The present disclosure provides a composite anode unit, comprising: a metal core rod; a metal layer coated on the metal core, wherein the metal layer is lead or lead alloy; a conductive ceramic layer coated on the metal layer, wherein the conductive ceramic layer comprises -PbO.sub.2Al.sub.2O.sub.3 composite oxide; an active ceramic layer is coated on the conductive ceramic layer, wherein the active ceramic layer comprises -MnO.sub.2Ti.sub.4O.sub.7 composite oxide. Methods for preparing the composite anode unit and an anode plate made from the composite anode unit are also provided.

The present disclosure provides a composite anode unit, comprising: a metal core rod; a metal layer coated on the metal core, wherein the metal layer is lead or lead alloy; a conductive ceramic layer coated on the metal layer, wherein the conductive ceramic layer comprises -PbO.sub.2Al.sub.2O.sub.3 composite oxide; an active ceramic layer is coated on the conductive ceramic layer, wherein the active ceramic layer comprises -MnO.sub.2Ti.sub.4O.sub.7 composite oxide. Methods for preparing the composite anode unit and an anode plate made from the composite anode unit are also provided.

One method for producing a bimetallic tubular component comprises hot isostatic pressing an assembly comprising two concentrically-positioned tubes including an inner tube comprising a corrosion-resistant nickel alloy, and an outer tube comprising a steel alloy, thereby forming a bimetallic tubular preform. The bimetallic tubular preform is flowformed, thereby forming a bimetallic tubular component comprising an inner corrosion-resistant nickel alloy layer and an outer steel alloy layer.

One method for producing a bimetallic tubular component comprises hot isostatic pressing an assembly comprising two concentrically-positioned tubes including an inner tube comprising a corrosion-resistant nickel alloy, and an outer tube comprising a steel alloy, thereby forming a bimetallic tubular preform. The bimetallic tubular preform is flowformed, thereby forming a bimetallic tubular component comprising an inner corrosion-resistant nickel alloy layer and an outer steel alloy layer.

One aspect relates to a method for manufacturing a composite wire, including providing a first part in form of a rod, providing a second part in form of a tube surrounding the rod at least partially to form a rod-tube assembly, providing a clad part in form of a cylinder surrounding the rod-tube assembly at least partially to form a cladded rod-tube assembly, and extruding the cladded rod-tube assembly to form the composite wire. The second part includes an alloy comprising the following alloy components: a) Cr in the range from about 10 to about 30 wt. %; b) Ni in the range from about 20 to about 50 wt. %; c) Mo in the range from about 2 to about 20 wt. %; d) Co in the range from about 10 to about 50 wt. %; wherein the Al content of the alloy is less than about 0.01 wt. %; wherein each wt. % is based on the total weight of the alloy.

One aspect relates to a method for manufacturing a composite wire, including providing a first part in form of a rod, providing a second part in form of a tube surrounding the rod at least partially to form a rod-tube assembly, providing a clad part in form of a cylinder surrounding the rod-tube assembly at least partially to form a cladded rod-tube assembly, and extruding the cladded rod-tube assembly to form the composite wire. The second part includes an alloy comprising the following alloy components: a) Cr in the range from about 10 to about 30 wt. %; b) Ni in the range from about 20 to about 50 wt. %; c) Mo in the range from about 2 to about 20 wt. %; d) Co in the range from about 10 to about 50 wt. %; wherein the Al content of the alloy is less than about 0.01 wt. %; wherein each wt. % is based on the total weight of the alloy.

A method of producing a bimetallic tubular component includes providing a first tubular workpiece having an inner diameter and a second tubular workpiece having an outer diameter. The first and second tubular workpieces have dissimilar cold-working processing parameters. The method further includes diffusion bonding the inner diameter of the first tubular workpiece to the outer diameter of the second tubular workpiece, and flowforming the diffusion bonded tubular workpieces to form the bimetallic tubular component.

A method of producing a bimetallic tubular component includes providing a first tubular workpiece having an inner diameter and a second tubular workpiece having an outer diameter. The first and second tubular workpieces have dissimilar cold-working processing parameters. The method further includes diffusion bonding the inner diameter of the first tubular workpiece to the outer diameter of the second tubular workpiece, and flowforming the diffusion bonded tubular workpieces to form the bimetallic tubular component.

The present invention provides an isothermal processing method for making an isothermal processed copper clad aluminum composite comprising: providing an aluminum component and a copper component; cleaning the aluminum component and shape finishing the aluminum component; extruding the aluminum component into a core aluminum billet; cleaning the copper component; transforming the copper component into a copper cladding layer; cladding longitudinal and circumferential surfaces of the core aluminum billet with the copper cladding layer and molding the core aluminum billet and the copper cladding layer together to form a copper cladded aluminum billet; and transforming the copper cladded aluminum billet into an isothermal processed copper cladded aluminum composite through isothermal rolling and annealing. The present invention also provides an isothermal processed copper cladded aluminum composite and a system for manufacturing an isothermal processed copper cladded aluminum composite.

A shear assisted extrusion process for producing cladded materials wherein a cladding material and a material to be cladded are placed in sequence with the cladded material positioned to contact a rotating scroll face first and the material to be cladded second. The two materials are fed through a shear assisted extrusion device at a preselected feed rate and impacted by a rotating scroll face to generate a cladded extrusion product. This process allows for increased through wall strength and decreases the brittleness in formed structures as compared to the prior art.