Shaping degradable material
A method can include pressing material to form a billet where the material includes aluminum and one or more metals selected from a group consisting of alkali metals, alkaline earth metals, group 12 transition metals, and basic metals having an atomic number equal to or greater than 31; extruding the billet to form extrudate; and forming a degradable component from the extrudate.
1. A method comprising:
pressing a plurality of particulate materials to form a billet, wherein the plurality of particulate materials comprises aluminum and one or more metals selected from a group consisting of alkali metals; alkaline earth metals; group 12 transition metals; and basic metals having an atomic number equal to or greater than 31,
wherein at least one of the particulate materials is reactive and degradable in an aqueous solution;
extruding the billet to form an extrudate; and
forming a degradable component from the extrudate,
wherein the extruding step comprises controlling a temperature-time profile of the extruding step by controlling a ram speed of an extruder ram during the extruding step such that incipient melting does not occur to an extent to alter surface roughness of the extrudate.
2. The method of claim 1 wherein the at least one surface of the billet comprises a peripheral surface and wherein the extruding step further comprises positioning the peripheral surface of the billet adjacent to a bore surface of a bore of an extruder.
3. The method of claim 1 , further comprising: outgassing the plurality of particulate materials prior to the pressing step, wherein the outgassing removes absorbed moisture from the plurality of particulate materials.
4. The method of claim 1 , comprising processing the material via at least one severe plastic deformation process prior to the pressing.
5. The method of claim 4 wherein the at least one severe plastic deformation process comprises cryomilling.
6. The method of claim 5 , wherein the cryomilling generates dispersoids that comprise oxides formed via gas atomization of a melt.
7. The method of claim 5 wherein the cryomilling utilizes balls that generate dispersoids.
8. The method of claim 1 wherein the degradable component comprises a degradable plug or a degradable seat.
9. The method of claim 1 wherein the controlling the temperature-time profile depends at least in part on differential scanning calorimeter data.
10. The method of claim 1 wherein the one or more metals selected from the group comprises at least one basic metal having an atomic number equal to or greater than 31 and wherein the at least one basic metal having an atomic number equal to or greater than 31 comprises at least approximately two percent by weight of the material.
11. The method of claim 1 wherein the one or more metals selected from the group comprises gallium and wherein the gallium comprises at least approximately two percent by weight of a first particulate material of the plurality of particulate materials.
12. The method of claim 1 wherein the one or more metals selected from the group comprises at least one member selected from a group consisting of gallium, indium, tin, bismuth, zinc, mercury, lithium, sodium and potassium.
13. The method of claim 1 wherein the degradable component is degradable in an aqueous environment.
14. The method of claim 1 wherein the degradable component comprises at least a portion of a borehole tool.
15. The method of claim 1 , wherein the extruding step further comprises controlling the temperature-time profile of the extruding step by controlling the ram speed of the extruder ram during the extruding step such that the incipient melting does not occur to alter the surface roughness of the extrudate so as to impart surface features comprising one or more dimensions in excess of about 1 millimeter.