Looking at the desorption rate, pumping speed and re-adsorption on surfaces, the net outgassing of the system can be calculated. In this article, we share more on the outgassing process and the outgassing rates of common materials. Lowering the outgassing rate allows lower vacuum pressures to be...
Outgassing rates of vacuum wall candidate materials; stainless steel SS-304L and YUS-170, Inconel-625 and Hastelloy-X, and first wall materials; molybdenum, pyrolytic graphite and silicon carbide are measured before, during and after a bake-out at 500 degree C. The out gassing rate from the...
A measurement apparatus for vacuum material outgassing rates was developed, which was mainly composed of four systems, including pumping system, switching between two pumping paths(SPP) measurement system, constant volume measurement system, bake heating and light irradiation heating system. The ultimate ...
R. N. Peacock, “Practical selection of elastomer materials for vacuum seals”, J. Vac. Sci. Technol. 17 (1), pp. 330–336 (1980). Article ADS Google Scholar N. Yoshimura, “A differential pressure-rise method for measuring the net outgassing rates of a solid material and for estimati...
Table 2. Polymers and materials outgassing characteristics, testing results in space conditions (vacuum and high temperatures). Data from 1. Peacock et al. (1980) where the outgassing rates of unbaked and baked polymers in torr l s−1 are given and from 2. Patrick et al. (1973) where ...
A board material with collected volatile of less than 0.1% and total mass loss of less than 1% when placed in a vacuum for 24 hours at a temperature of 125°C is considered as the substrate with low outgassing rate. Below table lists a few dielectric materials with low offgassing rates....
Vacuum outgassing rates have been measured on several plastics and epoxies, some of which were filled with inorganic materials. The materials examined were chosen as possible candidates for the manufacture of vacuum insulators for large accelerators where good vacuum is a necessity. Generally, all the...
Temperature-controlled quartz crystal microbalance measurements, quantifying the loss of deposited organic materials during vacuum ultraviolet radiation illumination of the deposition surface, suggest that some aerospace materials contribute less to spacecraft surface contamination than common outgassing measurement ...
191. Method for rapid determination of vacuum outgassing rates.: Ivory P.S. Fish, Rev. Sci. Instrum., 30, 889.doi:10.1016/0042-207X(60)90374-2ELSEVIERVacuum
A gas analytical system for measuring the evolved gases from materials during vacuum degassing is discussed. The outgassing data are based upon the through... ED Erikson,TG Beat,DD Berger,... - 《Journal of Vacuum Science & Technology A Vacuum Surfaces & Films》 被引量: 31发表: 1984年 A...