Abstract: The micromotor serves to drive an impeller (12) rotating in a pump housing (14). The excitation winding of the micromotor is surrounded by an enveloping flux return structure (18) of ferromagnetic material divided into rings (35). The rings (35) are separated from each other by slots (25). The slots are produced by laser cutting of a continuous tube. The enveloping flux return structure has a small wall thickness of a few tenths of a millimeter. The rings (35) are mutually connected by bridges (26). The enveloping flux return structure (18) can be integrally formed with the pump housing (14) of the pump (11). The micromotor can be produced in a small format with a small diameter. It has a high flow rate at a correspondingly high rotational speed. The micromotor is particularly suitable for introducing blood pumps into the vascular system in a non-operative minimally invasive percutaneous manner.

Abstract: The micromotor serves to drive an impeller (12) rotating in a pump housing (14). The excitation winding of the micromotor is surrounded by an enveloping flux return structure (18) of ferromagnetic material divided into rings (35). The rings (35) are separated from each other by slots (25). The slots are produced by laser cutting of a continuous tube. The enveloping flux return structure has a small wall thickness of a few tenths of a millimeter. The rings (35) are mutually connected by bridges (26). The enveloping flux return structure (18) can be integrally formed with the pump housing (14) of the pump (11). The micromotor can be produced in a small format with a small diameter. It has a high flow rate at a correspondingly high rotational speed. The micromotor is particularly suitable for introducing blood pumps into the vascular system in a non-operative minimally invasive percutaneous manner.

Abstract: The article of manufacture, in particular a gas turbine blade, can be exposed to a hot aggressive gas. The article has a base body, to which a respective thermal barrier coating is applied in at least one first surface region and in a second surface region. In the first surface region, the coating has a fine structure that is different from the coating in the second surface region. The method for applying a thermal barrier coating to a product includes electron beam sputtering and reactive gas flow sputtering processes.