Comprehensive analysis of the coated component from a FORD engine

A modern user requires low operating costs, but also reliability from machines and technical devices. Reliability during the service life depends on the quality of construction solutions, but also largely on the quality, properties and adaptation to the working conditions used in the construction of construction materials. During the operation of technical objects, their a highly predictable wear occurs. The problem is the phenomena of premature wear and damage of elements. The causes of failure of technical facilities are usually complex and depend on many factors. They can include the human factor and the one related to the quality, selection, production and technological processes of the materials used in the construction of the facility. In real technical facilities, many premature failures are caused by material fatigue, which is related to the imperfection of the material and the morphology of non-metallic inclusions. The paper presents the change in fatigue strength for rotational bending of highpurity structural steel. In order to diversify the matrix of inclusions, the steel was hardened and tempered at temperatures from 200C to 600C. The influence of impurity diameter and arithmetic average impurities space on the fatigue strength of industrially produced steel was investigated.

Section: Introductionmentioning

confidence: 99%

Influence of Impurity Morphology on the Fatigue Strength of High-Purity Structural Steel Melted in an Electric Furnace

Lipiński¹

2023

“…The chemical composition of the designed geopolymers depends on the desired application [5]. Geopolymer coatings can be applied to various surfaces, such as wood, polymers, metals or concrete [6][7][8][9]. Their main advantages of using alkaline silicate coatings as passive fire protection are less environmental concerns, resistance to microorganisms and UV radiation.…”

Section: Introductionmentioning

confidence: 99%

Fire Resistance Test of Geopolymer Coatings on Non-Metallic Underlying Substrates

Mamoń¹,

Jaskevič²,

Mareš³

et al. 2023

Self Cite

This article summarizes the results from the fire resistance test of geopolymer suspensions in the form of coatings on non-metallic substrates. Their heat resistance was evaluated based on the burn-through time compared to the uncoated substrate. Non-metallic substrate materials, extruded polystyrene (XPS) and chipboard (DTD) were chosen as the underlying substrates for GP suspension research. Parameters from the fire resistance test as fire test duration of geopolymer coatings and percentage increase in burn time of geopolymer coatings on an XPS and DTD substrates compared to an uncoated substrate were evaluated. One of the discussed point was also the addition of CaCO 3 and Al(OH) 3 for studding flame retardancy effect. Geopolymer Coatings Fire resistance test Non-metallic substrate Flame retardancy

“…The aim of the research was to prepare alkali-activated metakaolin-based geopolymer on a structural steel substrate, to evaluate the visual quality of the coatings and to evaluate the results of the grid test [17,18].…”

Section: Introductionmentioning

confidence: 99%

Adhesion of Various Geopolymers Coatings on Metal Substrates

Mareš¹,

Mamoń²,

Jaskevič³

et al. 2023

Self Cite

This article deals with adhesion of various alkali-activated metakaolin-based geopolymer coatings on structural steel 1.0038 (according to EN 10025-2). This steel alloy was chosen in order to analysis adhesion of prepared geopolymer coatings. Our samples were characterized by laser and SEM microscopy and grid test was performed. Microscopy was performed to get knowledge about visible characterization and overall quality of prepared coatings. Based on previous research SEM results correspond with properties changes in coatings and their classification of grid test. Grid test was performed and results was evaluated. These results show potential of our prepared GP and could be used as base for further research and possible application as anti corrosion coatings in construction or fire-resistant barriers. The aim of the research was to prepare alkali-activated metakaolin-based geopolymer on a structural steel substrate, to evaluate the visual quality of the coatings and to evaluate the results of the grid test. GeopolymerStructural steel Microstructure Grid test Adhesion