Glass-ceramic joining of Fe22Cr porous alloy to Crofer22APU: interfacial issues and mechanical properties

D’Isanto, Fabiana; Salvo, Milena; Molin, Sebastian; Koszelow, Damian; Javed, Hassan; Akram, Sufyan; Chrysanthou, A.; Smeacetto, Federico

doi:10.1016/j.ceramint.2022.06.166

Cited by 5 publications

(1 citation statement)

References 32 publications

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“…Joined samples were glued to steel cylinders using a two-component epoxy adhesive (DP490) and tested in tensile mode at room temperature according to a modified ASTM C633-01 [34] (on four samples) using a MTS Criterion model 43 machine (MTS Systems Corporation, Eden Prairie, MN, USA) equipped with a 5 kN load cell. The configuration used for the tensile test is reported in [35,36]. The cross-head speed was set to 0.5 mm/min to cause fracturing under quasi-static conditions.…”

Section: Methodsmentioning

confidence: 99%

Joining and Coating of Plasma Electrolytic Oxidated Aluminum Using a Silica Preceramic Polymer

Ferraris,

Benelli,

Casalegno

et al. 2024

Coatings

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This study evaluates the effectiveness of a silica preceramic polymer for joining and coating Plasma Electrolytic Oxidated (PEO) aluminum components at temperatures below 200 °C. PEO aluminum slabs were coated and joined with a silica precursor polymer (Durazane1800, Merck, Darmstadt, Germany), both with and without the addition of 48 wt% silica nanoparticles, and cured at 180 °C for 4 h in air. Thermogravimetric analysis assessed the curing process and thermal stability, while X-ray diffraction confirmed the polymer’s conversion to amorphous silica after heating at 1200 °C. Resistance to humid environments was tested by soaking coated samples in tap water for a week, with no mass variation observed. Mechanical testing through tensile mode and tensile lap tests showed that adding 48 wt% silica nanoparticles significantly improved joint cohesion and nearly quadrupled mechanical strength. Fracture surfaces were examined using Field Emission Scanning Electron Microscopy, and composition analysis was performed with Energy Dispersion X-ray Spectroscopy. Crack detection was conducted using Computer Tomography with an in situ bending test setup to obtain the mechanical resistance of the PEO coating. The results indicate that the silica preceramic polymer is suitable for joining and coating PEO aluminum components, with silica nanoparticles enhancing mechanical strength and providing excellent thermal stability and resistance to humidity.

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Section: Methodsmentioning

confidence: 99%