Tape casting method and tape cast materials
AssigneeInframat Corporation
InventorsShiqiang Hui, Yide Zhang, Danny Xiao, Mingzhong Wu
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Abstract
A precursor tape casting method is one in which chemical precursors are converted into a final chemical phase from green tapes to products. Because chemical precursors are employed rather than the final powder materials, sintering is not required to form the material. Lower annealing temperatures instead of high temperature sintering allow the formation of grains of about 1 to about 100 nanometers in the final material. In addition, when the final material is a magnetic/insulator composite, improved magnetic properties may be obtained.
Claims20
A method of tape casting a material, comprising:
- casting one or more chemical precursors to form a green tape;
- and
- heating the green tape for a time and at a temperature sufficient to convert the chemical precursors to their final chemical phase, and to anneal and form the material.
A method of tape casting a magnetic composite, comprising:
- casting a magnetic component chemical precursor and an insulting material chemical precursor to form a green tape;
- and
- heating the green tape for a time and at a temperature sufficient to convert the magnetic component chemical precursor and the insulating material chemical precursor to their final chemical phase, to anneal the green tape and to form the magnetic composite;
- wherein each magnetic particle of the magnetic composite is surrounded by an insulating layer, and wherein each magnetic particle has a grain size of about 1 nanometer to about 100 nanometers.
A tape cast material comprising grain sizes of about 1 nanometer to about 100 nanometers.
Dependencies are inferred from the claim text.