Advertisement

Journal of Materials Science

, Volume 43, Issue 10, pp 3392–3399 | Cite as

Performance of sub-micron diamond films coated on mould inserts for plastic injection moulding

  • V. F. NetoEmail author
  • R. Vaz
  • N. Ali
  • M. S. A. Oliveira
  • J. Grácio
NanoSmat 2007 - International Conference on Surfaces, Coatings and Nanostructured Materials

Abstract

In this article, results obtained from an investigation focusing on the application of diamond coatings on inserts for thermoplastic injection moulding applications are reported. The injection moulding industry can potentially benefit significantly from the use of diamond coatings on moulds typically employed in the injection moulding systems. Diamond films were coated on steel and onto silicon inserts and subsequently tested in real operating conditions. The moulded objects were analysed and the results were compared between bare steel and silicon inserts. The as-grown diamond coatings were characterised prior to and post the routine injection cycles using a number of techniques, such as Raman spectroscopy and SEM. Furthermore, the polymer finishing quality was assessed by optical microscopy for each material and coating used, and the results are presented and discussed in this article.

Keywords

Residual Stress HDPE Diamond Film Injection Moulding Mould Insert 

Notes

Acknowledgments

V. F. Neto thanks the Universidade de Aveiro for the PhD funding support. The authors are grateful to FCT, Portugal, for funding the project: POCTI/EME/60816/2004. The authors would like to acknowledge Eng. Gil Costa, from F. Ramada (Ovar, Portugal), for supplying the Impax SupremeTM steel, Eng. Luis Godinho and Eng. Rui Pimenta, from Prirev (Vagos, Portugal), for producing the CrN interlayers and also Eng.a Tatiana Zhiltsova for the helpful collaboration operating the injection moulding machine.

References

  1. 1.
    Friedrich K, Lu Z, Hager AM (1995) Wear 190:139CrossRefGoogle Scholar
  2. 2.
    Shaharuddin SIS, Salit MS, Zainudin ES (2006) Turkish J Eng Env Sci 30:23Google Scholar
  3. 3.
    Jonathan N, Umar K, Werner JB, Yurii KG (2006) Carbon 44:1624CrossRefGoogle Scholar
  4. 4.
    May PW (2000) Phil Trans R Soc Lond A 358:473CrossRefGoogle Scholar
  5. 5.
    Neto VF, Shokuhfar T, Oliveira MSA, Grácio J, Ali N (2006) Int J Nanomanuf (Accepted for publication on 1st November)Google Scholar
  6. 6.
    Ali N, Neto VF, Grácio J (2003) J Mater Res 18(2):296CrossRefGoogle Scholar
  7. 7.
    Neto VF (2004) Investigation on the film properties of advanced diamond coatings deposited using time-modulated CVD, Master Dissertation, University of Aveiro, JuneGoogle Scholar
  8. 8.
    Heckele M, Schomburg WK (2004) J Micromech Microeng 14:R1CrossRefGoogle Scholar
  9. 9.
    Ralchenko VG, Smolin AA, Pereverzev VG, Obraztsova ED, Korotoushenko KG, Konov VI, Lakhotkin YV, Loubnin EN (1995) Diamond Rel Mater 4:754CrossRefGoogle Scholar
  10. 10.
    Ager JW, Drory MD (1993) Phy Rev B 48:2601CrossRefGoogle Scholar
  11. 11.
    Kulisch W, Ackermann L, Sobisch B (1996) Physica Status Solidi (a) 154:155CrossRefGoogle Scholar
  12. 12.
    Xu CH, Wang CZ, Chan CT, Ho KM (1991) Phys Rev B 43:5024CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • V. F. Neto
    • 1
    Email author
  • R. Vaz
    • 1
  • N. Ali
    • 1
  • M. S. A. Oliveira
    • 1
  • J. Grácio
    • 1
  1. 1.Department of Mechanical Engineering, TEMA – Centre for Mechanical Technology and AutomationUniversity of AveiroAveiroPortugal

Personalised recommendations