Compacting of molybdenum powder by pressures higher than 2.0 GPa

摘要

Compacting of powder of molybdenum was made in an anvil type device of superhigh pressure. The pressure of processing was within the limits of 2.0 - 6.0 GPa. Maximum density (99%) was achieved at 3.6 GPa. The heating to the temperature of 800°C has not changed this parameter. Durability of coupling of separate grain in a sample was estimated qualitatively by micro-hardness measurements. The maximum value of micro-hardness reached 4.000 MPa. The qualitative tendency of the micro-hardness curve is explained in terms of the physical enlargement of the X-Ray lines, received by the Debay-Sherer method.