Metallic bondcoat with a high gamma/gamma' transition temperature and a component
View Patent ↗A metallic coating or alloy is provided. The metallic coating includes iron, cobalt, chromium, and aluminum. Tantalum may also be included. A new addition in nickel based coating with stabilized gamma/gamma′ phases at high temperatures lead to a reduction of local stresses. A component including the metallic coating or alloy is also provided.
1. A nickel based alloy, which contains γ and γ′ phases, consisting of:
iron in an amount of between 0.5 wt % to 5 wt %;
chromium in an amount of between 12 wt %-16 wt %;
aluminum in an amount of between 7 wt %-8 wt %;
a member selected from the group consisting of tantalum in an amount of between 4 wt % and 8 wt %, yttrium in an amount of between 0.1 wt %-0.7 wt %, and combinations thereof; and
remainder nickel.
2. The alloy according to claim 1 , wherein the amount of iron is between 1 wt %-4 wt %.
3. The metallic alloy according to claim 1 , wherein the amount of iron is 2.7%.
4. The alloy according to claim 1 , wherein tantalum is present in an amount of between 4 wt % and 8 wt %.
5. The alloy according to claim 1 , wherein the amount of chromium is 14.4 wt %.
6. The alloy according to claim 1 , wherein the amount of aluminum is 7.75 wt %.
7. The alloy according to claim 1 , wherein yttrium is present.
8. A component comprising:
an alloy according to claim 1 .
9. A component comprising:
a metallic coating consisting of an alloy as claimed in claim 1 .