Micro MIM: Micro-Moulding of Al Alloy Powder Mixture Containing Ultrafine Al and Nano-Sized Cu Particles

摘要: This paper presents preliminary results of a new fabrication process for producing micro Albased alloy components using Micro-moulding and sintering. The process involves (1) the fabrication of micromoulds of PDMS made from SU-8 master produced by photolithography;(2) preparation of metallic paste by mixing 80 wt% of ultrafine Al (2.5 micron in average) powder, 5 wt% nanopowder of Cu (less than 60nm), and 15 wt% adhesive binder in about 30ml of acetone;(3) mould filling with metallic paste and demoulding; and (4) sintering of moulded component in Ar atmosphere. This research proposes one possible way of fabrication of three-dimensional shaped Al-based alloy components.