The figure below shows a cell in which copper metal is to be plated onto a second metal. I
In the former the substrate is given an electrically conducting coating and placed in a liquid solution (electrolyte) containing metal ions, such as gold, copper, or nickel. Learn more. Electroplating is a process that uses electric current to reduce dissolved metal ions by the use of electrolysis, to obtain the dissolved metal ions at the other electrode, mostly in the form of a uniform … Electroplating. Electroplating definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Electrodes Electrodes of the First Kind . Settings In the scientific study of chemistry, the process of electrolysis involves using direct electric current to prompt a chemical reaction which otherwise would be non-spontaneous. An alkaline detergent is used to clean the surface to ensure the zinc electroplating is of good quality, and the plating remains intact for a long period of time. During the process, the surface to be covered acts as a cathode in an electrolytic cell, and the metal that is to cover it acts as an anode. 2. The object is first cleaned to remove any lingering dirt, dust or debris. Cleaning of the substrate is done in order to remove any dirt, rust, oil, etc., from the surface. Electroplating is usually used to cover a less expensive metal with a more expensive metal, or to cover a corrosive metal with a less corrosive or noncorrosive metal. What is Electroplating? This part acts as the negatively charged electrode in the circuit. Hydrogen ions (H+) are reduced to hydrogen gas by the incoming electrons from the cathode. The current is provided by an external power supply. Electroless plating does not require electricity; however, a catalyst is required for deposition. Here also, an electrochemical cell, which is composed of two electrodes immersed in the same electrolyte, is used. 3. The electricity reduces the dissolved metal cations. Jewelry and silverware can be silver- or gold-plated, while zinc is often used to coat iron to protect against rust. An Overview of Cathodic Protection Potential Measurement, Hydrogen Embrittlement Issues with Zinc: New Guidance Discussed, Introduction to Electroplating Interview with Jane Debbrecht, Important Facts You Might Not Know About Copper Patina, QUIZ: Corrosion Under Insulation (CUI) and How to Prevent It, The Benefits of Thermal Insulating Coatings for Storage Tanks and Process Vessels in Storm-prone Areas, Preventing Corrosion with Thermal Insulating Coatings, CUI Myth: Shop Coatings are Better Quality than Field Coatings, All About Electromagnetic Acoustic Transducers (EMATs), Integrity Management: How Ultrasonic Inline Inspection (ILI) Technology Enhances Safety, The Use of Cathodic Protection Coupons for Monitoring Cathodic Protection Levels, Major Railway Infrastructure Projects That'll Impact the Corrosion Control Market, Polythionic Acid Stress Corrosion Cracking of Austenitic Stainless Steel, How to Effectively Recognize, Prevent and Treat Pitting Corrosion, Causes and Prevention of Corrosion on Welded Joints, 5 Ways to Measure the Hardness of Materials, An Introduction to the Galvanic Series: Galvanic Compatibility and Corrosion, Chloride Stress Corrosion Cracking of Austenitic Stainless Steel, Introduction to the Chemistry of Pipes in Seawater, The Effects of Salt Contamination on Coating Performance, Anti-Corrosion Coatings for Different Service Exposures, Substrate Surface Preparation for Corrosion Prevention, Nitriding for Corrosion and Wear Fatigue Resistance, Coatings for Marine Applications & Offshore Platforms. Y
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