Patent ID: 11904390
Assignee: PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  C  H | IPC B  C  H

Claim 0:
1. A method of manufacturing an electrostatic chuck, the method comprising:
preparing a powdered composite material by ball-milling (i) aluminum or aluminum alloy powder and (ii) carbon-based material powder;
preparing a multilayer billet comprising the powdered composite material, wherein the multilayer billet comprises an innermost core layer and at least one shell layer surrounding the innermost core layer;
forming an electrode layer from the multilayer billet;
forming a metal layer at least partially over the electrode layer, the metal layer comprising 1% to 5% by weight of cobalt (Co), 10% to 20% by weight of nickel (Ni), and 75% to 85% by weight of iron (Fe); and
forming a dielectric layer at least partially over the electrode layer and the metal layer.