Oxidation of ruthenium aluminide-based alloys: The role of microstructure and platinum additions

Oxidation of RuAl and NiAl Thin Films: Evolution of Surface Morphology and Electrical Resistance

“…Unlike NiAl, no reaction with the substrate was detected for oxidation temperatures up to 850 • C, and a layered oxide was produced containing alternating layers of Al 2 O 3 and a Ru-rich layer. The Ru-rich layer appears to contain both aluminum and oxygen near the surface, but is nearly pure ruthenium near the substrate, particularly after oxidation at 850 • C. A similar banded oxide has been seen in the hightemperature oxidation of RuAl [45], [46], [49], although this is usually associated with two-phase Ru-RuAl alloys, whereas the film studied here has been confirmed through TEM to be single-phase RuAl prior to oxidation.…”

RuAl and its alloys, Part II: Mechanical properties, environmental resistance and applications

“…These show that the kinetics of a chlorine/hydrogen evolution on RuAl is comparable with commercially used coatings [39,101].…”

“…Cao et al studied the cyclic oxidation behavior of near single-phase RuAl and two-phase RuAl-based alloys in air between 1273 K and 1573 K [101]. The samples were synthesized by ingot metallurgy and a minimal volume fraction of 1% of second phase (d-Ru-rich eutectic) was observed.…”

“…Despite the unsatisfactory results obtained in an isolated study where plasma vapor deposition was applied [101] the use of other suitable deposition techniques could result in better coatings.…”

Thermal and physical properties of B2 Al–Ir–X (X=Ni, Ru, Pd, Co, Fe) alloys

“…Although all the alloys in this work are Al-Ir based, as a way to validate the predictions for the melting temperature of the ternary systems, it is interesting to note the methodology gives good estimates for the melting temperature of the basic B2 Al-X systems. The most accurate predictions (2% error) correspond to AlNi, AlRu, and AlCo, with T m ¼ 1911 K [27], 2333 K [28], and 1913 K [29], respectively. Slightly larger deviation (4%) is found for AlFe (T m ¼ 1583 K [29]).…”