The effect of heat treatment on the tensile strength of the iridium-coated carbon fiber

Бакланова, Н. И.; Лозанов, В. В.; Morozova, N. B.; Титов, А. Т.

doi:10.1016/j.tsf.2015.02.042

Cited by 9 publications

(7 citation statements)

References 22 publications

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“…As shown in Figure 5d, the surface of PyC is almost coated with dense WC, which can prevent PyC from coming into direct contact with oxidizing atmosphere. [ 43 ] The EDS results of marked areas in Figure 5c,d are shown in e,f, respectively. Based on the atom ratios of C and W, the W content in W 2 C phases was about 2.63 at%, and the C content in WC phases was about 20.91 at%.…”

Section: Resultsmentioning

confidence: 99%

Oxidative Ablation Behavior of W‐Coated C/C Composites Prepared by Chemical Vapor Deposition with Heat Treatment

et al. 2023

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Section: Resultsmentioning

confidence: 99%

Oxidative Ablation Behavior of W‐Coated C/C Composites Prepared by Chemical Vapor Deposition with Heat Treatment

et al. 2023

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“…The current domestic research on high-temperature oxidation-resistant coatings mainly focuses on ZrO 2 and Al 2 O 3 coatings [15][16][17][18], as they have high melting points, low coefficients of thermal expansion, and good thermal compatibility with the matrix, which are essential characteristics for hightemperature oxidation-resistant coatings. However, a substantial difference exists in the thermal expansion coefficients between ZrO 2 , Al 2 O 3 , and Ir, resulting in poor thermal compatibility between them [19,20]. Furthermore, ZrO 2 will transition from a tetragonal phase t to a monoclinic phase m at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

Oxidation Resistance of Ir/HfO2 Composite Coating Prepared by Chemical Vapor Deposition: Microstructure and Elemental Migration

Zhu,

Li,

Cai

et al. 2024

Coatings

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In this study, a HfO2 coating was developed on an Ir matrix using a customized open-tube airflow, cold-wall chemical vapor deposition instrument. The preparation process and structure of the as-prepared coating were investigated to gain insights into its characteristics. The HfO2 coating effectively prevents direct contact between Ir and O, leading to a reduction in the oxidation rate of Ir. Furthermore, defects such as micropores and cracks generated during sealed oxidation erosion contribute to Ir’s decelerated oxidation failure. The as-prepared HfO2 coating exhibits low thermal conductivity and a high heat radiation rate, reducing the coating’s surface temperature. These characteristics significantly enhance adversity tolerance and increase the working temperature of the coating. Moreover, the as-prepared HfO2 coating can serve as a diffusion barrier, blocking both the direct contact of O with the Ir coating and the diffusion of other elements to the Ir coating. As a result, the rates of diffusion of other elements to the Ir coating are reduced.

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“…Precious metal pretreatment is characterized by a high cost and cumbersome process [11][12][13], whereas the preparation of copper-nickel mixed colloid catalyst for carbon fiber coating is simple. Compared with the existing technology, the cost of using precious metals (e.g., palladium, platinum, and silver), and other precious metals as catalysts is less than one-tenth of their cost.…”

Section: Introductionmentioning

confidence: 99%

Study on new process of electroless copper plating pretreatment on carbon fiber surface

Wang

2023

Mater. Res. Express

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In general, conventional carbon fiber surface pretreatment, with palladium, silver, and other precious metals as activators, increases its surface activity by initiating redox reactions for metallization, whereas it exhibits a high cost and poor economy. In this study, copper-nickel mixed colloids with low cost served as the activators, and sodium borohydride (NaBH4) and sodium hydroxide (NaOH) were employed as sensitizing reducing agents to successfully plate copper on the surface of carbon fibers. Subsequently, the morphology of the treated samples was characterized through SEM and XPS to explore the pretreatment process of the carbon fiber surface. The results indicated that the carbon fiber exhibited the optimal debinding effect at 55°C and the heating time was longer than 120 min. The result indicated that coarsening effect of 65% concentrated nitric acid was the optimal. The activation effect of copper-nickel mixed colloid was the optimal, and the surface quality of the coating was the optimal.

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The effect of heat treatment on the tensile strength of the iridium-coated carbon fiber

Cited by 9 publications

References 22 publications

Oxidative Ablation Behavior of W‐Coated C/C Composites Prepared by Chemical Vapor Deposition with Heat Treatment

Oxidative Ablation Behavior of W‐Coated C/C Composites Prepared by Chemical Vapor Deposition with Heat Treatment

Oxidation Resistance of Ir/HfO2 Composite Coating Prepared by Chemical Vapor Deposition: Microstructure and Elemental Migration

Study on new process of electroless copper plating pretreatment on carbon fiber surface

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