MAGNETIC THRUST BEARING, TURBO MACHINE AND METHOD

摘要

A thrust bearing comprises an electromagnetic stator 22 with a stator surface 26 and a rotor disk 28 with a rotor surface 36 facing the stator surface 26. The rotor disk 28 comprises a radially inner portion made of a first material directly and exclusively connected to a radially outer portion made of a second material. The first material is a corrosion resistant metal or metal alloy and the second material is a ferromagnetic metal or metal alloy.