We continue to develop resources related to the COVID-19 pandemic. See COVID-19 initiatives on Appropedia for more information.

Difference between revisions of "Vacuum Outgassing Characteristics of Unpigmented 3-D Printed Polymers Coated with ALD Alumina"

From Appropedia
Jump to navigation Jump to search
(Created page with "{{MOST}} {{Pearce-pubs}} {{MOST-RepRap}} ==Source== * Bihari, N., Heikkinen, I. T. S., Marin, G., Ekstrum, C., Mayville, P. J., Oberloier, S., ... Pearce, J. (Accepted/Inpres...")
(No difference)

Revision as of 15:06, 29 July 2020


Sunhusky.png By Michigan Tech's Open Sustainability Technology Lab.

Wanted: Students to make a distributed future with solar-powered open-source 3-D printing.
Currently looking for PhD or MSC student interested in solar energy policy- apply now!
Contact Dr. Joshua Pearce - Apply here

MOST: Projects & Publications, Methods, Lit. reviews, People, Sponsors, News
Updates: Twitter, Instagram, YouTube

OSL.jpg


Pearce Publications: Energy Conservation Energy Policy Industrial SymbiosisLife Cycle Analysis Materials Science Open Source Photovoltaic Systems Solar CellsSustainable Development Sustainability Education



This page is part of an international project to use RepRap 3-D printing to make OSAT for sustainable development. Learn more.

Research: Open source 3-D printing of OSAT RecycleBot LCA of home recyclingGreen Distributed Recycling Ethical Filament LCA of distributed manufacturingRepRap LCA Energy and CO2 Solar-powered RepRapssolar powered recyclebot Feasibility hub Mechanical testingRepRap printing protocol: MOST‎ Lessons learnedMOST RepRap BuildMOST Prusa BuildMOST HS RepRap buildRepRap Print Server


Make me: Want to build a MOST RepRap? - Start here!Delta Build Overview:MOSTAthena Build OverviewMOST metal 3-D printer Humanitarian Crisis Response 3-D Printer



Source

  • Bihari, N., Heikkinen, I. T. S., Marin, G., Ekstrum, C., Mayville, P. J., Oberloier, S., ... Pearce, J. (Accepted/Inpress). Vacuum Outgassing Characteristics of Unpigmented 3-D Printed Polymers Coated with ALD Alumina.Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films (in press, 2020).[ open access] Aalto preprint
Clearaldcoat.png

Abstract

3-D printing offers enormous potential for fabricating custom equipment for space and vacuum systems, but in order to do this at low-costs, polymers are necessary. Historically polymers have not been suited for these applications because of outgassing, but if coated with a conformal, inorganic film introduced with atomic layer deposition (ALD), then outgassing can be reduced. Previous work on coating ALD layers showed promise with heavily outgassing carbon black containing 3-D printed polymers. In this study, ALD aluminum oxide and a commercially available vacuum sealant resin were used to coat clear, acrylonitrile butadiene styrene (ABS), polycarbonate (PC) and polypropylene (PP). Characterization of the films included spectroscopic ellipsometry for thickness, microstructure analysis with scanning electron microscopy, chemical analysis with energy-dispersive X-ray spectroscopy, and residual gas analysis to study relative change in outgassing. ALD-coated samples registered lower pressures than the resin-coated ones. The results showed that the ALD coatings could effectively inoculate unpigmented 3-D printed plastics, which could be used in contamination-sensitive environments such as semiconductor processing systems and space environments.

Keywords

3-D printing,chemical compatibility, semiconductor wet processing, custom labware,  clean room; vacuum; outgassing; polymer; atomic layer deposition; semiconductor processing



See Also