理对Al2O3陶瓷断裂韧性的影响及其工艺优化

详细信息
    作者简介:

    李学钊(1991-), 男, 河南濮阳人, 硕士研究生。

  • 中图分类号: TQ133.1

Effect of Heat Treatment on Fracture Toughness of Alumina Ceramics and Its Process Optimization

  • 摘要: 通过响应面法研究了升温速率、热处理温度和保温时间对Al2O3陶瓷断裂韧性的影响并确定了最佳热处理工艺, 分析了最佳工艺热处理后该陶瓷的性能和显微结构。结果表明:随着热处理温度的升高和保温时间的延长, Al2O3陶瓷断裂韧度先升后降, 各因素对断裂韧度的影响由大到小依次为热处理温度、保温时间、升温速率; 温度和保温时间的交互作用对断裂韧度的影响最大, 其次为升温速率和温度交互作用的, 升温速率和保温时间交互作用的影响最小; 最佳热处理参数为升温速率4 ℃·min-1、温度1 150 ℃、保温时间230 min, 在该条件下热处理后Al2O3陶瓷的断裂韧度由未热处理的3.25 MPa·m1/2提高到5.1 MPa·m1/2, 晶粒尺寸均匀、晶间缺陷及气孔数量减少。
    Abstract: The influences of the heating rate, heat treatment temperature and holding time on the fracture toughness and microstructures of Al2O3 ceramics were studied by the response surface method and the optimum heat treatment process was determined. The properties and microstructure of the ceramic after heat treatment with the optimum process were analyzed. The results show that with the increase of the heat treatment temperature and holding time, the fracture toughness of Al2O3 ceramics first increased then decreased. The factors, in order of effect significance, were ranked as follows: heat treatment temperature, holding time and heating rate. The effect of interaction between temperature and holding time on the fracture toughness was the biggest, followed by the interaction between heating rate and temperature and that between heating rate and holding time had the smallest influence. The optimum heat treatment parameters were found as follows: heating rate of 4 ℃·min-1, temperature of 1 150 ℃ and holding time of 230 min. After heat treated under this condition, the fracture toughness of the Al2O3 ceramic improved from 3.25 MPa·m1/2 before heat treatment to 5.1 MPa·m1/2. The grain sizes were uniform and internal defects and pore amounts were decreased.
  • [1] 李世普.特种陶瓷工艺学[M].武汉:武汉理工大学出版社,2012:79-83.
    [2] 穆柏春.陶瓷材料的强韧化[M].北京:冶金工业出版社, 2002:219-231.
    [3] 杨柳, 李建保, 杨晓战, 等.热处理对稀土掺杂氮化硅陶瓷性能的影响[J].稀有金属, 2004, 28(4):609-612.
    [4] 李国星, 陈昌平, 李玮, 等.陶瓷材料断裂韧性测试方法[J].河南建材, 2003(9):15-17.
    [5] 李大梅, 尤显卿, 许育东,等.氧化铝基陶瓷材料断裂韧性的测量与评价[J].硬质合金, 2004,21(4):231-236.
    [6] 姚钟尧, 林惠音, 梁士慧,等.回归分析法在橡胶配方试验中的应用[J].橡胶工业, 2001,48(7):453-457.
    [7] 付鹏, 刘卫东, 吴细桂,等.氧化铝陶瓷生产工艺中的质量控制[J].佛山陶瓷, 2005,15(5):24-27.
计量
  • 文章访问数:  7
  • HTML全文浏览量:  0
  • PDF下载量:  0
  • 被引次数: 0
出版历程
  • 收稿日期:  2016-05-12
  • 刊出日期:  2016-06-19

目录

    /

    返回文章
    返回