Self adhesive tapes. Measurement of water vapour transmission in a warm humid atmosphere

1997 ◽  
Keyword(s):  
Water Vapour ◽  
Humid Atmosphere

scholarly journals High Temperature Oxidation Behavior of Creep Resistant Steels in Water Vapour Containing Environments

Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 616
Author(s):  
Mária Hagarová ◽  
Gabriela Baranová ◽  
Martin Fujda ◽  
Miloš Matvija ◽  
Peter Horňak ◽  
...  
Keyword(s):  
Water Vapour ◽  
Oxidation Rate ◽  
Oxidation Behavior ◽  
Middle Layer ◽  
Bottom Layer ◽  
Humid Atmosphere ◽  
Temperature Oxidation ◽  
Creep Resistant Steels ◽  
High Temperature Oxidation Behavior ◽  
Hematite Fe2o3

This study describes the water vapour effect on the oxidation resistance of 9Cr creep resistant steels. Boiler P91 and MarBN steels were oxidized for 3000 h in a simulated humid atmosphere with ~10% water vapour. The oxidation kinetics had a stable course for 1000 h and was evaluated by the weight gain curves for both experimental steels and both oxidation temperatures. The oxidation rate was higher at 650 °C versus 600 °C, as reflected by the oxidation rate coefficient. A significant increase occurred after 1000 h of oxidation, which was related to the local breakdown oxide scale and oxide nodules were formed on steel. This oxidation behavior was influenced by the fact that a compact spinel structure of iron oxides and alloying elements were not formed on the steel. Analysis after 3000 h of exposure showed hematite Fe2O3 formed on the outer layer, magnetite Fe3O4 on the middle layer, and the bottom layer consisted of iron-chromium-spinel (Fe,Cr)2O3.

Atmospheric water vapour processing

Waterlines ◽  
1993 ◽  
Vol 12 (2) ◽  
pp. 20-22 ◽  
Author(s):  
Roland Wahlgren
Keyword(s):  
Water Vapour ◽  
Atmospheric Water ◽  
Atmospheric Water Vapour

Đánh giá quan hệ giữa hàm lượng hơi nước khí quyển và độ chính xác định vị tuyệt đối bằng GPS ở Việt Nam

2008 ◽  
Vol 30 (2) ◽  
pp. 161-169
Author(s):  
Lê Huy Mình ◽  
Phạm Xuân Thành ◽  
Nguyễn Chiến Thắng ◽  
Trần Thị Lan ◽  
R. Fleury ◽  
...  
Keyword(s):  
Water Vapour ◽  
Viet Nam ◽  
Absolute Positioning ◽  
The Absolute

Estimatlon of the relatlon between the total tropospheric water vapour and the precision of the absolute positioning by GPS in Vietnam

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