Replication of Micro pillars by PEEK injection moulding with CrN coated Ni tool

    Research output: Contribution to journalJournal articleResearchpeer-review


    A micro-structured nickel insert was investigatedfor polyether ether ketone (PEEK) injection moulding. Themicro-features were circular holes 4 μm in diameter and2 μm deep, with a 2-μm edge-to-edge distance. Six thousand moulding cycles were operated. Half of the insert was coatedby approximately 200 nm CrN. PEEK parts produced by the coated side and uncoated side were compared. Coating thickness was measured at intervals of production and employed tocharacterize the coating wear. Pillar geometry at fixed locationson PEEK parts was studied by scanning electron microscope(SEM). Energy-dispersive X-ray spectroscopy (EDS)was conducted on the PEEK parts in order to study the possiblenickel and silver contamination. The results show that the studied coating had a very low wear, and no nickel or silvercontamination on PEEK was detected for both parts producedby coated and uncoated sides. Coating improved demoulding by reducing small indentations on pillars.
    Original languageEnglish
    JournalInternational Journal of Advanced Manufacturing Technology
    Issue number1
    Pages (from-to)383-388
    Publication statusPublished - 2015


    • Micro-pillars
    • PEEK
    • Injection moulding
    • CrN coating
    • Ni and Ag contamination


    Dive into the research topics of 'Replication of Micro pillars by PEEK injection moulding with CrN coated Ni tool'. Together they form a unique fingerprint.

    Cite this