Skip to content
Licensed Unlicensed Requires Authentication Published by De Gruyter July 15, 2015

Parametric Study of Pulsed CO2 Laser Surface Treatment of Alumina Ceramics

  • A. Bharatish EMAIL logo , H. N. Narasimha Murthy , Ajithkumar Radder , V. Mamatha , B. Anand and B. S. Satyanarayana

Abstract

This paper focuses on investigating the influence of laser power, pulse frequency and scanning speed on material removal rate and surface roughness during CO2 laser surface treatment of alumina ceramics. Pulse frequency and laser power were the significant factors influencing the material removal rate and surface roughness, respectively. Adequate response surface models were established to correlate the laser parameters and the measured responses. Grey relational analysis predicted the optimal responses at 90 W laser power, 5 kHz pulse frequency and 400 mm/s scanning speed. Desirability function based Multi objective optimization results indicated that minimum material removal rate (0.5117 mm3/s) and surface roughness (0.5968 µm) are achieved at 90 W laser power, 5 kHz pulse frequency and 337.37 mm/s scanning speed which were in close agreement with Grey Relational results. Increase in homogeneity and smoothness of the laser treated alumina surface along with formation of micro recast particles away from the laser traverse path were evidenced by the SEM micrographs.

Funding statement: Funding: Financial support for the present research was provided by Vision Group on Science and Technology, Government of Karnataka under SMYSR-2012 scheme.

Acknowledgements

The authors express their gratitude to Dr. S. Ananth Raj for useful discussions and valuable suggestions.

References

1. SamantAN, DahotreNB. Computational predictions in single-dimensional laser machining of alumina. Int J Mach Tool Manuf2008;48:134553.10.1016/j.ijmachtools.2008.05.004Search in Google Scholar

2. RajeshP, MuraleedharanCV, KomathM, VarmaH.Laser surface modification of titanium substrate for pulsed laser deposition of highly adherent hydroxyapatite. J Mater Sci Mater Med2011; 22:16719.10.1007/s10856-011-4342-3Search in Google Scholar

3. TriantafyllidisD, LiL, StottFH.Surface treatment of alumina based ceramics using combined laser sources. Appl Surf Sci2002;186:1404.10.1016/S0169-4332(01)00639-0Search in Google Scholar

4. TriantafyllidisD, LiL, StottFH.Crack free densification of ceramics by laser surface treatment. Surf Coat Technol2006;201:316373.10.1016/j.surfcoat.2006.06.032Search in Google Scholar

5. ChwaSO, OhmoriA. The influence of surface roughness of sprayed zirconia coatings on laser treatment. Surf Coat Technol2001;148:8895.10.1016/S0257-8972(01)01325-1Search in Google Scholar

6. CostilS, LukatS, BertrandP, LangladeC, CoddetC.Surface treatment effects on ceramic matrix composites: case of a thermal sprayed alumina coating on SIC composites. Surf Coat Technol2010;205:104754.10.1016/j.surfcoat.2010.07.021Search in Google Scholar

7. AdraiderY, HodgsonSN, SharpMC, ZhangZY, NabhaniF, Al-WaidhA, et al. Structure characterization and mechanical properties of crystalline alumina coatings on stainless steel fabricated via sol–gel technology and fibre laser processing. J Am Ceram Soc2012;32:422940.10.1016/j.jeurceramsoc.2012.07.012Search in Google Scholar

8. CannilloV, SolaA, BarlettaM.Surface modification of al-Al2O3 composites by laser treatment. Opt Laser Eng2010;48:126677.10.1016/j.optlaseng.2010.06.004Search in Google Scholar

9. Kwak JT, ReddyR, SinhaS, BhargavaR.Analysis of variance in spectroscopic imaging data from human tissues. Anal Chem2012;84:10639.10.1021/ac2026496Search in Google Scholar PubMed PubMed Central

10. BharatishA, Narasimha MurthyHN, AnandB, MadhusoodanaCD, PraveenaGS, KrishnaM.Characterization of hole circularity and heat affected zone in pulsed CO2 laser drilling of alumina ceramics. Opt Laser Technol2013;53:2232.10.1016/j.optlastec.2013.04.010Search in Google Scholar

11. GoswamiA, KumarJ. Investigation of surface integrity. Material removal rate and wire wear ratio for WEDM of Nimonic 80A alloy using GRA and Taguchi method. doi:10.1016/j.jestch.2014.05.002.Search in Google Scholar

12. AqidaSN, BrabazonD, NaherS.An investigation of phase transformation and crystallinity in laser surface modified H13 steel. Appl Phys A2013;110:6738.10.1007/s00339-012-7149-2Search in Google Scholar

13. WeiX, XieXZ, HuW, HuangJF.Polishing sapphire substrates by 355 nm ultraviolet laser. Int J Opt 2012;2012. Article ID 238367, 7 pages. doi:10.1155/2012/238367.Search in Google Scholar

14. WangZK, ZhengHY. Investigation on CO2 laser irradiation inducing gas strip peeling for micro channel formation. Biomicrofluidics2012;6:012820012820-12. doi: 10.1063/1.3670362.Search in Google Scholar PubMed PubMed Central

15. YilbasBS, KaratasC, ArifAF, Abdul AleemBJ. Laser control melting of alumina surfaces and thermal stress analysis. Opt Laser Technol2011;43:85365.10.1016/j.optlastec.2010.10.009Search in Google Scholar

Received: 2014-8-9
Accepted: 2015-6-30
Published Online: 2015-7-15
Published in Print: 2015-9-15

©2015 by De Gruyter

Downloaded on 28.3.2024 from https://www.degruyter.com/document/doi/10.1515/jmsp-2014-0027/html
Scroll to top button