Search Results (8)
Enhancing the performance of highly filled polymerbonded Nd-Fe-B magnets: Integrated advanced surface treatments and additive manufacturing
This doctoral dissertation present research aimed into enhancing polymer-bonded Nd–Fe–B magnets through innovative surface treatments and additive manufacturing techniques, focusing on improving their mechanical strength, magnetic characteristics, and environmental stability. This research is critical for broadening the applicability of these magnets in sectors like green technologies and motion control systems. …
Deposition and protection mechanisms of zirconium conversion coatings on aluminium alloy, steel and zinc substrates
This thesis focuses on the development and optimisation of zirconium conversion coatings (ZrCCs) on cold-rolled steel (CRS), zinc (Zn), and aluminium alloy AA5754 substrates through a multidimensional approach. The utilization of statistical tools, specifically response surface methodology (RSM), enabled the assessment of the individual and mutual effects of various parameters …
Hybrid sol-gel coatings based on different acrylate derivatives for protection of aluminium alloy and steel against corrosion and biofouling
The subject of the doctoral dissertation is the development of coatings with improved protection of metals against corrosion and antifouling protection on structural steel S355 and aluminum alloy AA7075. S355 is a widely used metal in the construction, while AA7075 is mostly used in the transportation industry. Although they exhibit …
Interactions of azole molecules with copper ions and copper surfaces covered with chemisorbed H, O, Oh or Cl
In real environments, copper and other metal surfaces are never clean. Even during active dissolution in corrosion, they are likely to be covered with adsorbed corrosion-relevant species such as O, OH, H, and Cl. To explore the impact of such species on the bonding of imidazole, used herein as an …
Mechanisms and Effect of Deep Cryogenic Treatment on Steel Properties
Deep cryogenic treatment (DCT) is a type of cryogenic treatment, during which a material is subjected to temperatures below −160 °C. When a metallic material is modified with DCT, changes occur down to the nanoscopic level. DCT induces microstructural changes such as grain size refinement, formation of new grains, movement …
Protection of biomedical alloys by thin films of alumina and hafnia prepared by atomic layer deposition
One of the most commonly used metal materials for the manufacture of biomedical implants are stainless steel and titanium-based alloys. Due to the specific conditions and complex environment in the human body, different strategies have been employed to protect them and improve their functionality in vivo. In this thesis, a …
Synergistic action of organic inhibitors to mitigate corrosion of aluminium, copper and aluminium-copper alloy in chloride solution
The inhibitory action of organic compounds, 2-mercaptobenzimidazole (MBI), octylphosphonic acid (OPA) and their binary combinations was studied on aluminium, copper and aluminium alloy (AA) 2024 in chloride environments by ex-situ conventional electrochemical methods and surface-analytical techniques. In addition, the influence of pre-treatment of the metal surface and the choice of …
Hydraulic load cells for measurement of small loads
This work deals with the design of a small kitchen appliance with a weighing function integrated into a control loop in order to prevent unbalanced movement of the appliance during operation. In this particular case, the weighing should be appropriate for larger amounts (up to 5 kg) of ingredients. The …