Effects of Si addition on the oxidation behavior of a Cu–Zr-based bulk metallic alloy

Kai, Wu; Kao, P.C.; Lin, P.C.; Ren, I.F.; Jang, J.S.C.

doi:10.1016/j.intermet.2010.03.005

Cited by 17 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Finally, in the case of the quaternary Zr 62 Cu 23 Ti 9 Si 6 amorphous system, we note that although the film is fully oxidized after 10 s of treatment, the crystallinity is low, as manifested by the overlapping characteristic peaks of the tetragonal and monoclinic ZrO 2 . This result suggests that this system requires longer treatment time for obtaining pure and unambiguous crystallinity, 32 in pure tetragonal ZrO 2 [ Fig. 5(e)].…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Tetragonal or monoclinic ZrO2 thin films from Zr-based glassy templates

Kovač

Cvelbar

Patsalas

et al. 2012

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

View full text Add to dashboard Cite

The authors report on the selective formation of pure tetragonal or mixed tetragonal-monoclinic ZrO2 films by means of post-growth oxygen plasma treatment of Zr-based Zr–Cu ternary or quaternary metallic glassy (MG) films containing minor additions of Al, Ti, and Si. It came out that the choice of the third and/or fourth element in the MG template, in conjunction with oxygen plasma conditions and treatment time, determine the crystal structure and the surface morphology of the ZrO2 films. The authors found that the oxidation of the Zr–Cu MG template resulted in mixed tetragonal-monoclinic ZrO2 film with rather rough surface, whereas in the case of Al additions smooth surfaces of pure tetragonal or mixed tetragonal-monoclinic ZrO2 films were grown after short and long treatment times, respectively. In addition, oxygen plasma treatment of MG templates containing Ti and/or Si minor additions resulted in mixed tetragonal-monoclinic ZrO2 films, the doping element and the treatment times adjusting besides the concentration of each phase also the surface morphologies, which can vary from cones, in the case of Ti addition, to nanosponge and completely rough structures in Si ternary and Si/Ti quaternary systems, respectively. These findings suggest a quick, amenable, and low cost method of two-step industrial scale processing for selective growth of tetragonal and/or monoclinic ZrO2 with specific surface morphology.

show abstract

Section: Resultsmentioning

confidence: 99%

“…Al was selected because it is already reported as a promoter of the formation of the tetragonal ZrO 2 in bulk MGs but not in film form, 31 Ti was chosen because of its high oxidation rate, whereas Si for its oxidation resistance. 32 Finally the quaternary Zr 62 Cu 23 Ti 9 Si 6 system was studied because of its high glass forming ability.…”

Section: Introductionmentioning

confidence: 99%

Tetragonal or monoclinic ZrO2 thin films from Zr-based glassy templates

Kovač

Cvelbar

Patsalas

et al. 2012

Journal of Vacuum Science &Amp; Technology A: Vacuum, Surfaces, and Films

View full text Add to dashboard Cite

show abstract

“…For example, for amorphous Cu-Zr-Al ternary alloys with a relatively low Al content of 10 at.%, thermal oxidation is known to result in a double-layered structure, consisting of a tiny Al interfacial oxide layer and a Zr oxide top layer, depending on the oxidation temperature. [43][44][45][46][47][48][49]. Based on the previous oxidation studies of Al2Zr binary alloys [22,25,50], it may be presumed that thermal oxidation of amorphous Cu-Zr-Al ternary alloys with a similar Al/Zr atomic ratio of ½ should also result in the formation of a stable amorphous (Zr0.67Al0.33)O1.83 passive layer by synchronous oxidation of Zr and Al (since Cu has a much lower oxygen affinity).…”

Section: Introductionmentioning

confidence: 99%

On the competition between synchronous oxidation and preferential oxidation in Cu-Zr-Al metallic glasses

Jeurgens

Hong

et al. 2020

Corrosion Science

View full text Add to dashboard Cite

“…temperature, time, pressure, humidity) and the nominal (bulk) composition of the alloy [14,[18][19][20]. During oxidation, the composition of the alloy adjacent to the developing oxide overlayer can strongly deviate from the bulk alloy composition due to the combined effects of, for example, preferential oxidation, interfacial segregation and the nucleation of crystalline intermetallic phases.…”

Section: Introductionmentioning

confidence: 99%