Thermogravimetry-evolved gas analysis�?�mass spectrometry system for materials research

[摘要] Thermal analysis is a widely used analytical technique for materials research. However, thermal analysis with simultaneous evolved gas analysis describes the thermal event more precisely and completely. Among various gas analytical techniques, mass spectrometry has many advantages. Hence, an ultra high vacuum (UHV) compatible mass spectrometry based evolved gas analysis (EGAâ€�?�MS) system has been developed. This system consists of a measurement chamber housing a mass spectrometer, spinning rotor gauge and vacuum gauges coupled to a high vacuum, high temperature reaction chamber. A commercial thermogravimetric analyser (TGA: TG + DTA) is interfaced to it. Additional mass flow based gas/vapour delivery system and calibration gas inlets have been added to make it a versatile TGAâ€�?�EGAâ€�?�MS facility. This system which gives complete information on weight change, heat change, nature and content of evolved gases is being used for

[学科分类] 材料工程

[关键词] Evolved gas analysis;thermogravimetry;mass spectrometry;temperature programmed decomposition;gasâ€�?�solid interaction;nano-materials.