Thermal spray and cold spray analysis of density, porosity, and tensile Specimens for use with LIGA applications

DECKER,MERLIN K. ; SMITH,MARK F.

Sandia National Laboratories

关键词: Tensile Properties;    Aluminium;    Mechanical Properties;    Coating;    Liga;   

DOI  :  10.2172/752018
RP-ID  :  SAND2000-0339
RP-ID  :  AC04-94AL85000
RP-ID  :  752018

美国|英语

来源: UNT Digital Library

【 摘 要 】

This analysis provides a preliminary investigation into using Twin-Wire Arc Thermal Spray and Cold Spray as material deposition processes for LIGA applications. These spray material processes were studied to make an initial determination of their potential as alternatives to producing mechanical parts via the electroplating process. Three materials, UltraMachinable{reg_sign} Stainless Steel, BondArc{reg_sign}, and aluminum, were sprayed using Thermal Spray. Only aluminum was sprayed using the Cold Spray process. Following the spray procedure, the test specimens were released from a copper mold and then tested. Three tests, density, tensile strength, and porosity, were performed on the specimens to determine the spray effect on material properties. Twin-Wire Arc Thermal Spray did not demonstrate adequate deposition properties and does not appear to be a good process candidate for LIGA. However, Cold Spray yielded better density results and warrants further investigation to analyze the minimum feature size produced by the process.