Papers by Keyword: Abrasion Resistance

Abstract: Some parts made of polymeric materials are used in abrasive environments. Any damage to their integrity by abrasive environments could have a negative effect on the operation of those parts. In the paper, it is proposed to use a process and equipment for evaluating the resistance to abrasive erosion based on the application of a process of enlarging a previously made hole in the polymer material specimen using a conical abrasive tool. The feed movement of the conical abrasive tool takes place under the action of a counterweight of known size. The duration of the process of enlarging by abrasion provides information on the resistance to abrasive erosion of the specimen material. An experimental study of the resistance to abrasive erosion of a polymeric material using the enlarging process with a conical abrasive tool was designed and implemented. The experimental results were processed mathematically, and an empirical mathematical model was obtained that highlights the influence of some input factors in the abrasive process on the resistance to abrasive erosion evaluated through the duration of the enlarging process with a conical abrasive tool. The possibility of using enlarging by abrasion as a procedure for evaluating the resistance to abrasive erosion was confirmed.

Abstract: This study presents a comprehensive investigation into the optimization of burnt clay brick durability using recycled ceramic tile powder as a partial replacement for clay. The research employed a central composite design approach to systematically evaluate the influence of the ceramic powder addition on the water absorption and abrasion resistance characteristics of the bricks. The experimental results demonstrated that the incorporation of 10% recycled ceramic tile powder significantly enhanced the durability of the burnt clay bricks, reducing the water absorption from 15.2% to 8.9% and the abrasion loss from 3.38 mm to 1.59 mm, compared to the control sample. The statistical analysis of the central composite design model revealed a strong correlation between the ceramic powder content and the durability properties, with R-squared values exceeding 93%. The findings of this study highlight the potential of using recycled ceramic tile powder as a sustainable and effective additive to improve the overall performance and durability of burnt clay bricks, contributing to the development of more eco-friendly and durable construction materials.

Abstract: Material abrasion is a critical consideration in product design, manufacturing, and maintenance because it has a high impact on several properties. When it comes to the abrasion of polymer yarns, insight into the behaviour of yarns due to constant abrasion is important for ensuring final product quality, performance, and customer satisfaction. For this study, a group of polymer yarns is selected. The yarns differ in raw material, as well as the yarn type. Within the experiment selected yarns in both single condition and within the fabric structure were conducted to different abrasion tests. The study findings reveal that yarn type, raw material composition, and additional treatments significantly influence abrasion resistance. Recycled polyester yarns demonstrate comparable, if not superior, abrasion resistance to conventional ones, making them viable for various applications.

Abstract: The photovoltaic panel is one of the most promising advancements when it comes to sustaining energy. However, being exposed to extreme and harmful atmospheric conditions can decrease its efficient transmittance. Therefore, an anti-reflective coating is added to a PV panel to provide different promising properties for the PV panel. It is used to reduce the reflection of light for more efficient transmittance. It can also possess several properties like hydrophobic self-cleaning and abrasion resistance when further modified. With these properties, PV panels become more effective and maintain their high transmission for a long time. Different materials are used in fabricating ARCs, but this review focused on silica due to its low refractive index of 1.52 using the dip-coating fabrication technique. This review focused on introducing additives such as CTAB, PMHS, and PDMS and their effects on the hydrophobicity and abrasion resistance of ARCs. Moreover, studies gathered for each additive were analyzed and compared to determine the advantages and disadvantages of each additive. Insights and perspectives were also given by focusing on the factors affecting the hydrophobicity and abrasion resistance of ARCs which may help future researchers to fabricate more efficient ARCs.

Abstract: The influence of Al/Ti and Al/Cr ratios on the structural, mechanical and tribological properties of AlTiSiN and AlCrSiN coatings, deposited by the cathodic arc evaporation PVD method at a temperature of 400°C, was investigated. The remains of the original AlSiN hexagonal phase were observed in the obtained coatings as well as the crystallites of cubic TiN and CrN, respectively. XPS analysis assumes the presence of a substoichiometric SiN. The addition of 11 at.% Ti or 13 at.% Cr in AlSiN led to an increase in both the coating’s resistance to plastic deformation and the plasticity index. The addition of 13 at.% and 24 at.% Cr to the AlSiN coating structure resulted in a decrease in the average coefficient of friction with 18% and 36% against a counterpart of Al₂O₃, respectively, and with 36% for both concentration against steel ball counterpart. The addition of Ti have no influence on the values of the coefficient of friction at using ceramic counterpart, while at steel counterpart decreased it up to 30%. Both element change the abrasion effect of the coating.Keywords: AlCrSiN; AlTiSiN; Cathodic Arc Deposition; Tribological Behaviour; Abrasion Resistance; Nanoindentation

Abstract: Comparison of the data on resistance of alloys against abrasive wear made it possible to establish that alloys with a predominantly austenitic or austenitic-martensite matrix and eutectic component based on alloyed chromium carbide Cr₇C₃ [5] or Cr₂₃C₆ have the highest wear resistance, while microhardness of austenite and martensite should be higher than 5000 N/mm². In alloys with high wear resistance, there is also no significant difference in microhardness of eutectic and primary crystals of γ-iron, which is probably one of the indicators of adhesion strength of carbides and solid solution. In the case of formation of a pearlite component, wear resistance drops sharply.

Abstract: The aim of this paper is to investigate two different concrete mixes, one with Limestone Powder (LSP) and the other with Ground Granulated Blast-Furnace Slag (GGBS), both mixes containing superplasticizer, in order to analyse their compressive strengths at 7 and 28 days, their abrasion resistance and slip resistance. The two mixes are treated with two different surface protection finishers, applied on the surface after the concrete has cured and analysis of how these finishers affect the abrasion resistance and slip resistance of the concrete is discussed.

Abstract: The current view on the determination of the abrasion resistance of a cement composite is mainly focused on the resistance of the composite to the effects of mechanical abrasion. However, many concrete structures are exposed to the abrasive effects of flowing liquids. One of the test procedures simulating this principle of abrasion is based on the creation of a very fast flow of liquids, often including abrasive media. Based on worldwide published research on the given topic, the use of the action of ultrasonic waves in a liquid, leading to the simulation of the cavitation stress of a composite, which is a very dangerous phenomenon, is considered a suitable method for creating the mentioned abrasion effects. The following article discusses new possibilities for simulating and evaluating the abrasive effects of cavitation on cement composites using the action of ultrasonic waves in a liquid. These effects will be monitored on cement pastes, which will be modified with several types of commonly used admixtures. Furthermore, the connection between the effects of the mentioned abrasive action and several physical-mechanical parameters will be monitored.

Abstract: The substitution of cobalt, present in the commercial binder metal matrix commonly used by the industry, was analyzed: 25,2%Fe-49,5%Cu-24,1%Co – NEXT 100® by the niobium element of the Fe-Cu-Co system, obtaining 4 metal matrices: 28,34%Fe–56,66%Cu–15%Nb; 25%Fe–50%Cu–25%Nb; 21,67%Fe–43,33%C–35%Nb; 18,34%Fe–36,66%Cu–45%Nb. This study aims to evaluate the behavior of metal matrices to better choose the type of matrix to be used in the manufacture of diamond tools. The metal powders were blended according to the compositions of each metal matrix and then hot pressed at 800o /35MPa / 3min, thus occurring the sintering. The sintered samples of each metal matrix were conducted to the Abrasion Resistance test in order to verify the wear, for the accumulated times of 2, 6, 12 and 20 minutes. In these metal matrices, density, porosity and Vickers hardness (HV5) tests were performed to better understand the wear suffered by the samples. Thus, the metal matrix 25% Fe-50%Cu-25%Nb presented, in the general context of the properties and from the abrasive point of view, satisfactory results capable of replacing the NEXT 100 matrix.

Abstract: TiC-WC-(Ni,Co,Cr) cermets are potential candidates for the substitution of straight cemented carbides in certain wear applications. This work analyses the effect of Ti/W and Co/Ni ratios on the microstructure and abrasion resistance of this type of cermets. From a microstructural point of view, cermets in the (Ti,W)C-(Ni,Co,Cr) pseudo-binary region show uncontrolled (Ti,W)C grain growth and a high degree of contiguity of the carbide phase. A microstructural refinement is observed as the Ti/W ratio decreases, especially when WC precipitation occurs. Abrasion resistance in these materials is dominated by hardness.