Oxidation resistant nickel alloy
The present invention relates to an oxidation resistant Nickel alloy, characterized in the following chemical composition (in % by weight): 4-7 Cr, 4-5 Si, 0.1-0.2 Y, 0.1-0.2 Mg, 0.1-0.2 Hf, remainder Ni and unavoidable impurities. A preferred embodiment has the following chemical composition (in % by weight): 6 Cr, 4.4 Si, 0.1 Y, 0.15 Mg, 0.1 Hf, remainder Ni and unavoidable impurities. This alloy has an improved oxidation resistance and good creep properties at high temperatures.
1. Oxidation resistant Nickel alloy, comprising the following chemical composition (in % by weight): 4-7 Cr, 4-5 Si, 0.1-0.2 Y, 0.1-0.2 Mg, 0.1-0.2 Hf, remainder Ni and unavoidable impurities.
2. Oxidation resistant Nickel alloy as claimed in claim 1 , comprising 5-6% by weight Cr.
3. Oxidation resistant Nickel alloy as claimed in claim 2 , comprising 6% by weight Cr.
4. Oxidation resistant Nickel alloy as claimed in claim 1 , comprising 4.4% by weight Si.
5. Oxidation resistant Nickel alloy as claimed in claim 1 , comprising 0.1% by weight Y.
6. Oxidation resistant Nickel alloy as claimed in claim 1 , comprising 0.15% by weight Mg.
7. Oxidation resistant Nickel alloy as claimed in claim 1 , comprising 0.1% by weight Hf.
8. Oxidation resistant Nickel alloy as claimed in claim 1 , wherein the alloy is used as a type N thermocouples sheath material.