+Advanced Search
Interfacial Microstructure and Properties of ZrO2 Ceramic and GH3536 Alloy Reactive Air Brazed Joints
Author:
Affiliation:

1.Tianjin Key Lab of Advanced Joining Technology,Tianjin University;2.School of Materials Science and Engineering,Hefei University of Technology

Clc Number:

Fund Project:

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    Abstract:

    ZrO2 ceramic and GH3536 alloy were successfully reactive air brazed (RAB) at 1050℃ for 30min with Ag-CuO-Al2TiO5 composite filler. The interface structure and formation mechanism of the brazing joint were analyzed. Meanwhile, the influence of the exposure test at 800 ℃ on the microstructure and properties of joints were systematically analyzed. The results showed that Al2TiO5 particles were decomposed into Al2O3 and TiO2 particles, and TiO2 reacted with ZrO2 ceramic to form the ZrTiO4 phase. The oxidation reaction occurred on the metal elements from GH3536, which reacted with Al2O3 and CuO in the brazing seam respectively to generate NiAl2O4 phase with fine distribution in the brazing seam and massive NiCuO2 phase adjacent to the spinel layer. After the ZrO2/GH3536 joint was oxidized above 1000 h at 800 ℃, NiAl2O4 in the brazing joint was distributed in blocks and while the thin layer of Cr2O3 remained stable. The elements inside the spinel layer were homogenized, the thickness of which increased significantly. The strength of the joint first decreased and then stabilized at 20 MPa with the extension of oxidation time.

    Reference
    Related
    Cited by
Get Citation

[Yang Junhao, Yang zhenwen, Wang Ying, Song Kuijing, Wang dongpo. Interfacial Microstructure and Properties of ZrO2 Ceramic and GH3536 Alloy Reactive Air Brazed Joints[J]. Rare Metal Materials and Engineering,2021,50(12):4450~4456.]
DOI:10.12442/j. issn.1002-185X.20201008

Copy
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:December 30,2020
  • Revised:January 11,2021
  • Adopted:February 03,2021
  • Online: January 09,2022
  • Published: December 24,2021