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Joining of Silicon Carbide Using MgO-Al2O3-SiO2 Filler

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Abstract

Pressureless sintered SiC specimens were joined using MgO-Al2O3-SiO2 (MAS) filler. MAS filler showed excellent behaviour of wetting on SiC substrate above 1480 °C, and the wettability was much influenced by the joining atmosphere. The joining was carried out at 1500 and 1600 °C for 30 min in Ar atmosphere. The flexural strength of the joined specimen showed 342–380 MPa up to 800 °C. However, the flexural strength of the joined specimen decreased to about 80 MPa at 900 °C due to softening of the joint interlayer. The results of the XRD and WDS showed that the reaction between SiC and the MAS filler produced the oxycarbide glass.

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Authors and Affiliations

  1. Department of Ceramic Engineering,, Yonsei University,, Seoul,, 120-749,, Korea

    H. L. Lee, S. W. Nam, B. S. Hahn & D. Han

  2. Research Institute of Industrial Science and Technology (RIST),, Pohang,, 790-330,, Korea

    B. H. Park

Authors
  1. H. L. Lee
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  2. S. W. Nam
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  3. B. S. Hahn
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  4. B. H. Park
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  5. D. Han
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Lee, H.L., Nam, S.W., Hahn, B.S. et al. Joining of Silicon Carbide Using MgO-Al2O3-SiO2 Filler. Journal of Materials Science 33, 5007–5014 (1998). https://doi.org/10.1023/A:1004411108502

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