| 摘要 |
Coating for a component made of nickel alloy of the type Cr: 15-20 %, Co: 8-20 %, Mo: 1.5-4 %, Ti: 3-5 %, Al: 3-3.5 %, W: </= 3.8 %, Fe: </= 1.2 %, Nb: </= 0.9 %, C: </= 0.1 %, B: </= 0.01 %, Ta: </= 2.8 %, the remainder being Ni, which has a hardness of approximately 400 HV comprising a number of layers (5', 5'') made of antiwear material containing cobalt, of the type: C: < 1 %, Cr: 26-30 %, W: 18-21 %, Ni: 4-6 %, V: 0.75-1.15 %, Fe: </= 3 %, Mn: </= 1 , Si: </= 1 %, B: </= 0.05 %, the remainder being Co, characterised in that between the layers containing cobalt (5', 5'') and the component a buffer layer (5) is arranged, produced from a prealloyed powder of the following composition: Si: 0.7-2.9 %, Cr: 11-26 %, Fe: 0.5-3 %, C: 0.35-0.85 %, B: 0.3-1.35 %, Ni: 20-69 %, W: 3.6-16.8 %, Mn: </= 0.8 %, Co: 7-41.5 %. Decrease in elimination of the region of low hardness. <IMAGE> |
