Abstract: A composite material includes a substrate that is thermochemically treated in order to harden the surface thereof and that is, therefore, not subject to deformations as a result of high stresses sustained by the outer layer. The composite material also includes an adhesion layer overlying the treated layer. Subsequently, an intermediate layer and a DLC (Diamond Like Carbon) layer are added, wherein the DLC layer has a structure based on an amorphous carbon film. The composite material may be used in valves built into submarine equipment. The composite material is thermochemically treated and comprises a treated substrate and an adhesion layer onto which is disposed an intermediate layer that receives a final DLC layer. All of these layers are disposed on the surface of a substrate of a gate valve.

Abstract: The present application refers to a connection for connecting hydraulic tubing as used by subsea devices, by using a shaped memory alloy material. The sleeve connection made of a shaped memory alloy material is originally manufactured with an internal diameter shorter than the external diameter of the tubing, internally has a cover material made of dielectric material and, most internally, has a layer of an anti-corrosive material which is contiguous to the external face of said tubing The layer of an anti-corrosive material internally has protruding portions designed to grasp the external surface of the tubing, forming streaks.

Abstract: The present application refers to a connection for connecting hydraulic tubing as used by subsea devices, by using a shaped memory alloy material. The sleeve connection made of a shaped memory alloy material, is originally manufactured with an internal diameter shorter than the external diameter of the tubing, internally has a cover material made of dielectric material and, most internally, has a layer of an anti-corrosive material which is contiguous to the external face of said tubing The layer of an anti-corrosive material internally has protruding portions designed to grasp the external surface of the tubing, forming streaks.

Abstract: In some embodiments, the present disclosure pertains to energy storage compositions that comprise a clay and an ionic liquid. In some embodiments, the clay is a bentonite clay and the ionic liquid is a room temperature ionic liquid (RTIL). In some embodiments, the clay and the ionic liquid are present in the energy storage compositions of the present disclosure in a weight ratio of 1:1. In some embodiments, the ionic liquid further comprises a lithium-containing salt that is dissolved in the ionic liquid. In some embodiments, the energy storage compositions of the present disclosure further comprise a thermoplastic polymer, such as polyurethane. In some embodiments, the thermoplastic polymer constitutes about 10% by weight of the energy storage composition. In some embodiments, the energy storage compositions of the present disclosure are associated with components of energy storage devices, such as electrodes and separators.