J. Mater. Sci. Technol. ›› 2009, Vol. 25 ›› Issue (05): 703-707.

• Articles • 上一篇    下一篇

Taguchi方法优化LBO晶体化学机械抛光参数Optimization of Polishing Parameters with Taguchi Method for LBO Crystal in CMP

李军1;朱永伟1;左敦稳1;朱镛2;陈创天2   

  1. 1. 南京航空航天大学
    2. 中科院理化技术所
  • 收稿日期:2008-05-28 修回日期:2009-03-06 出版日期:2009-09-28 发布日期:2009-10-10
  • 通讯作者: 李军

Optimization of Polishing Parameters with Taguchi Method for LBO Crystal in CMP

Jun Li, Yongwei Zhu, Dunwen Zuo, Yong Zhu, Chuangtian Chen   

  1. 1) Jiangsu Key Laboratory of Precision and Micro-manufacturing Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
    2) Beijing Center for Crystal Research & Development, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100080, China
  • Received:2008-05-28 Revised:2009-03-06 Online:2009-09-28 Published:2009-10-10
  • Contact: LI Jun
  • Supported by:

    the National Natural Science Foundation of China (No. 50675104 and 50905086)
    Six High Talent Fund of Jiangsu Province (No. 06-D-024) 
    Talent Fund of NUAA (No. S0782-052)

关键词: Lithium triborate (LBO) crysta;Material removal rate (MRR);Surface roughness;Taguchi method

Abstract:

Chemical mechanical polishing (CMP) was used to polish Lithium triborate (LiB3O5 or LBO) crystal. Taguchi method was applied for optimization of the polishing parameters. Material removal rate (MRR) and surface roughness are considered as criteria for the optimization. The polishing pressure, the abrasive concentration
and the table velocity are important parameters which in°uence MRR and surface roughness in CMP of LBO crystal. Experiment results indicate that for MRR the polishing pressure is the most significant polishing parameter followed by table velocity; while for the surface roughness, the abrasive concentration is the most important one. For high MRR in CMP of LBO crystal the optimal conditions are: pressure 620 g/cm2, concentration 5.0 wt pct, and velocity 60 r/min, respectively. For the best surface roughness the optimal conditions are: pressure 416 g/cm2, concentration 5.0 wt pct, and velocity 40 r/min, respectively. The contributions of individual parameters for MRR and surface roughness were obtained.

Key words: Chemical mechanical polishing (CMP), Lithium triborate (LBO) crystal, Material removal rate (MRR), Surface roughness, Taguchi method