PrefaceChapter 1: Properties of Steel and AlloysQuantitative Analysis of Yield Strength in V-Alloying Medium Manganese Steel under Different ProcessesAn Improved Random Forest Magnesium Alloy Prediction Method Based on Particle Swarm OptimizationEffects of Solution Aging Treatment on Microstructure and Hardness of Ni30 SuperalloyChemical Composition and Microstructure Characterization of High Purity CuMn Alloy for Integrated CircuitChapter 2: Applied Chemical TechnologiesStudy on Application and Mechanism of Alkali Sulfadiazine Neodymium as PVC Heat StabilizerModification and Application of Materials for Strong Inhibitory Drilling FluidExtraction Technology for Manganese Sulfate Solution PurificationCarbonaceous Catalyst Activated Persulfate for Degradation of Antibiotic Pollutants in WaterChapter 3: Materials for Energy StorageApplication of Strontium-Doped Bismuth Ferrate in Lithium-Sulfur Battery CathodeImproving Structure and Electrochemical Performance of Single-Crystal Ni-Rich Cathodes by Aluminium DopingChapter 4: Coatings and TribologyExperimental Study on Dissolution Stability and Dispersion and their Influence on Tribological Properties for Reducing Friction and Prolonging Life of Armored Vehicle Engine Lubricating Oil AdditivesPreparation, Characterization and Tribological Performance of Polyurethane (PU) Coatings Filled with Graphene Oxide (GO)Brush Plating of Ag-Bi Coatings from a Cyanide-Free SolutionEffect of Alternate Cycle Temperature on the Tribological Performance of Polyimide CompositesChapter 5: Strength of MaterialsStudy on Finite Element Method for Solving Stress Concentration ProblemDiscussion on Fatigue Life Analysis Methods for Connecting Bolts of the Top Cover of Water Pump Turbines