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Joining and wetting of CaO-stabilized ZrO 2 with Al-Cu alloys

Ueki, M. ; Naka, M. ; Okamoto, I.

Journal of Materials Science, 1988, Vol.23(8), pp.2983-2988 [Tạp chí có phản biện]

ISSN: 0022-2461 ; E-ISSN: 1573-4803 ; DOI: 10.1007/BF00547479

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  • Nhan đề:
    Joining and wetting of CaO-stabilized ZrO 2 with Al-Cu alloys
  • Tác giả: Ueki, M. ; Naka, M. ; Okamoto, I.
  • Chủ đề: Specialty Metals Industry -- Nutritional Aspects ; Specialty Metals Industry -- Mechanical Properties
  • Là 1 phần của: Journal of Materials Science, 1988, Vol.23(8), pp.2983-2988
  • Mô tả: The contact angles of molten Al-Cu alloys on CaO-stabilized ZrO 2 have been measured using a sessile drop technique at 1373 K under a vacuum. The work of adhesion, W ad , of an alloy against ZrO 2 was evaluated from the equilibrium contact angle of the alloy. The W ad values Al-Cu alloys with copper contents up to 10 at% are the same or slightly higher than the value of 1.25 J m −2 for pure aluminium. On further increase in copper content, W ad gradually decreases to 0.8 J m −2 for pure copper at 1373 K. The general trend in the work of adhesion against copper content of Al-Cu alloys is in accordance with the copper-content dependence of the joining strength of ZrO 2 joints brazed with the Al-Cu alloys. A ZrO 2 joint brazed with Al-1.7 at% Cu filler provides the maximum fracture strength of 105 MPa at room temperature, and this improved strength of ZrO 2 is maintained at elevated temperatures up to 773 K. The joining strength of a ZrO 2 joint brazed with an Al-Cu alloy is dominated by the mechanical properties of the alloy in addition to the wettability of the alloy against ZrO 2 .
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0022-2461 ; E-ISSN: 1573-4803 ; DOI: 10.1007/BF00547479

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