Analysis of Chemical Action of Oxidants in Chemical Mechanical Polishing of SiC Crystal Substrate

Article Preview

Abstract:

Chemical mechanical polishing (CMP) had been considered as the most practical and effective method of achieving an ultra-smooth and non-damage surface in manufacturing SiC crystal substrate. CMP slurry was one of the key factors of CMP technology. In this paper, through investigating the changes of several core factors to evaluate the performance of CMP, such as the material removal rate (MRR), surface roughness Ra, 3D surface profiler, etc., the influence of various slurry and its content on the polishing efficiency and surface finish quality had been studied. The research results showed that different oxidant had different chemical action mechanism, also affecting the stability of CMP slurry and surface quality of specimen; adding suitable an oxidant to slurry could effectively improve the CMP performance.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

213-216

Citation:

Online since:

October 2014

Export:

Price:

* - Corresponding Author

[1] R.H. Liu, Development of SiO2 ILD chemical mechanical polishing slurry and its performance analysis, Dalian University of Technology, Dalian, (2009).

Google Scholar

[2] K. Wang, R.K. Kang, J. Wang, Influence of abrasive and chemical composition on chemo-mechanical polishing of MgO single crystal substrate, Diamond & Abrasives Engineering, 2012, Vol. 174, No. 6 (2009) 20-23.

Google Scholar

[3] V.D. Heydemann W.J. Everson, Rick D. Gamble, et al., Chemi-Mechanical Polishing of On-Axis Semi-insulating SiC Substrates[J]. Materials Science Forum, 2004, Vols. 457-460: 805-808.

DOI: 10.4028/www.scientific.net/msf.457-460.805

Google Scholar

[4] J.X. Su, Z.Q. Zhang, J. G. Yao, et al., Study on chemical mechanical polishing parameters of 6H-SiC crystal substrate based on diamond abrasive, Advanced Material Research, Vol. 797(2013) 261-265.

DOI: 10.4028/www.scientific.net/amr.797.261

Google Scholar