| 摘要 |
<p>The protective coating for the inventive composite billet used for hot shaping is embodied such that it is multi-component and comprises a base metallic layer having a specified continuous porosity, compacting materials in the form of the mixture of fine metallic and ceramic powders whose fraction is less than 50 mkm, and chemical reagents. Said protective coating being applied is compacted by plastic deformation at a reduction rate equal to or less than 5 %. Said composite billet exhibits a high quality and reliability level as a result of high heat-protective and gas-protective properties of the coating, thereby reducing the cost and extending the technological possibilities of the use thereof.</p> |
