Porous nanostructured ZrO2 coatings prepared by plasma spraying

Cui, Yu; Hu, Zhongchao; Ma, Yanlin; Yang, Yong; Zhao, Ce-ce; Ran, Yu-tong; Gao, Pengyue; Wang, Lei; Yao, Dong; Ding, Yan

doi:10.1016/j.surfcoat.2019.02.059

Cited by 21 publications

(10 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, ZrO 2 has good chemical stabilization, toughness, and matched TEC with Al 2 O 3. 21 Thus, a polycrystalline ZrO 2 buffer layer may weaken the thermal stress, and possibly eliminate falling off of the CrN films.…”

Section: ■ Introductionmentioning

confidence: 99%

Annealing Effects on the Grain Growth and Electrical Properties of ZrO₂ Buffered Chromium Nitride Thin Films

Tang

Wei

et al. 2019

Crystal Growth & Design

View full text Add to dashboard Cite

Pure chromium nitride thin films were deposited on a ZrO2 layer buffered oxide ceramic substrate by the chemical solution deposition method. The effects of annealing temperature on their microstructure and electrical properties have been investigated. Using the buffer layer, the cracks and falling off caused by dewetting and/or strain resulted from the large thermal expansion coefficient mismatched substrate are avoided, the nitrogen content in the films is increased via inhibiting oxygen diffusion from the substrate at elevated temperature, and the lowest annealing temperature required is reduced. All the films show semiconductor behavior, and their resistivity and phase transition temperature increase initially and then decrease with increasing annealing temperature, which is related to the varied nitrogen content. These results suggest that a suitable buffer layer will not only provide a facile route with low synthesis temperature but also can effectively control the nitrogen content for the solution-derived metal nitride thin films.

show abstract

Section: ■ Introductionmentioning

confidence: 99%

Annealing Effects on the Grain Growth and Electrical Properties of ZrO₂ Buffered Chromium Nitride Thin Films

Tang

Wei

et al. 2019

Crystal Growth & Design

View full text Add to dashboard Cite

show abstract

“…A considerable number of pores are presented at the coating/substrate interface for the as-sprayed coating sample (Figure 2a), indicating a mechanical interlocking between the coating and substrate [23]. The pores at the coating/substrate interface are produced by the sandblasting and the stacking of in-flight particles [32]. Therefore, pores are widely found in the as-sprayed NiCrBSi coating [33][34][35].…”

Section: Analysis Of the Pores At The Coating/substrate Interfacesmentioning

confidence: 98%

A New Method for Evaluating the Bond Strength of Plasma-Sprayed NiCrBSi Coatings

Chen

Liu

Xuan

et al. 2022

Metals

View full text Add to dashboard Cite

The bond strength is a critical consideration for the plasma-sprayed NiCrBSi coatings. However, the conventional methods for testing the bond strength of NiCrBSi coatings always cost time and money. If there is a simple method that could predict the bond strength of the prepared NiCrBSi coatings without destroying the coatings, it would be significantly beneficial for industrial applications. In this work, a new method was proposed based on the total areas of the interfacial pores for the NiCrBSi coatings. The NiCrBSi coating was prepared by plasma spraying technology and the as-sprayed coating was subsequently remelted by plasma arc using the powers of 20 kW, 25 kW, and 30 kW, respectively. The interfacial microstructures, the size distributions and total areas of the interfacial pores, interfacial hardness, and bond strength of all prepared coating samples were investigated. After remelting, the number and the total area of interfacial pores decrease with increasing the remelting power. Correspondingly, the interfacial hardness and bond strength of coatings increase with increasing the remelting power The bond strength of coatings basically has a linear relationship with the total area of interfacial pores. The built relationship may be used to predict the bond strength of NiCrBSi coatings.

show abstract

“…A difference between the traditional ZrO 2 coatings and nanostructured ZrO 2 coatings may have a large influence on the properties of the final material. The research data reveal that the nano structure of ZrO 2 has improved the properties of the material with higher toughness, lower thermal conductivity, higher bonding strength, and higher wear resistance [84]. Over the years, there has been interest regarding the use of zirconia as fully stabilized zirconia, partially stabilized zirconia and tetragonal zirconia polygonal [83].…”

Section: Zirconium Diboride/silicon Carbide (Zrb 2 /Sic) Compositesmentioning

confidence: 99%

Ceramic Composite Materials Obtained by Electron-Beam Physical Vapor Deposition Used as Thermal Barriers in the Aerospace Industry

et al. 2020

View full text Add to dashboard Cite

This paper is focused on the basic properties of ceramic composite materials used as thermal barrier coatings in the aerospace industry like SiC, ZrC, ZrB 2 etc., and summarizes some principal properties for thermal barrier coatings. Although the aerospace industry is mainly based on metallic materials, a more attractive approach is represented by ceramic materials that are often more resistant to corrosion, oxidation and wear having at the same time suitable thermal properties. It is known that the space environment presents extreme conditions that challenge aerospace scientists, but simultaneously, presents opportunities to produce materials that behave almost ideally in this environment. Used even today, metal-matrix composites (MMCs) have been developed since the beginning of the space era due to their high specific stiffness and low thermal expansion coefficient. These types of composites possess properties such as high-temperature resistance and high strength, and those potential benefits led to the use of MMCs for supreme space system requirements in the late 1980s. Electron beam physical vapor deposition (EB-PVD) is the technology that helps to obtain the composite materials that ultimately have optimal properties for the space environment, and ceramics that broadly meet the requirements for the space industry can be silicon carbide that has been developed as a standard material very quickly, possessing many advantages. One of the most promising ceramics for ultrahigh temperature applications could be zirconium carbide (ZrC) because of its remarkable properties and the competence to form unwilling oxide scales at high temperatures, but at the same time it is known that no material can have all the ideal properties. Another promising material in coating for components used for ultra-high temperature applications as thermal protection systems is zirconium diboride (ZrB 2 ), due to its high melting point, high thermal conductivities, and relatively low density. Some composite ceramic materials like carbon-carbon fiber reinforced SiC, SiC-SiC, ZrC-SiC, ZrB 2 -SiC, etc., possessing low thermal conductivities have been used as thermal barrier coating (TBC) materials to increase turbine inlet temperatures since the 1960s. With increasing engine efficiency, they can reduce metal surface temperatures and prolong the lifetime of the hot sections of aero-engines and land-based turbines.

show abstract

Porous nanostructured ZrO2 coatings prepared by plasma spraying

Cited by 21 publications

References 20 publications

Annealing Effects on the Grain Growth and Electrical Properties of ZrO₂ Buffered Chromium Nitride Thin Films

Annealing Effects on the Grain Growth and Electrical Properties of ZrO₂ Buffered Chromium Nitride Thin Films

A New Method for Evaluating the Bond Strength of Plasma-Sprayed NiCrBSi Coatings

Ceramic Composite Materials Obtained by Electron-Beam Physical Vapor Deposition Used as Thermal Barriers in the Aerospace Industry

Contact Info

Product

Resources

About

Porous nanostructured ZrO2 coatings prepared by plasma spraying

Cited by 21 publications

References 20 publications

Annealing Effects on the Grain Growth and Electrical Properties of ZrO2 Buffered Chromium Nitride Thin Films

Annealing Effects on the Grain Growth and Electrical Properties of ZrO2 Buffered Chromium Nitride Thin Films

A New Method for Evaluating the Bond Strength of Plasma-Sprayed NiCrBSi Coatings

Ceramic Composite Materials Obtained by Electron-Beam Physical Vapor Deposition Used as Thermal Barriers in the Aerospace Industry

Contact Info

Product

Resources

About

Annealing Effects on the Grain Growth and Electrical Properties of ZrO₂ Buffered Chromium Nitride Thin Films

Annealing Effects on the Grain Growth and Electrical Properties of ZrO₂ Buffered Chromium Nitride Thin Films