AVS 64th International Symposium & Exhibition
    Vacuum Technology Division Monday Sessions
       Session VT-MoA

Paper VT-MoA10
Outgassing Rate Measurements of New Materials at NIST

Monday, October 30, 2017, 4:40 pm, Room 7 & 8

Session: Material Outgassing, Adsorption/Desorption and XHV
Presenter: Makfir Sefa, NIST
Authors: M. Sefa, NIST
J.A. Fedchak, NIST
J. Scherschligt, NIST
A. Zeeshan, NIST
Correspondent: Click to Email
The Thermodynamic Metrology Group at NIST is interested in investigating the outgassing rates and gas uptake properties of a variety of materials. The motivation of these investigations is to support programs aimed to develop new vacuum, pressure, and temperature sensors. For example, materials with ultra-low outgassing rates are necessary to develop a cold-atom vacuum standard (CAVS), which is a metrological-quality XHV/UHV sensor based on ultra-cold atom technology. Chambers and vacuum components used in the CAVS must have ultra-low outgassing rates to achieve UHV and XHV backgrounds. The group is also interested in developing embedded temperature and pressure sensors, where the outgassing or gas uptake properties could influence sensor performance or applicability. In addition, the gas uptake properties of unique materials can be exploited for gas sensors or storage. This talk will highlight the outgassing measurements of heat-treated stainless steel chambers and 3-D printed stainless steel and titanium chambers. In addition, absorption and desorption of gases in 3-D printed nano-composite plastics will be discussed.