An electronic device according to various embodiments of the disclosure may include: a display; and a housing including the display, at least a portion of the housing including: an aluminum alloy machined to have a designated shape; a first film layer formed on the aluminum alloy; and a second film layer formed between the aluminum alloy and the first film layer, wherein the first film layer may be formed by a first anodizing process using a first voltage on the aluminum alloy, and the second film layer may be formed by a second anodizing process using a second voltage on the aluminum alloy after the first anodizing process.

The present invention provides a self-healing anti-icing ACSR with composite microporous structure, which is formed lower layer pores with a small diameter (durable storage remediator) and upper layer pores with a large diameter (increase a proportion of air cushion to improve anti-icing performance) by growing a uniform porous aluminum membrane on the surface of an aluminum base body. By optimizing the diameter and thickness of the lower layer pores and upper layer pores, and under the action of air pressure, capillary force and surface energy, a low surface energy remediator is immersed in pores, so an anti-icing ACSR with durable excellent anti-icing self-healing performance is prepared. The invention improves the anti-icing performance of the ACSR in practical applications and the self-healing of the anti-icing performance after being damaged, thereby extending the anti-icing life of the ACSR and improving the durable anti-icing performance thereof.

A device, system, and a method are provided for notifying a user to replace a sacrificial anode in a pool or spa system. The device is provided in the form of a body defining a cavity, a sacrificial anode, and a sensor. The sacrificial anode substantially surrounds the cavity when the sacrificial anode is coupled to the body. The sensor is at least partially received into the cavity and is in communication with a pool automation system. The sensor is designed to transmit a signal to the pool automation system when the sensor detects water within the cavity. The signal is processed by the pool automation system, and the pool automation system may then transmit a notification to a user that the sacrificial anode is depleted.

A method for chemically polishing a metal surface within a metal-polymer composite, where the composite includes at least one metal part and at least one part made of a polymer composition, the method including the step of: (i) contacting the surface of at least one metal part at least partially with an aqueous solution including an oxidizing agent and an alkaline agent, at a temperature and for a duration sufficient to obtain a shiny metal surface. Also a metal-polymer composite that includes at least one part made of a polymer composition and at least one chemically polished metal part and that is obtainable by the method and to a product including the metal-polymer composite.

A corrosion protection system is provided. The corrosion protection system comprises an electrical contact coupled to an apparatus. The electrical contact can apply a negative potential to the apparatus. The corrosion protection system comprises a sensor. The sensor detects moisture with respect to the apparatus. The corrosion protection system comprises a power supply. The power supply is electrically coupled to the electrical contact and provides a negative potential to the electrical contact in accordance with commands of a processor. The processor utilizes the power supply attached to the apparatus via the electrical contact to provide and apply the negative potential to the apparatus based on a sensor signal from the sensor. The sensor signal indicates the detection of the moisture by the sensor.

A corrosion protection system is provided. The corrosion protection system comprises an electrical contact coupled to an apparatus. The electrical contact can apply a negative potential to the apparatus. The corrosion protection system comprises a sensor. The sensor detects moisture with respect to the apparatus. The corrosion protection system comprises a power supply. The power supply is electrically coupled to the electrical contact and provides a negative potential to the electrical contact in accordance with commands of a processor. The processor utilizes the power supply attached to the apparatus via the electrical contact to provide and apply the negative potential to the apparatus based on a sensor signal from the sensor. The sensor signal indicates the detection of the moisture by the sensor.

In example implementations, a method for coloring an alloy is provided. The method includes anodizing a substrate in an anodizing bath comprising phosphoric acid, at a constant temperature and a constant voltage for a first time period to develop an anodizing layer that includes a barrier layer, reducing the constant voltage applied to the anodizing bath for a second time period to change a thickness of the barrier layer and change a width of pores in the anodizing layer, plating the substrate in a plating bath at a first current that is increased over a third time period in accordance with a current profile of the plating bath, and plating the substrate in the plating bath at a second current for a fourth time period.

Anti-corrosion nanoparticle compositions include a carrier and a plurality of nonionic metal nanoparticles. The metal nanoparticles can be spherical-shaped and/or coral-shaped metal nanoparticles. The nanoparticles are selected so as to locate at the grain boundaries of a metal or metal alloy when the anti-corrosion composition is applied to the metal or alloy, thereby reducing or preventing intergranular corrosion of the metal or alloy.

A corrosion protection device, system, and method are provided. The device may operate while being coupled to the object being protected and to a power source using a total of only two terminals. This may be accomplished by de-referencing the return path node of the circuit using a choke device that blocks a temporal AC component of an anti-corrosion signal. The choke device therefore diverts the anti-corrosion signal to a single negative/ground path to the object and then returns through a positive lead of the circuit. A two terminal corrosion protection device may thereby simplify the installation process, for example on a vehicle, by not requiring that another connection be made to the object at a spaced apart location from a first connection to the object.

A corrosion resistant article including an aluminum substrate and a corrosion-inhibiting cerium based corrosion inhibitor corrosion inhibiting additive on the aluminum substrate, the corrosion inhibiting additive comprising an anodic corrosion inhibitor and a cathodic corrosion inhibitor, the anodic corrosion inhibitor greater than 25 wt % of the total inhibitor.