Microstructural and topographical changes of Ni-P plated moulds in glass lens pressing

Jun Masuda, Jiwang Yan, Takaharu Tashiro, Yasushi Fukase, Tianfeng Zhou, Tsunemoto Kuriyagawa

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The changes in microstructure and topography of nickel-phosphorus (Ni-P) plated steel moulds in a glass lens moulding process were investigated by heating tests. The results show that, at a high temperature, Ni atoms diffuse from the inner Ni-P plating layer into the outer release agent coating consisting of precious metals. The atomic diffusion leads to partial surface swelling, which makes the mould surface rough and cloudy. The diffusion is influenced by the temperature, interface structure and stress state of the moulds. These findings provide references for developing new mould materials and for improving the service life of the moulds.

Original languageEnglish
Pages (from-to)86-102
Number of pages17
JournalInternational Journal of Surface Science and Engineering
Volume3
Issue number1-2
DOIs
Publication statusPublished - 2009 Apr 17
Externally publishedYes

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Keywords

  • Atomic diffusion
  • Glass moulding
  • Interface phenomenon
  • Mould structure
  • Ni-P plating
  • Surface coating

ASJC Scopus subject areas

  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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