Titanium composite for molten metal
OwnerC. Edward Eckertinventor
Life of this patent
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Abstract
Disclosed is a composite material for handling molten metal, the material having a tensile strength of greater than 30 ksi and being resistant to attack by the molten metal. The composite comprises a base layer of titanium base alloy having bonded thereto a protective refractory coating resistant to attack by the molten metal.
Claims36
A composite material for handling molten aluminum, the composite material having a tensile strength of greater than 30 ksi and being resistant to attack by said molten aluminum, the composite material comprising:
- (a) a base layer of titanium base alloy selected from alpha, beta, near-alpha and alpha-beta titanium alloys having a chilling power of less than 400 BTU.sup.2 /ft.sup.4 /hr/.degree.F. and having an expansion coefficient of less than 10.times.10.sup.-6 in/in/.degree.F.;
- (b) a bond coating applied to a surface of said base layer, the bond coating having a thickness in the range of 0.1 to 5 mils and a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree.F.;
- and
- (c) a protective refractory coating having a coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree.F. and resistant to attack by said molten aluminum, said refractory coating bonded to said bond coating and having a thickness in the range of 4 to 22 mils.
A composite material for contacting molten metal having a thermal conductivity of less than 30 BTU/ft.sup.2 /hr/.degree.F., a chilling power of less than 500 BTU.sup.2 /ft.sup.4 hr .degree.F. and resistant to attack by a molten aluminum, the composite comprising:
- (a) a base layer of titanium base alloy having a thermal coefficient of expansion of less than 5.times.10.sup.-6 in/in/.degree.F.;
- (b) a bond coating applied to a surface of said base layer, the bond coating having a thickness in the range of 0.1 to 5 mils and a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree.F.;
- and
- (c) a protective refractory coating resistant to attack by said molten metal, the refractory coating bonded to said bond coating and having an expansion coefficient of less than 5.times.10.sup.-6 in/in/.degree.F.
A composite material for handling molten aluminum having a thermal conductivity of less than 10 BTU/ft.sup.2 /hr/.degree.F., a chilling power of less than 400 BTU.sup.2 /ft.sup.4 /hr/.degree.F. and being resistant to attack by said molten aluminum, the composite comprising:
- (a) a base layer of titanium base alloy selected from the group consisting of 6242, 1100 and CP grade titanium having a thermal coefficient of expansion of less than 5.times.10.sup.-6 in/in/.degree.F.;
- (b) a bond coating of a Cr--Ni--Al or Cr--Ni alloy applied to a surface of said base layer, the bond coating having a thickness in the range of 0.1 to 5 mils and a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree.F.;
- and
- (c) a protective refractory coating selected from one of a material consisting of Al.sub.2 O.sub.3, ZrO.sub.2, Y.sub.2 O.sub.3 stabilized ZrO.sub.2, and Al.sub.2 O.sub.3 --TiO.sub.2 resistant to attack by said molten aluminum, the refractory coating bonded to said base layer and having an expansion coefficient of less than 5.times.10.sup.-6 in/in/.degree.F.
A composite material for handling molten aluminum, being resistant to attack by the molten aluminum and having a thermal conductivity of less than 30 BTU/ft.sup.2 /hr/.degree.F. and a chilling power of less than 400 BTU.sup.2 /ft.sup.4 /hr/.degree.F., the composite material comprising:
- (a) a base layer of titanium base alloy selected from 6242, 1100 and CP grade titanium and having a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree.F.;
- (b) a bond coating of a Cr--Ni--Al or Cr--Ni alloy applied to a surface of said base layer, the bond coating having a thickness in the range of 0.1 to 5 mils and a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree.F.;
- and
- (c) protective Al.sub.2 O.sub.3 refractory coating bonded to said base layer, the refractory coating having a thickness in the range of 0.5 to 22 mils and an expansion coefficient of less than 5.times.10.sup.-6 in/in/.degree.F.
A composite material for handling molten aluminum, being resistant to attack by the molten aluminum and having a thermal conductivity of less than 30 BTU/ft.sup.2 /hr/.degree.F. and a chilling power of less than 400 BTU.sup.2 /ft.sup.4 hr .degree.F., and capable of being resistively heated, the composite material comprising:
- (a) a base layer of titanium base alloy 6242 having a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree.F.;
- (b) a bond coating of a Cr--Ni--Al alloy applied to a surface of said base layer, the bond coating having a thickness in the range of 0.1 to 5 mils and a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree. F.;
- and
- (c) a protective refractory coating of Al.sub.2 O.sub.3 bonded to said bond coating, said refractory coating having a thickness in the range of 5 to 22 mils.
A composite material for containing molten metal, the composite material having a tensile strength of greater than 30 ksi resistant to attack by said molten metal, the composite material comprising:
- (a) a base layer of titanium base alloy selected from alpha, beta, near-alpha and alpha-beta titanium alloys having a chilling power of less than 400 BTU.sup.2 /ft.sup.4 /hr/.degree.F. and having an expansion coefficient of less than 10.times.10.sup.-6 in/in/.degree.F.;
- (b) a bond coating applied to a surface of said base layer, the bond coating having a thickness in the range of 0.1 to 5 mils and a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree.F.;
- and
- c) a protective refractory coating having a coefficient of expansion of less than 15.times.10.sup.-6 in/in/.degree.F. and resistant to attack by said molten metal, said refractory coating bonded to said bond coating and having a thickness in the range of 4 to 22 mils.
A composite material for containing molten metal having a thermal conductivity of less than 30 BTU/ft.sup.2 /hr/.degree.F., a chilling power of less than 400 BTU.sup.2 /ft.sup.4 /hr/.degree.F. and resistant to attack by a molten metal selected from the group consisting of aluminum, zinc, lead, copper, steel and magnesium, the composite comprising:
- (a) a base layer of titanium base alloy selected from alpha, beta, near-alpha and alpha-beta titanium alloys having a chilling power of less than 400 BTU.sup.2 /ft.sup.4 /hr/.degree.F. and having an expansion coefficient of less than 10.times.10.sup.-6 in/in/.degree.F.;
- (b) a bond coating applied to a surface of said base layer, the bond coating having a thickness in the range of 0.1 to 5 mils and a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree.F.;
- and
- (c) a protective refractory coating having a coefficient of expansion of less than 5.times.10.sup.-6 in/in/.degree.F. and resistant to attack by said molten metal, said refractory coating bonded to said bond coating and having a thickness in the range of 4 to 22 mils.
A composite material for containing molten aluminum having a thermal conductivity of less than 10 BTU/ft.sup.2 /hr/.degree.F., and a chilling power of less than 400 BTU.sup.2 /ft.sup.4 hr .degree.F. and resistant to attack by said molten aluminum, the composite comprising:
- (a) a base layer of titanium base alloy having a thermal coefficient of expansion of less than 5.times.10.sup.-6 in/in/.degree.F.;
- (b) a bond coating of a Cr--Ni--Al or Cr--Ni alloy applied to a surface of said base layer, the bond coating having a thickness in the range of 0.1 to 5 mils and a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree.F.;
- and
- (c) a protective refractory coating selected from one of a material comprising Al.sub.2 O.sub.3, ZrO.sub.2, Y.sub.2 O.sub.3 stabilized ZrO.sub.2, and Al.sub.2 O.sub.3 --TiO.sub.2 resistant to attack by said molten aluminum, the refractory, coating bonded to said base layer and having an expansion coefficient of less than 5.times.10.sup.-6 in/in/.degree.F.
A composite material for containing molten aluminum and being resistant to attack by the molten aluminum and having a thermal conductivity of less than 30 BTU/ft.sup.2 /hr/.degree.F. and a chilling power of less than 400 BTU.sup.2 /ft.sup.4 /hr/.degree.F., the composite material comprising:
- (a) a base layer of titanium base alloy selected from 6242, 1100 and CP grade titanium and having a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree.F.;
- (b) a bond coating applied to a surface of said base layer, the bond coating having a thickness in the range of 0.1 to 5 mils and a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree.F.;
- and
- (c) a protective Al.sub.2 O.sub.3 refractory coating bonded to said base layer, the refractory coating having a thickness in the range of 5 to 22 mils and an expansion coefficient of less than 5.times.10.sup.-6 in/in/.degree.F.
A composite material for containing molten aluminum, being resistant to attack by the molten aluminum and having a thermal conductivity of less than 15 BTU/ft.sup.2 /hr/.degree.F., a chilling power of less than 400 BTU.sup.2 /ft.sup.4 hr .degree.F. and capable of being resistively heated, the composite material comprising:
- (a) a base layer of titanium base alloy 6242 having a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree.F.;
- (b) a bond coating of a Cr--Ni--Al alloy applied to a surface of said base layer, the bond coating having a thickness in the range of 0.1 to 5 mils and a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree. F.;
- and
- (c) a protective refractory coating of Al.sub.2 O.sub.3 bonded to said bond coating, said bond coating having a thickness in the range of 5 to 22 mils.
A composite material for immersing in molten metal, the composite material having a tensile strength of greater than 30 ksi resistant to attack by said molten metal, the composite material comprising:
- (a) a base layer of titanium base alloy selected from alpha, beta, near-alpha and alpha-beta titanium alloys having a chilling power of less than 400 BTU.sup.2 /ft.sup.4 /hr/.degree.F. and having an expansion coefficient of less than 15.times.10.sup.-6 in/in/.degree.F.;
- (b) a bond coating applied to a surface of said base layer, the bond coating having a thickness in the range of 0.1 to 5 mils and a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree.F.;
- and
- (c) a protective refractory coating resistant to attack by said molten metal bonded to said base layer of titanium.
A composite material for immersing in molten metal having a thermal conductivity of less than 30 BTU/ft.sup.2 /hr/.degree.F., a chilling power of less than 300 BTU.sup.2 /ft.sup.4 hr .degree.F. and resistant to attack by a molten metal selected from the group consisting of aluminum, zinc, lead, copper, steel and magnesium, the composite comprising:
- (a) a base layer of titanium base alloy having a thermal coefficient of expansion of less than 5.times.10.sup.-6 in/in/.degree.F.;
- (b) a bond coating applied to a surface of said base layer, the bond coating having a thickness in the range of 0.1 to 5 mils and a thermal coefficient of expansion of less than 5.times.10.sup.-6 in/in/.degree.F.;
- and
- (c) a protective refractory coating resistant to attack by said molten metal, the refractory coating bonded to said base layer and having an expansion coefficient of less than 5.times.10.sup.-6 in/in/.degree.F.
A composite material for immersing in molten aluminum having a thermal conductivity of less than 10 BTU/ft2/hr/.degree.F., a chilling power of less than 300 BTU.sup.2 /ft.sup.4 hr .degree.F. and resistant to attack by said molten aluminum, the composite comprising:
- (a) a base layer of titanium base alloy having a thermal coefficient of expansion of less than 5.times.10.sup.-6 in/in/.degree.F.;
- (b) a bond coating of a Cr--Ni--Al or Cr--Ni alloy applied to a surface of said base layer, the bond coating having a thickness in the range of 0.1 to 5 mils and a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree.F.;
- and
- (c) a protective refractory coating selected from one of a material consisting of Al.sub.2 O.sub.3, ZrO.sub.2, Y.sub.2 O.sub.3 stabilized ZrO.sub.2, and Al.sub.2 O.sub.3 --TiO.sub.2 resistant to attack by said molten aluminum, the refractory coating bonded to said base layer and having an expansion coefficient of less than 5.times.10.sup.-6 in/in/.degree.F.
A composite material for immersing in molten aluminum and being resistant to attack by the molten aluminum, having a thermal conductivity of less than 30 BTU/ft.sup.2 /hr/.degree.F., a chilling power of less than 300 BTU.sup.2 /ft.sup.4 /hr/.degree.F., the composite material comprising:
- (a) a base layer of titanium base alloy selected from 6242, 1100 and CP grade titanium and having a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree.F.;
- (b) a bond coating applied to a surface of said base layer, the bond coating having a thickness in the range of 0.1 to 5 mils and a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree.F.;
- and
- (c) a protective Al.sub.2 O.sub.3 refractory coating bonded to said base layer, the refractory coating having a thickness in the range of 5 to 22 mils and an expansion coefficient of less than 5.times.10.sup.-6 in/in/.degree.F.
A composite material for immersing in molten aluminum, being resistant to attack by the molten aluminum, having a thermal conductivity of less than 15 BTU/ft.sup.2 /hr/.degree.F., a chilling power of less than 300 BTU.sup.2 /ft.sup.4 hr .degree.F. and capable of being resistively heated, the composite material comprising:
- (a) a base layer of titanium base alloy 6242 having a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree.F.;
- (b) a bond coating of a Cr--Ni--Al alloy applied to a surface of said base layer, the bond coating having a thickness in the range of 0.1 to 5 mils and a thermal coefficient of expansion of less than 10.times.10.sup.-6 in/in/.degree. F.;
- and
- (c) a protective refractory coating of Al.sub.2 O.sub.3 bonded to said bond coating, said refractory coating having a thickness in the range of 5 to 22 mils.
Dependencies are inferred from the claim text.