Pressure-composition isotherms of TiC1-x-H system at elevated temperatures

Abstract

Pressure-composition isotherms of TiC1-x-H system were measured at 773,873 and 973 K over a pressure range from 10-2 to 10 5 Pa. The obtained isotherms could be divided in three concentration regions. In the low concentration region in which [H]/[TiC] ≤ 1.4 × 10-3, Sieverts' law held, and the solubility of hydrogen clearly increased with decreasing temperature. The enuialpy of solution was -70 ±5 kJ mol-1. In the region in which 1.4 × 10 -3