Property modulated materials and methods of making the same

摘要

A method of making property modulated composite materials includes depositing a first layer of material having a first microstructure/nanostructure on a substrate followed by depositing a second layer of material having a second microstructure/nanostructure that differs from the first layer. Multiple first and second layers can be deposited to form a composite material that includes a plurality of adjacent first and second layers. By controlling the microstructure/nanostructure of the layers, the material properties of the composite material formed by this method can be tailored for a specific use. The microstructures/nanostructures of the composite materials may be defined by one or more of grain size, grain boundary geometry, crystal orientation, and a defect density.

主权项

1. A method for producing a property modulated composite, the method comprising:
providing a bath including at least one electrodepositable species; providing a substrate upon which the at least one electrodepositable species is to be electrodeposited; at least partially immersing said substrate into the bath; and changing two or more plating parameters in predetermined durations between a first value which produces a first material having a first composition and a first nanostructure defined by one or more of a first average grain size, a first grain boundary geometry, a first crystal orientation, and a first defect density, and a second value which produces a second material having a second composition and a second nanostructure defined by one or more of a second average grain size, a second grain boundary geometry, a second crystal orientation, and a second defect density, to produce 10 or more layers having either the first nanostructure or the second nanostructure;with the proviso that the second composition is the same as the first composition while the first average grain size differs from the second average grain size, the first grain boundary geometry differs from the second grain boundary geometry, the first crystal orientation differs from the second crystal orientation, and the first defect density differs from the second defect density;wherein said two or more plating parameters include beta and temperature.