Interdiffusion behavior of Mo-Si-B/Al2O3 composite coating on Nb-Si based alloy

Hou, Qingyan; Shao, Wei; Li, Meifeng; Zhou, Chungen

doi:10.1016/j.surfcoat.2020.126243

Cited by 15 publications

(2 citation statements)

References 40 publications

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“…The SEM images of typical SPS coatings are listed in Figure 5. The average surface roughness (R a ) and porosity of the sprayed Mo coating were the same [35,36]. At the same time, apparent holes and cracks were observed at the cross-sectional coating, as shown in Figure 5a,d.…”

Section: Thermal Spraying Methodsmentioning

confidence: 65%

The Protection, Challenge, and Prospect of Anti-Oxidation Coating on the Surface of Niobium Alloy

Zhang

Cui

et al. 2021

Coatings

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Niobium (Nb)-based alloys have been extensively used in the aerospace field owing to their excellent high-temperature mechanical properties. However, the inferior oxidation resistance severely limits the application of Nb-based alloys in a high-temperature, oxygen-enriched environment. Related scholars have extensively studied the oxidation protection of niobium alloy and pointed out that surface coating technology is ideal for solving this problem. Based on the different preparation methods of Nb-based alloys’ surface coatings, this article summarizes the relevant research of domestic and foreign scholars in the past 30 years, including the slurry sintering method (SS), suspension plasma spraying method (SPS), and halide activated pack cementation method (HAPC), etc. The growth mechanism and micromorphology of the coatings access by different preparation methods are evaluated. In addition, the advantages and disadvantages of various coating oxidation characteristics and coating preparation approaches are summarized. Finally, the coating’s oxidation behavior and failure mechanism are summarized and analyzed, aiming to provide valuable research references in related fields.

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Section: Thermal Spraying Methodsmentioning

confidence: 65%

The Protection, Challenge, and Prospect of Anti-Oxidation Coating on the Surface of Niobium Alloy

Zhang

Cui

et al. 2021

Coatings

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“…However, further alloying usually leads to deterioration of their mechanical properties [3,12,13]. Consequently, deposition of coatings that can form dense, adherent and slow growing oxide scales is considered an effective way to address the requirement of the enhanced oxidation resistance and high-strength of Nb−Si based alloys [14,15]. Aluminide and silicide coatings, which can produce continuous Al 2 O 3 and SiO 2 scales at high temperature, have been widely studied [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Effect of Al2O3 and SiO2 Inert-Fillers on the Microstructural Evolution and High Temperature Oxidation Resistance of B Modified Silicides Coatings Prepared by Pack Cementation Technology

Zhuo

Song

et al. 2021

Coatings

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In this study, B modified silicide coatings were prepared on Nb-Si based alloy with Al2O3 or SiO2 inert-filler by pack cementation technology. Both coatings primarily consisted of a (Nb,X)Si2 with a (Nb,X)B2 + (Nb,X)Si2 outer layer. After oxidation at 1250 °C for 100 h, the coatings showed good oxidation resistance due to the formation of a dense silica. The oxidation products of the coating prepared with Al2O3 inert-filler consisted of SiO2, TiO2 and Cr2O3, while that of the coating prepared with SiO2 inert-filler consisted of SiO2, TiO2, Cr2O3, and HfO2. The different oxidation products may be due to the different oxidation process of these two sample at initial oxidation stage.

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Anti-Corrosion Coatings for Protecting Nb-Based Alloys Exposed to Oxidation Environments: A Review

Cui

et al. 2022

Met. Mater. Int.

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Interdiffusion behavior of Mo-Si-B/Al2O3 composite coating on Nb-Si based alloy

Cited by 15 publications

References 40 publications

The Protection, Challenge, and Prospect of Anti-Oxidation Coating on the Surface of Niobium Alloy

The Protection, Challenge, and Prospect of Anti-Oxidation Coating on the Surface of Niobium Alloy

Effect of Al2O3 and SiO2 Inert-Fillers on the Microstructural Evolution and High Temperature Oxidation Resistance of B Modified Silicides Coatings Prepared by Pack Cementation Technology

Anti-Corrosion Coatings for Protecting Nb-Based Alloys Exposed to Oxidation Environments: A Review

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