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| Content Provider | CSIR - National Metallurgical Laboratory (NML) |
|---|---|
| Author | Krishnan, T. S. |
| Editor | Gupta, P. K. Mannar, J. E. |
| Abstract | THE chief application of zirconium metal and zircaloy is in nuclear reactor engineering as cladding material for the fuel elements and as structural material in the construction of reactor cores . The selection is based on considerations ' of low neutron absorption cross section, fabricability, corrosion resistance and mechanical strength at elevated temperatures. These Properties are, however , sensitive to impurity levels and alloying compositions . For example , for neutron economy the hafnium and boron contents should be within 200 ppm and 0'5 ppm respectively : for corrosion resistance the aluminium , carbon and nitrogen tolerances are respectively only 75 ppm , 500 ppm and 50 ppm ; and for ease of fabrication the maximum permissible oxygen content is 1500 ppm. In the large scale production of zirconium sponge and zircaloy ingots, it becomes there-fore essential to have a strict control of impurity levels in the successive stages of the batch wise production , in order to ensure consistency of quality and performance in the finished product. |
| Ending Page | 8 |
| Starting Page | 1 |
| File Format | |
| Conference Proceedings | Symposium on Non-ferrous Metals Technology |
| Language | English |
| Publisher | CSIR-National Metallurgical Laboratory |
| Publisher Date | 1969-02-01 |
| Publisher Place | Jamshedpur |
| Access Restriction | Open |
| Subject Keyword | Metal Extraction & Forming Corrosion Resistant Aluminium Metallurgy Nitrogen Carbon |
| Content Type | Text |
| Resource Type | Article |
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