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Casted heat sink and tube cold plate with peritectically reacted metals

  • US 8,245,401 B2
  • Filed: 11/05/2009
  • Issued: 08/21/2012
  • Est. Priority Date: 07/19/2005
  • Status: Expired due to Fees
First Claim
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1. A cold plate apparatus for facilitating cooling of a heat generating electronics component, the cold plate apparatus comprising:

  • a tube comprising a first metal, the tube having a first end and a second end with a heat transfer region disposed therebetween;

    a casted heat sink member comprising a second metal surrounding the heat transfer region of the tube, with the first end and the second end of the tube residing outside of the casted heat sink member, wherein the second metal has a lower melting point than the first metal, and the first metal and the second metal reacted peritectically such that a metallurgical bond exists between the tube and the heat sink member in the heat transfer region of the tube; and

    wherein the metallurgical bond comprises an alloy layer between the tube and the casted heat sink member in the heat transfer region of the tube, the alloy layer having been formed during casting of the heat sink member by the first metal of the tube and the second metal of the heat sink member reacting peritectically, wherein a thickness of the alloy layer was minimized during casting of the heat sink member to enhance a heat transfer characteristic of the metallurgical bond between the tube and the heat sink member in the heat transfer region of the tube, the thickness of the alloy layer being less than 10 μ

    m.

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