| Title |
The Permeation of hydrogen in Liquid silver - Copper Alloys |
| Authors |
진억용(Eog Young Chin); 이재영(Jai Young Lee) |
| Abstract |
The rate of absorption of hydrogen in stagnant liquid silver-copper alloys has been measured using a steady state gas-liquid metal diffusion cell technique. The appropriate solution of Fick`s first law has been used to calculate the hydrogen permeability (R_H). The rate of hydrogen dissolution in liquid silver-copper alloys has been found to be controlled by diffusion of hydrogen in liquid metal. Permeabilities of hydrogen in liquid silver-copper alloys in the temperature range of 1000℃ to 1160℃ can be described by the following Arrhenious type equations; R_H pure Ag=5.47×10^(-4)exp{(-16872.9±700.0)/RT} wt% ㎠/sec R_H Ag-1% Cu alloy=2.27×10^(-4)exp{(-13859.6±1068.7)/RT} wt% ㎠/sec R_H Ag-3% Cu alloy=2.16×10^(-4)exp{(-13227.8±673.9)/RT} wt% ㎠/sec R_H Ag-5% Cu alloy=2.15×10^(-4)exp{(-12719.6±1351.4)/RT} wt% ㎠/sec R_H Ag-7% Cu alloy=1.79×10^(-4)exp{(-11909.7±1565.6)/RT} wt% ㎠/sec The permeability of hydrogen in liquid silver-copper alloys increased and the activation energy of permeation of hydrogen decreased with increasing copper concentration at constant temperature. |