Abstract:RESUMO A pasta de cimento é a parte do compósito cimentício que possui baixa resistência ao atrito e suas propriedades mecânicas e microestruturais são determinantes para a durabilidade do material. As técnicas de microscopia são comumente utilizadas para elucidar esses comportamentos mecânicos, físicos e químicos de compósitos cimentícios. O objetivo deste trabalho foi elucidar a importância de técnicas de microscopia para avaliação direta do comportamento abrasivo de pastas de cimento com micropartículas de … Show more
“…Compressive strength increased 36.3% compared to reference pastes, reducing surface abrasion wear. [2] This process involves segregating SiC particles with diverse sizes and shapes into distinct granulometric fractions to meet industry standards and ensure the final product's quality [3].…”
In this study, researchers focused on improving the quality of SiC particles, considering their different sizes and shapes. To ensure a high-quality end product, the particles were separated into distinct granulometric fractions, with a focus on the nanometer range. The efficiency of this classification process played a crucial role in determining the quality of the final product. SiC holds significant market value, reaching US$3.3 billion in 2022. Brazil stands as one of the main producers of raw SiC, but it still relies on imports for finer granulometries needed in various industrial applications. The main objective of the research was to develop a highly efficient technique for the nanometric fractionation of silicon carbide powders. After conducting experiments, the researchers successfully obtained SiC with a diameter below 2 μm. To achieve this, multiple chemical dispersants were explored for the centrifugation process, aiming to disaggregate the solution and improve the overall yield, with sodium carbonate emerging as the most promising among the tested dispersants. By presenting these findings, the researchers contribute to advancing SiC production and its applications,
“…Compressive strength increased 36.3% compared to reference pastes, reducing surface abrasion wear. [2] This process involves segregating SiC particles with diverse sizes and shapes into distinct granulometric fractions to meet industry standards and ensure the final product's quality [3].…”
In this study, researchers focused on improving the quality of SiC particles, considering their different sizes and shapes. To ensure a high-quality end product, the particles were separated into distinct granulometric fractions, with a focus on the nanometer range. The efficiency of this classification process played a crucial role in determining the quality of the final product. SiC holds significant market value, reaching US$3.3 billion in 2022. Brazil stands as one of the main producers of raw SiC, but it still relies on imports for finer granulometries needed in various industrial applications. The main objective of the research was to develop a highly efficient technique for the nanometric fractionation of silicon carbide powders. After conducting experiments, the researchers successfully obtained SiC with a diameter below 2 μm. To achieve this, multiple chemical dispersants were explored for the centrifugation process, aiming to disaggregate the solution and improve the overall yield, with sodium carbonate emerging as the most promising among the tested dispersants. By presenting these findings, the researchers contribute to advancing SiC production and its applications,
In this study, researchers focused on improving the quality of SiC particles, considering their different sizes and shapes. To ensure a high-quality end product, the particles were separated into distinct granulometric fractions, with a focus on the nanometer range. The efficiency of this classification process played a crucial role in determining the quality of the final product. SiC holds significant market value, reaching US$3.3 billion in 2022. Brazil stands as one of the main producers of raw SiC, but it still relies on imports for finer granulometries needed in various industrial applications. The main objective of the research was to develop a highly efficient technique for the nanometric fractionation of silicon carbide powders. After conducting experiments, the researchers successfully obtained SiC with a diameter below 2 μm. To achieve this, multiple chemical dispersants were explored for the centrifugation process, aiming to disaggregate the solution and improve the overall yield, with sodium carbonate emerging as the most promising among the tested dispersants. By presenting these findings, the researchers contribute to advancing SiC production and its applications, especially in industries that require nanometer-sized SiC particles. The study not only enhances the quality of the final product but also reduces the country's dependence on imported carbide for industrial purposes.
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