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In situ investigation of chemical processes by X-ray diffraction technique. Studies of metal hydrides formed during electrochemical evolution of hydrogen
| Content Provider | Semantic Scholar |
|---|---|
| Author | Juðkënas, Remigijus |
| Copyright Year | 2004 |
| Abstract | X-ray diffraction (XRD) has been used in chemical science and industry for nearly as long as a hundred years. As the beginning of this wide use can be considered the year 1916 when the so-called powder method was found by Debye and Scherrer. Up to this date, studies of X-ray diffraction were performed only with monocrystals. The discovery of the powder method, also called the polycrystal method, expanded the use of XRD both in science and industry. XRD methods were constantly improved and this opened new possibilities of their application. One of them is the use of XRD technique in in situ studies of chemical and electrochemical processes. As an example of a successful use of this method, studies of metal hydrides can be presented. They reflect the wide possibilities of XRD technique, such as determination of phase composition, evaluation of internal structure of crystallites (their size and microdeformations), measurement of stresses. All the above characteristics can be evaluated by XRD technique in the course of hydrides formation, this circumstance being of vital importance due to the fact that hydrides of many metals (e.g., Ni) are unstable and rapidly decompose with a decrease in hydrogen pressure. Review article |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.elibrary.lt/resursai/LMA/Chemija/Che010_021.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
