United States Patent
US Patent 5330589: Hafnium alloys as neutron absorbers
US 5330589 ยท granted 1994-07-19
| Patent Number | 5330589 |
|---|---|
| Title | Hafnium alloys as neutron absorbers |
| Filed | 1993-05-25 |
| Granted | 1994-07-19 |
| Inventor(s) | Boching Cheng, Rosa L. Yang |
| Assignee | Electric Power Research Institute Inc |
| CPC Classification | C22C14/00, C22C16/00, C22C27/00 |
| Number of Claims | 4 |
Abstract
A hafnium alloy consisting essentially of hafnium and containing Sn by 0.1-1.5 weight %, O by 0.03-0.2 weight %, Fe by 0.01-0.15 weight %, Zr by 0.02-2.0 weight %, and (1) Cr by 0.01-0.15 weight %, and Ni by less than 0.10 weight %, (2) Cr by 0.01-0.15 weight %, Ni by less than 0.10 weight %, and Mo by 0.01-0.2 weight %, (3) Nb by 0.2-1.0 weight %, or (4) Nb by 0.2-1.0 weight %, and Mo by 0.01-0.2 weight % has high neutron-absorbing capacity, high resistance to uniform and nodular corrosion, high tensile and creep strength, and good wear resistance, and is suited to be used as neutron absorber for nuclear power reactors.
Claims Summary
1. A hafnium alloy consisting of 0.1-1.5% Sn by weight, 0.03-0.2% O by weight, 0.01-0.15% Fe by weight, 0.01-0.15% Cr by weight, less than 0.10% Ni by weight, 0.02-2.0% Zr by weight, the balance being Hf and impurities.
Inventors
Assignee
Electric Power Research Institute Inc