Abstract: A plastic fiber composite material/aluminum laminate having: at least one flat element made of aluminum and/or an aluminum alloy and a plastic fiber composite material comprising a matrix material which has a temporarily flowable and then hardened state initially or at least under a temperature effect. The at least one flat element has etched anchoring structures, the anchoring structures have steps and undercuts, and the anchoring structures are filled and/or enclosed by the matrix material of the plastic fiber composite material. Use of the plastic fiber composite material/aluminum laminate and a method for producing the plastic fiber composite material/aluminum laminate.

Abstract: A method for etching fragments of aluminum or an aluminum alloy comprising the steps of: a. providing a hydrochloric acid solution in a trough-shaped container; b. inoculating the hydrochloric acid solution by chemically dissolving an amount of aluminum to produce an etching solution; c. adding the fragments to the etching solution immediately after the inoculation; d. etching the fragments for 0.5 to 10 minutes while stirring in such a way that the fragments are entrained by the motion of the etching solution; e. stopping the etching by diluting the etching solution with water; f. removing the etched fragments; g. repeatedly rinsing the fragments with water and h. rinsing the fragments with an organic desiccant. An etched fragment of aluminum or an aluminum alloy and also to a composite material comprising etched fragments.

Abstract: An adhesive joining device for providing and/or producing an adhesive connection in an adhesive point and/or adhesive section on a metal surface (5) to a body and/or component (4) to be adhered thereon and an adhesive using an electrochemical etching device, having a vacuum holder (1) with a vacuum connection (11), wherein a vacuum can be formed between the adhesive joining device and the metal surface (5) around the adhesive point and/or adhesive section to be produced; a tool changing holder (2) which receives at least two different tools (31, 32) in a time-staggered manner and in a defined position; a first usable tool (31) which can be inserted into the tool holder (2) in a time-staggered manner, namely an electrochemical etching cell for an electrolyte with an etching chamber which is oriented towards the metal surface (5), a feed for supplying an electrolyte (311) to the etching chamber, a drain for the etching chamber (312), and two electrodes (12, 313) with corresponding electric contacts, one electro

Abstract: A heterostructure comprising at least one first surface containing only copper and at least one second surface, opposite the first surface, containing only aluminium or an aluminium alloy with solid solutions present in the alloy, wherein a. an anchoring layer is arranged between the first and second surfaces, wherein b. each slice plane running perpendicular to the anchoring layer has at least one aluminium or aluminium-alloy island surrounded by copper, and c. at most the aluminium alloy solid solutions which are present in the alloy occur in the anchoring layer. Also, an aluminium-copper connector and a heterostructure production method.

Abstract: A plastic fiber composite material/aluminum laminate having: at least one flat element made of aluminum and/or an aluminum alloy and a plastic fiber composite material comprising a matrix material which has a temporarily flowable and then hardened state initially or at least under a temperature effect. The at least one flat element has etched anchoring structures, the anchoring structures have steps and undercuts, and the anchoring structures are filled and/or enclosed by the matrix material of the plastic fiber composite material. Use of the plastic fiber composite material/aluminum laminate and a method for producing the plastic fiber composite material/aluminum laminate.

Abstract: A heterostructure comprising at least one first surface containing only copper and at least one second surface, opposite the first surface, containing only aluminium or an aluminium alloy with solid solutions present in the alloy, wherein a. an anchoring layer is arranged between the first and second surfaces, wherein b. each slice plane running perpendicular to the anchoring layer has at least one aluminium or aluminium-alloy island surrounded by copper, and c. at most the aluminium alloy solid solutions which are present in the alloy occur in the anchoring layer. Also, an aluminium-copper connector and a heterostructure production method.

Abstract: A method for etching fragments of aluminum or an aluminum alloy comprising the steps of: a. providing a hydrochloric acid solution in a trough-shaped container; b. inoculating the hydrochloric acid solution by chemically dissolving an amount of aluminum to produce an etching solution; c. adding the fragments to the etching solution immediately after the inoculation; d. etching the fragments for 0.5 to 10 minutes while stirring in such a way that the fragments are entrained by the motion of the etching solution; e. stopping the etching by diluting the etching solution with water; f. removing the etched fragments; g. repeatedly rinsing the fragments with water and h. rinsing the fragments with an organic desiccant. An etched fragment of aluminum or an aluminum alloy and also to a composite material comprising etched fragments.

Abstract: A surface-treated metallic workpiece of titanium and/or titanium alloys with titanium as the main constituent and/or nickel-titanium alloys and also nitinol, wherein on the treated surface the metal is free from inclusions, precipitates of other metals, accumulations of alkali metals, alkaline earth metals and/or aluminium, intermetallic phases, and/or mechanically highly defect-rich regions, and the surface has a first roughness and a second roughness, wherein the first roughness is provided by depressions in the form of pores, the pores having a diameter in the range between 0.5 and 50 ?m—being open in the direction of the surface and closed in the direction of the workpiece, and at least some of the pores having an undercut, and the second roughness is provided by randomly distributed elevations and depressions in the range of 100 nm and less. The invention also relates to a production process for a surface-treated workpiece.