Bi-continuous composite of refractory alloy and copper and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-2019040495-A1
Application number	US-201815893862-A
Country	US
Kind code	A1
Filing date	Feb 12, 2018
Priority date	Aug 3, 2017
Publication date	Feb 7, 2019
Grant date	—

Abstract

A bi-continuous composite of a refractory alloy and copper, and a method for manufacturing the same, are provided. The method for manufacturing a bi-continuous composite of a refractory alloy and copper includes: providing an alloy melt swapping (AMS) precursor; providing a copper melt with a temperature in a range of 1085° C. to 3410° C.; immersing the AMS precursor into the copper melt; and removing the AMS precursor from the copper melt. The AMS precursor includes elements having positive and negative mixing enthalpy with copper, respectively. The AMS precursor into which the copper melt is diffused becomes a bi-continuous composite with a first phase formed from the copper and a second phase formed from the AMS precursor.

First claim

What is claimed is:

1 . A method for manufacturing a bi-continuous composite of a refractory alloy and copper, the method comprising:
providing an alloy melt swapping (AMS) precursor, the AMS precursor comprising elements having positive and negative mixing enthalpy with copper, respectively; providing a copper melt with a temperature in a range of 1085° C. to 3410° C.; immersing the AMS precursor into the copper melt, the AMS precursor into which the copper melt diffused becoming a bi-continuous composite with a first phase formed from the copper and a second phase formed from the AMS precursor; and removing the bi-continuous composite from the copper melt.

2 . The method of claim 1 , wherein in the providing of the AMS precursor, the AMS precursor has a chemical composition of A 100-x B x (where A is at least one metal selected from a group of elements I comprising Ti, Zr, and Hf, while B is at least one metal selected from a group of elements II comprising V, Cr, Mo, Nb, Ta, and W, and 5 at %≤x≤95 at %).

3 . The method of claim 2 , wherein in the immersing of the AMS precursor into the copper melt, the second phase is formed from the B.

4 . The method of claim 3 , wherein in the immersing of the AMS precursor into the copper melt, the composite has a chemical composition of Cu 100-y B y (where 5 at %≤y≤95 at %).

5 . The method of claim 1 , wherein in the providing of the AMS precursor, the AMS precursor is a complete solid solution.

6 . The method of claim 1 , wherein in the providing of the copper melt, the temperature is in a range of 1200° C. to 1800° C.

7 . The method of claim 1 , wherein in the immersing of the AMS precursor into the copper melt, the AMS precursor is immersed for 1 min to 240 h.

8 . The method of claim 1 , further comprising reusing the copper melt for manufacturing another bi-continuous composite.

9 . A bi-continuous composite of a refractory alloy and copper having a chemical composition of Cu 100-x B x (where B is at least one metal selected from a group of elements II comprising V, Cr, Mo, Nb, Ta, and W, and 5 at %≤x≤95 at %).

10 . The bi-continuous composite of claim 9 , wherein the composite comprises dendrites and at least one interdendritic region located between the dendrites, and an amount of the Cu at the interdendritic region is greater than the amount of the Cu at the dendrites.

11 . The bi-continuous composite of claim 10 , wherein the amount of the Cu at the interdendritic region is not less than 90 at % and less than 100 at % of the total Cu.

12 . The bi-continuous composite of claim 10 , wherein an amount of the B at the dendrites is greater than the amount of the B at the interdendritic region.

Assignees

• Seoul Nat Univ R&Db Foundation

Inventors

• Yoon Kooknoh
• Kim Il-Hwan
• Oh Hyun Seok
• Kim Sang Jun
• Park Eun Soo

Classifications

• C22C27/02

  Alloys based on vanadium, niobium, or tantalum · CPC title

• C22C27/00 Primary

  Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00 · CPC title

• C22C30/02

  containing copper · CPC title

• C22C1/02 Primary

  by melting {(C22C1/1036 takes precedence)} · CPC title

• C22C9/00

  Alloys based on copper · CPC title