Improvement of the oxidation resistance of Tribaloy T-800 alloy by the additions of yttrium and aluminium

Zhang, Y.-D.; Zhang, C.; Liu, Hao; Hou, P.Y.; Yang, Zhi

doi:10.1016/j.corsci.2010.11.038

Cited by 35 publications

(11 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tribaloy T-900 is a modification of the T-800 alloy with a reduced volume fraction of [514]. Modification of the Tribaloy T-700 [515], T-800 [516], and T-900 [517] alloy compositions by additions of Al (5 wt%) and Y (0.5 wt%) resulted in a significant improvement of the cyclic oxidation resistance due to the formation of protective, compact and continuous external layers of Al 2 O 3 at 800 and 1000°C [515][516][517]. Moreover, the added Y was reported to enhance the adherence of oxide scales during sliding wear [517].…”

Section: Tribaloymentioning

confidence: 99%

Laves phases: a review of their functional and structural applications and an improved fundamental understanding of stability and properties

2020

View full text Add to dashboard Cite

Laves phases with their comparably simple crystal structure are very common intermetallic phases and can be formed from element combinations all over the periodic table resulting in a huge number of known examples. Even though this type of phases is known for almost 100 years, and although a lot of information on stability, structure, and properties has accumulated especially during the last about 20 years, systematic evaluation and rationalization of this information in particular as a function of the involved elements is often lacking. It is one of the two main goals of this review to summarize the knowledge for some selected respective topics with a certain focus on non-stoichiometric, i.e., non-ideal Laves phases. The second, central goal of the review is to give a systematic overview about the role of Laves phases in all kinds of materials for functional and structural applications. There is a surprisingly broad range of successful utilization of Laves phases in functional applications comprising Laves phases as hydrogen storage material (Hydraloy), as magneto-mechanical sensors and actuators (Terfenol), or for wear- and corrosion-resistant coatings in corrosive atmospheres and at high temperatures (Tribaloy), to name but a few. Regarding structural applications, there is a renewed interest in using Laves phases for creep-strengthening of high-temperature steels and new respective alloy design concepts were developed and successfully tested. Apart from steels, Laves phases also occur in various other kinds of structural materials sometimes effectively improving properties, but often also acting in a detrimental way.

show abstract

Section: Tribaloymentioning

confidence: 99%

Laves phases: a review of their functional and structural applications and an improved fundamental understanding of stability and properties

2020

View full text Add to dashboard Cite

show abstract

“…[3][4][5] Some Y, La, Ce, and other rare earth elements will also play some special roles in the high-temperature oxidation process of the alloys. [6,7] Sun [8] found that the addition of Al will form a composite oxide of Al and Si at the external oxide film/ matrix during the oxidation process at 1200°C, which can effectively inhibit the phase diffusion of alloy oxidation reaction components, so as to reduce the initial oxidation rate of Ni-20Cr-Si alloy. High content of Al (>6 wt%) or Cr (>12 wt%) elements was conducive to the formation of continuous Al 2 O 3 or Cr 2 O 3 outer oxide film.…”

Section: Introductionmentioning

confidence: 99%

Influence of Al content and low oxygen pressure preoxidation on high‐temperature oxidation resistance of Ni–25Cr–xAl–1Si–0.5Y alloys

Wang

Zhu

et al. 2022

Materials & Corrosion

View full text Add to dashboard Cite

The influence of Al content and low oxygen pressure preoxidation on the high‐temperature oxidation resistance of the Ni–25Cr–xAl–1Si–0.5Y (x = 0, 1, 3, 5 wt%) alloys were studied. The formation of oxides in low oxygen pressure preoxidation was investigated. The oxidation behavior of alloys with different Al content at 1000°C with and without preoxidation under low oxygen pressure was discussed. A protective oxide film was formed on the surface of alloys with different Al content in low oxygen pressure pre‐oxidation at 950°C for 5 h, but there were great differences in microstructures and properties. With the increase of Al content, the outermost oxide film of the alloy gradually changed from continuous Cr2O3 to Al2O3, and the oxidation resistance of the alloy increased gradually at 1000°C. By comparison, the oxidation resistance of Ni–25Cr–xAl–1Si–0.5Y (x = 0, 1, 3, 5 wt%) alloys can be significantly improved at 1000°C by low oxygen pressure preoxidation treatment.

show abstract

“…Unlike oxidation, hot corrosion can consume the metal and alloys at unpredictable faster rate, which eventually led to catastrophic failure of components (Eliaz et al, 2002;Smith et al, 1999). A numbers of previous studies focussed on, how to improve the oxidation and hot corrosion resistance by co-doping with rare earth elements (Domínguez-Meister et al, 2015;Funkenbusch et al, 1985;Li and Hou, 2007;Pint, 1997;Pivin et al, 1980;Saito et al, 1987;Smialek, 1991;Hou and Stringer, 1995;Yuduo et al, 2010;Zhang et al, 2014;Zhang et al, 2011;Rehman et al, 2019c, Yuwen andZhou, 2016;Zhao and Zhou, 2014). The doping of reactive elements could accelerate the compact and continuous layer of protective oxides such as Al 2 O 3 and Cr 2 O 3 .…”

Section: Introductionmentioning

confidence: 99%

Optimization of pre-oxidation time for corrosion resistance of cobalt based coating alloy in mixed sulphates

Rehman

Bidabadi

Yang

et al. 2021

ACMM

View full text Add to dashboard Cite

Purpose This study aims to optimise the effect of pre-oxidation on hot corrosion behaviour of Tribaloy T-900 at 900 °C in mixed Na2SO4 and K2SO4. Design/methodology/approach Prior to hot corrosion experiment, pre-oxidation treatments were carried in ambient air at 900 °C for 1, 5 and 10 h, respectively. The hot corrosion experiments were performed in a box type furnace at 900 °C. Both surfaces of specimens were brushed with saturated salt solution of 75 wt.% Na2SO4 + 25 wt.% K2SO4. After brushing, the salt-coated specimens were placed in electric stove to ensure drying of salt. After drying, presence of 3 mg/cm2 salt on specimen’s surface was ensured through weighting. Findings The 1-h pre-oxidation treatment prior to hot corrosion showed superior hot corrosion resistance against molten salt attack. An optimum pre-oxidation time of 1 h helped timely formation of protective Cr2O3 layer and inhibited the formation of less stable and porous surface oxides of Ni and Mo during hot corrosion. Originality/value Pre-oxidation effect on hot corrosion behaviour of refractory metal (such as Mo in investigated alloy) containing alloy has never been reported previously. Refractory metals oxide (e.g. MoO3) could transform the corrosion phenomena to catastrophic failure through acidic fluxing.

show abstract

Improvement of the oxidation resistance of Tribaloy T-800 alloy by the additions of yttrium and aluminium

Cited by 35 publications

References 24 publications

Laves phases: a review of their functional and structural applications and an improved fundamental understanding of stability and properties

Laves phases: a review of their functional and structural applications and an improved fundamental understanding of stability and properties

Influence of Al content and low oxygen pressure preoxidation on high‐temperature oxidation resistance of Ni–25Cr–xAl–1Si–0.5Y alloys

Optimization of pre-oxidation time for corrosion resistance of cobalt based coating alloy in mixed sulphates

Contact Info

Product

Resources

About