| 摘要 |
The invention relates to a process for preparing a solid solution containing at least one hard phase which has a simple hexagonal crystal structure and is selected from the group comprising mixed carbides or carbonitrides of molybdenum and tungsten. This process involves preparing an alloy powder which consists of a solid solution of molybdenum and tungsten. This alloy powder is then admixed with carbon in such an amount that (Mo, W)2C and/or (Mo, W)2(CN) is formed. The mixture is heated to a temperature at which (Mo, W)2C and/or (Mo, W)2(CN) is stable. Then (Mo, W)2C and/or (Mo, W)2(CN) is admixed with carbon in such an amount that (Mo, W)C and/or (Mo, W)(CN) is formed, possibly together with an iron-group metal. Then the mixture is heated to a temperature at which (Mo, W)C and/or (Mo, W)(CN) is stable. <IMAGE>
|
