<trans-title xml:lang="en">Microstructure and Corrosion Behavior of Brazed Joints of SiC/SiC Composites and Hastelloy N Alloy Using Cu-Ni Alloy</trans-title>

Hongda WANG; Qian FENG; Xiao YOU; Haijun ZHOU; Jianbao HU; Yanmei KAN; Xiaowu CHEN; Shaoming DONG

doi:10.15541/jim20210381

Journal of Inorganic Materials, Volume. 37, Issue 4, 452(2022)

Microstructure and Corrosion Behavior of Brazed Joints of SiC/SiC Composites and Hastelloy N Alloy Using Cu-Ni Alloy

Hongda WANG1...2, Qian FENG3, Xiao YOU1,2,4, Haijun ZHOU1,2,*, Jianbao HU1,2, Yanmei KAN1,2, Xiaowu CHEN1,2, and Shaoming DONG12 |Show fewer author(s)

Author Affiliations

¹1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

²2. Structural Ceramics and Composites Engineering Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

³3. Analysis and Testing center, Donghua University, Shanghai 201600, China

⁴4. University of Chinese Academy of Sciences, Beijing 100039, China

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Figures & Tables(9)

1. Schematic illustration of the sandwich-like structure of joint

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$SEM images of brazing joints obtained at (a) 1090, (b) 1110 ℃, (c) and (d) 1130 ℃, correspoding EDS analyses (atom fraction) (e) of the point in image (d)$

2. SEM images of brazing joints obtained at (a) 1090, (b) 1110 ℃, (c) and (d) 1130 ℃, correspoding EDS analyses (atom fraction) (e) of the point in image (d)

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3. Elemental distribution analyses by EDS of joint obtained at 1130 ℃

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4. Gibbs free energy of formation of candidates calculated using HSC Chemistry 5.11 computer software and its associated databases

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5. SEM image of microstructure and EDS line-scan analyses in SiC/SiC composites near joint obtained at 1150 ℃

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6. XRD patterns of joints before and after corrosion

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7. Appearance images and SEM images of microstructure of joints before and after corrosion at 800 ℃ for 100 h

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8. Elemental distribution analyses by EDS of joint obtained at 1130 ℃ after corrosion at 800 ℃ for 100 h

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Table 1.
Content of main metal impurities in fluoride salts before and after corrosion (10^-4% in mass)
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Table 1.
Content of main metal impurities in fluoride salts before and after corrosion (10^-4% in mass)
Element Before corrosion After corrosion
Ni 10 20
Cr 20 210
Fe 30 40
Mo <10 <10

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Hongda WANG, Qian FENG, Xiao YOU, Haijun ZHOU, Jianbao HU, Yanmei KAN, Xiaowu CHEN, Shaoming DONG. Microstructure and Corrosion Behavior of Brazed Joints of SiC/SiC Composites and Hastelloy N Alloy Using Cu-Ni Alloy[J]. Journal of Inorganic Materials, 2022, 37(4): 452

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Paper Information

Category: RESEARCH LETTER

Received: Jun. 18, 2021

Accepted: --

Published Online: Jan. 10, 2023

The Author Email: ZHOU Haijun (zhouhj00000@mail.sic.ac.cn)

DOI:10.15541/jim20210381

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. Content of main metal impurities in fluoride salts before and after corrosion (10-4% in mass)

Table 1. Content of main metal impurities in fluoride salts before and after corrosion (10-4% in mass)

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Table 1.
Content of main metal impurities in fluoride salts before and after corrosion (10^-4% in mass)

Table 1.
Content of main metal impurities in fluoride salts before and after corrosion (10^-4% in mass)