HfC–HfO 2modified high/superhigh temperature thermal protection coating for superior hot corrosion resistance and anti-oxidation performance DOI Creative Commons

Zhiyun Ye,

Shuqi Wang, Shuang Yu

и другие.

Journal of Advanced Ceramics, Год журнала: 2024, Номер 14(1), С. 9221014 - 9221014

Опубликована: Дек. 5, 2024

With the advances in thrust-weight ratio, service temperature of gas turbine engines even exceeds 1500℃, which is urgent to develop high/superhigh thermal protection systems for long-term service. Niobium alloys are increasingly viewed as a promising structural material high-temperature applications due their superior mechanical strength, but "pest" catastrophic oxidation greatly restricts its further application. Herein, HfC-HfO2 modified silicide coating was prepared via an innovative method halide-activated pack cementation combined with liquid-plasma-assisted particle deposition and sintering on niobium alloys, endowing composite excellent hot corrosion resistance resistance. This multilayer characterized by synergistic combination dense NbSi2 inner layer porous outer layer, exhibiting significant improvement performance compared single coating. The corroded gain only 13.94 mg·cm-2 after time 200 h at 900℃, shows intact oxide scale surface 1500℃ 500 min. ascribed formed robust Hf-rich skeleton provided deposited can accelerate formation high stability layer/oxide scale. Besides, multiple stress release mechanisms temperatures also provide huge contributions All these merits render competitive development

Язык: Английский

Formation and performance of niobium silicide diffusion coatings dependence on the halide activators DOI
Beatriz Aparecida Pinto, Osvaldo Mitsuyuki Cintho, N. Chaia

и другие.

Surface and Coatings Technology, Год журнала: 2025, Номер unknown, С. 131859 - 131859

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0

In-situ formation mechanism and long-term isothermal oxidation behaviors at 1400oC and 1500oC of (Nb,Ti,Mo)Si2-(Ti,Nb,Mo)5Si3 biphasic compositionally-complexsss ceramic composite coating on C103 alloy DOI
Xin Wang, Wei Zhang,

Tingyang Wang

и другие.

Corrosion Science, Год журнала: 2025, Номер unknown, С. 112914 - 112914

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0

Microstructure and Tribological Properties of Hf0.1Nb1.6Mo0.3Ta0.12C0.12 Medium-Entropy Niobium-Based Coating by Laser Metal Deposition DOI

Tong Sun,

Jinxiang Fang,

Haotian He

и другие.

JOM, Год журнала: 2025, Номер unknown

Опубликована: Май 13, 2025

Язык: Английский

Процитировано

0

Achieving an excellent synergy of strength and ductility in heat-treated laser powder bed fused Niobium-based alloys via ZrO2-induced sub-grains DOI

Meng Qin,

Xiaodan Li,

Yubo Jia

и другие.

Materials Science and Engineering A, Год журнала: 2025, Номер unknown, С. 148575 - 148575

Опубликована: Май 1, 2025

Язык: Английский

Процитировано

0

Plasma-assisted particle deposition manufacturing: Multi-functional integrated superhigh temperature thermal protection coating on niobium alloy DOI

Zhiyun Ye,

Shuqi Wang, Yongchun Zou

и другие.

Composites Part B Engineering, Год журнала: 2024, Номер 288, С. 111905 - 111905

Опубликована: Окт. 18, 2024

Язык: Английский

Процитировано

1

Hot corrosion of SiO2/NbSi2 multilayer coating on Nb alloy at 700-1100 °C DOI
Kang Zhang, Hongsheng Ding, Boya Zhang

и другие.

Journal of Alloys and Compounds, Год журнала: 2024, Номер unknown, С. 178363 - 178363

Опубликована: Дек. 1, 2024

Язык: Английский

Процитировано

1

Formation and properties of niobium silicide coatings on Nb-Ta alloy substrate DOI
Beatriz Aparecida Pinto, N. Chaia, Ana Sofia D'Oliveira

и другие.

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 29, 2024

Niobium silicide coatings have been noted in the aeronautical and aerospace industries due to their high resistance oxidation creep. Despite these desirable properties, there is a need for further improvements make them more applicable demanding scenarios. This study investigates niobium processed on Nb-22Ta alloy substrate by Double Pack Cementation method, assess influence of tantalum coatings. The pack mixture was composed 15% Si, 5% salt halide activator 80% Al 2 O 3 , with NH 4 Cl F used as activators. were at 1000°C 6 h. Analysis surfaces included correlation similar diffusion pure Nb under conditions. results obtained SEM EDS revealed low presence Ta coatings, regardless used. Coatings showed exclusive formation NbSi while those exhibited both 5 Si . Nanohardness analysis indicated hardness levels (1459 HV), different from which demonstrate much higher close surface, around 2038 HV. Furthermore, better elevated temperatures, demonstrated thermogravimetric up 1350°C. behavior confirms s that are influenced elements can be enhanced processing conditions such mixture.

Язык: Английский

Процитировано

0

HfC–HfO 2modified high/superhigh temperature thermal protection coating for superior hot corrosion resistance and anti-oxidation performance DOI Creative Commons

Zhiyun Ye,

Shuqi Wang, Shuang Yu

и другие.

Journal of Advanced Ceramics, Год журнала: 2024, Номер 14(1), С. 9221014 - 9221014

Опубликована: Дек. 5, 2024

With the advances in thrust-weight ratio, service temperature of gas turbine engines even exceeds 1500℃, which is urgent to develop high/superhigh thermal protection systems for long-term service. Niobium alloys are increasingly viewed as a promising structural material high-temperature applications due their superior mechanical strength, but "pest" catastrophic oxidation greatly restricts its further application. Herein, HfC-HfO2 modified silicide coating was prepared via an innovative method halide-activated pack cementation combined with liquid-plasma-assisted particle deposition and sintering on niobium alloys, endowing composite excellent hot corrosion resistance resistance. This multilayer characterized by synergistic combination dense NbSi2 inner layer porous outer layer, exhibiting significant improvement performance compared single coating. The corroded gain only 13.94 mg·cm-2 after time 200 h at 900℃, shows intact oxide scale surface 1500℃ 500 min. ascribed formed robust Hf-rich skeleton provided deposited can accelerate formation high stability layer/oxide scale. Besides, multiple stress release mechanisms temperatures also provide huge contributions All these merits render competitive development

Язык: Английский

Процитировано

0