Study on the weldability of stainless steel fabricated by powder metallurgy and metal injection molding for optoelectronic packages

Chun-Ting Lin*, Bi Shiou Chiou, Sien Chi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

To reduce the cost of optoelectronic modules, powder metallurgy (PM) and metal injection molding (MIM) are employed to fabricate metal housings for optoelectronic packages. During the laser welding of PM steel, the rising gas pressure pushes the molten metal out of the welding regions, resulting in weak and unstable joints. Metal parts fabricated by the MIM method provide good weldability, shape complexity, low cost, and long-term reliability. By using the MIM method, defect-free welding joints and postwelding-shifts of less than 1 μm are achieved, and the optoelectronic packages are reliable. Employment of MIM not only gives optoelectronic module designers more design flexibility due to the advantage of shape complexity, but also makes low-cost triple-directional optoelectronic modules realizable.

Original languageEnglish
Article number084002
JournalOptical Engineering
Volume45
Issue number8
DOIs
StatePublished - 1 Aug 2006

Keywords

  • Bidirectional transmission
  • Fiber
  • Laser welds
  • Metal injection molding
  • Optoelectronic packages

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