The effect of aluminum as an alloying addition or as an implant on the high-temperature oxidation of Ni-25Cr

Journal Article · Mon Oct 01 00:00:00 EDT 1990 · Oxidation of Metals; (USA)

DOI:https://doi.org/10.1007/BF00665020· OSTI ID:6364498

Hou, P Y ^[1]; Stringer, J ^[2]

---

1. Lawrence Berkeley Laboratory, CA (USA)
2. Electric Power Research Institute, Palo Alto, CA (USA)

The oxidation behavior of aluminum-implanted Ni-25Cr and Ni-25Cr containing 1 wt.% Al has been studied at 1,000C and 1,100C in oxygen. As did Y alloying addition or Y-implantation, 1 wt.% Al added to Ni-25Cr prevented nodular formation of Ni-containing oxides, improved spalling resistance of the scale upon cooling to a similar degree, and eliminated the formation of large voids between the alloy and the scale at the oxidation temperature. However, the Al addition did not alter the rate of growth of the Cr{sub 2}O{sub 3} scale, nor did it change the growth direction. Al-implantation produced no effect even when the maximum concentration and depth of penetration were adjusted to be identical with those of the yttrium in the Y-implanted alloy. The implications of these results concerning the reactive element effect are discussed.

• OSTI ID: 6364498
• Journal Information: Oxidation of Metals; (USA), Journal Name: Oxidation of Metals; (USA) Vol. 34:3-4; ISSN 0030-770X; ISSN OXMEA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ALUMINIUM ADDITIONS
ALUMINIUM ALLOYS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
DATA
ELECTRON MICROSCOPY
EXPERIMENTAL DATA
INFORMATION
ION IMPLANTATION
MEASURING METHODS
MICROSCOPY
NICKEL ALLOYS
NICKEL BASE ALLOYS
NUMERICAL DATA
OXIDATION
OXIDES
OXYGEN COMPOUNDS
SCANNING ELECTRON MICROSCOPY
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE