BioLogic’s Post

☀️🕶 𝐁𝐢𝐨𝐋𝐨𝐠𝐢𝐜'𝐬 𝐒𝐮𝐦𝐦𝐞𝐫 𝐒𝐞𝐬𝐬𝐢𝐨𝐧: 𝐂𝐨𝐫𝐫𝐨𝐬𝐢𝐨𝐧 𝐒𝐞𝐫𝐢𝐞𝐬 𝐂𝐨𝐧𝐭𝐢𝐧𝐮𝐞𝐬 Part 3: Practical for Corrosion Current Determination Our corrosion series continues with a practical guide on determining corrosion current using EC-Lab® software. In this Application Note you will learn: 🔵 How to use Tafel Fit and Rp fit analysis tools 🔵 Step-by-step protocol for Linear Sweep Voltammetry experiments 🔵 Practical application of Stern and Stern-Geary methods Plus: 🔵 Detailed experimental setup using a Rotating Disk Electrode 🔵 Clear explanation of the Stern relation and polarization resistance 🔵 Comparison of results from different analysis methods 🔗 Whether you're in research, quality control, or materials engineering, this guide offers valuable insights into quantifying corrosion behavior. 𝐑𝐞𝐚𝐝 𝐭𝐡𝐞 𝐟𝐮𝐥𝐥 𝐀𝐩𝐩𝐥𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐍𝐨𝐭𝐞 𝐡𝐞𝐫𝐞: 👇 https://lnkd.in/eUwvf_FU 🔔 Stay tuned for more in our corrosion series! Follow us to keep up with the latest in electrochemical analysis techniques. #Corrosion #MaterialsScience #Electrochemistry #BioLogicSummerSession

📜 A recent scientific paper by COMPASsCO2 colleagues on "Novel Chromium-Silicon Slurry Coatings for Hot Corrosion Environments" published in "High Temperature Corrosion of Materials" 📈 Key messages: ✔ Ni-based superalloys are used in gas turbines for their high-temperature mechanical properties. ✔Corrosion resistance is crucial for long service life, often achieved through diffusion coatings. ✔Cr-based coatings are preferred for temperatures between 650 and 950°C to combat hot corrosion. ✔Traditional pack cementation is labor-intensive, but a new Cr/Si slurry coating process has emerged as a cost-effective alternative. ✔The study compares slurry coatings and pack cementation coatings on the Ni-based superalloy Rene 80 at 900°C. ✔Testing involved exposure to air with 0.1% SO₂ and Na₂SO₄ deposits for 300 hours. ✔Uncoated Rene 80 showed rapid degradation, including oxide scale dissolution and breakaway oxidation. ✔Slurry coatings demonstrated significantly better resistance to hot corrosion than both the uncoated alloy and the Cr pack cementation coating. ✔Cr pack cementation coatings improved corrosion resistance but experienced Cr depletion and internal oxidation over time. ✔The slurry coatings formed protective Cr₂O₃, SiO₂, and Al₂O₃ layers, providing better long-term protection against hot corrosion. The paper can be downloaded here: 👉 https://lnkd.in/dywpGHc5 #MaterialsScience #Innovation #Superalloys #CorrosionResistance #Engineering #CoatingTechnology #Chromium #Silicon #Corrosion

Understanding Corrosion: Chemical vs. Electrochemical Corrosion is a significant challenge across many industries, but understanding its types can help in selecting the right prevention strategies. Here’s a quick overview of chemical corrosion and electrochemical corrosion: Chemical Corrosion (Dry Corrosion) Definition: Direct chemical reaction between metal and environmental gases. Mechanism: Occurs without an electrolyte. Common reactions involve oxygen, sulfur dioxide, or chlorine. Examples: Oxidation: Iron reacts with oxygen to form iron oxide (rust). Fe(s) → Fe²⁺(aq) + 2e⁻ Sulfidation: Metal reacts with sulfur-containing gases. Fe(s) + SO₂(g) → FeS(s) + O₂(g) Characteristics: Localized, often at high temperatures, and usually slower under ambient conditions. Electrochemical Corrosion (Wet Corrosion) Definition: Electrochemical reaction where metal degrades through electric current in the presence of an electrolyte. Mechanism: Requires an electrolyte (e.g., water) facilitating ion movement. Involves anodic and cathodic reactions. Examples: Rusting of Iron: Iron corrodes in the presence of water and oxygen. Anodic reaction: Fe(s) → Fe²⁺(aq) + 2e⁻ Cathodic reaction: O₂(g) + 2H₂O(l) + 4e⁻ → 4OH⁻(aq) Overall reaction: 2Fe(s) + O₂(g) + 2H₂O(l) → 2Fe(OH)₂(s) → Fe₂O₃ · H₂O(s) Galvanic Corrosion: Two different metals in contact in an electrolyte, leading to accelerated corrosion of the anodic metal. Characteristics: Widespread, faster in aggressive environments, and requires moisture or conductive liquids. Key Differences Reaction Environment: Chemical: Dry, without electrolyte. Electrochemical: Requires electrolyte. Mechanism: Chemical: Direct reactions with gases. Electrochemical: Involves electrochemical reactions through an electrolyte. Examples: Chemical: Oxidation in dry air, high-temp oxidation. Electrochemical: Rusting, galvanic corrosion. Control Methods: Chemical: Protective coatings, oxidation-resistant alloys. Electrochemical: Cathodic protection, sacrificial anodes, corrosion inhibitors. Understanding these differences is crucial for selecting effective prevention and control strategies. #Corrosion #MaterialsScience #Engineering #Manufacturing #Metallurgy #SurfacePreparation #QualityControl #galvanized #galvanization

Good Evening dear Connexion, let's refresh our memories By answering these Some Chemical Engineering Quiz together by knowing your response below in comment. *A)Venturimeter is used to measure the flow rate of fluids in pipes,when the pipe is in ......... Position .1) horizontal,2) vertical,3)inclined,4)Any. *B)All modes of heat Transfert i.e ,conduction,convection and Radiation accur in case of the 1) Condensation of Steam in a partial condenser .2)Boiler furnace.3)insulated pipe car raying high pressure steam.4)none of these. *C)Laser is a device to produce :1)gamma rays,2)microwaves,3)a beam of white light,4)a beam of coherent light.

🔥 Excited to Present: Thermal Mechanical Treatment (TMT) and the Science of Steel! 🔥 Ansar Hussain Rizvi Today, I'm diving deep into the fascinating world of Thermal Mechanical Treatment (TMT) – a process that transforms the properties of steel for various industrial applications. Whether you're a materials enthusiast or in the metal industry, understanding TMT opens a door to a world of innovation and durability. ⚙️💡 Key Highlights of the Presentation: 🔸 Purpose of TMT: Learn how we enhance the strength, ductility, and toughness of steel through this process. 🔸 What is Steel? Delve into the core definition of one of the world’s most versatile materials, essential to countless applications. 🔸 Terminology of Physical Metallurgy: Unlock the language behind the behavior of metals at the atomic level. 🔸 Phase Diagrams: Explore the phase transformations that occur as steel undergoes different heating and cooling stages. 🌟 From the microstructure to the macro strength, TMT is a journey where science meets engineering. Can't wait to share this knowledge and bring steel to life! 🌍💪 https://lnkd.in/dRsUhuwP #SteelScience #ThermalMechanicalTreatment #TMT #Metallurgy #PhaseDiagrams #PhysicalMetallurgy #MaterialsEngineering #InnovationInMetals #EngineeringExcellence #IndustrialRevolution #EngineeringLife #ManufacturingMatters #MetalsMatter #TechInIndustry #StrengthInSteel #FutureOfMaterials

Shortcut column design is very common in the chemical engineering field, Here is how you can perform this calculation using Aspen-Hysys simulation softwear. #chemicalengineering  #AspenHysys  #AspenTechUniversity

Corrosion Engineering, Science and Technology Vol. 58, No. 8, out now. Cavitation #erosion, vibratory polishing effects on #stainlesssteel, and nano-synergistic #corrosion inhibitors are among the topics discussed in this issue. Read the full issue here: https://lnkd.in/eMvH_q2W

🔬 Testing Procedures for Phosphorus in Industrial Applications 🔬 Phosphorus content plays a crucial role in various manufacturing processes, including sand casting. To ensure the right balance and maintain high-quality standards, precise testing is essential. 🛠️ Common methods used to test phosphorus in materials include: 1️⃣ Spectroscopy – This method uses light to measure phosphorus levels with high accuracy. 🌟 2️⃣ Wet Chemistry – A traditional approach, involving chemical reactions to detect phosphorus content. 🧪 3️⃣ X-Ray Fluorescence (XRF) – A non-destructive technique that helps measure phosphorus concentration quickly. ⚡ Accurate phosphorus testing ensures the mechanical properties of castings remain consistent, avoiding issues like brittleness or reduced durability. By following these procedures, industries can maintain quality control and optimize their processes. 📊 #Phosphorus #Testing #QualityControl #Spectroscopy #XRF #Manufacturing #SandCasting #Engineering

Thank you Martin Deelmann for your work on the below: Simultaneous thermal analysis (#STA / #TGA) of #CarbonBlack examines the thermal behavior and decomposition properties of this material. Key aspects include: • #OxidativeDecomposition: In an oxidizing atmosphere, carbon black fully combusts at 600–800 °C, indicating its organic content. 🔥 • #MaterialCharacterisation: This analysis provides insights into purity, thermal stability, and any chemical changes. 📊 • #STA / #TGA are essential methods for evaluating the thermal and chemical stability of carbon black, widely used in quality assurance and research. 🧪 A current “hot topic” is #BatteryTechnology: Carbon black is used here to enhance electrical conductivity in anodes and cathodes, improve energy density, and stabilise electrode structures. ⚡ Other industrial applications include use as an additive for abrasion resistance, as a pigment in paints and varnishes, for UV protection, and to enhance absorption behavior. 🎨🌞 #ThermalAnalysis #MaterialScience #AnalyticalChemistry #LabTech #QualityControl #ResearchAndDevelopment #ThermalDecomposition #CarbonMaterials #ChemicalAnalysis #HighPerformanceMaterials #EnergyStorage #ElectrodeMaterials

Comprehensive presentation on #corrosion #corrosionprotection