Analysis on mechanism of explosive spalling resistance of aluminum powder on ladle corundum-based refractory castable

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Analysis on mechanism of explosive spalling resistance of aluminum powder on ladle corundum-based refractory castable

机译：铝粉铝粉爆炸剥落电阻机理分析岩岩耐火性耐火件

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The effect of the particle size (50-325 mesh) and content (0-0.1 wt%) of metallic aluminum powder on the explosive spalling resistance of corundum-based refractory castables were investigated in this study based on air permeability, pore size distribution, heat release, fracture energy and microstructural analyses. The experimental results show that the addition of Al powder significantly improves their explosive spalling resistance. As observed, the explosive spalling resistance of the castables was mainly influenced by the permeability mechanism and the fracture energy. Permeable paths were generated in the microstructure of the sample during the overlapping period between the curing process and the H-2 gas forming one, derived from the Al-H2O reaction. The highest permeability level was obtained when 0.075 wt % of Al powder with size of 100 mesh was incorporated into the corundum-based refractory castables. At the same time, the fracture energy of the castable samples was increased accordingly.

机译：在本研究基于透气性，孔径分布热释放，裂缝能量和微观结构分析。实验结果表明，添加Al粉末显着提高了爆炸性剥落抗性。如图所示，铸件的爆炸性剥落电阻主要受渗透机制和裂缝能量的影响。在固化过程和形成源自Al-H2O反应的H-2气体之间的重叠时段期间在样品的微观结构中产生可渗透路径。当含有100目的尺寸的0.075wt％的Al粉末掺入基于刚玉的耐火材料中时，获得最高渗透水平。同时，相应地增加可膨胀样品的断裂能量。

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《CERAMICS INTERNATIONAL》 |2020年第2期|共7页
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正文语种 eng
中图分类陶瓷工业;硅酸盐工业;
关键词
Metallic aluminum powder; Ladle; Corundum-based refractory castable; Explosive spalling resistance;

机译：金属铝粉;钢包;基于刚玉的耐火浇注;爆炸性剥落抗性;

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1. Analysis on mechanism of explosive spalling resistance of aluminum powder on ladle corundum-based refractory castable [J] . CERAMICS INTERNATIONAL . 2020,第11aPta2期

机译：铝粉铝粉爆炸剥落电阻机理分析岩岩耐火性耐火件
2. Effect of Accelerator on Explosive Spalling Resistance of Castable Refractories [J] . HISAYA MATSUMOTO, MITSUTO MURAOKA, HIROHIDE OKUNO Journal of the Technical Association of Refractories . 2010,第1期

机译：促进剂对可浇铸耐火材料抗爆炸散裂性的影响
3. Effect of Accelerator on Explosive Spalling Resistance of Castable Refractories [J] . HISAYA MATSUMOTO, MITSUTO MURAOKA, HIROHIDE OKUNO Journal of the Technical Association of Refractories . 2007,第2期

机译：促进剂对可浇铸耐火材料抗爆炸散裂性的影响
4. AN ANALYSIS OF REFRACTORY CONCRETE DRYING AND A MECHANISM FOR EXPLOSIVE SPALLING [C] . Greg Palmer, Juan Cobos, James Millard, Biennial worldwide congress on refractories . 2014

机译：耐火混凝土干燥分析及爆炸剥落机构
5. Innovative refractories for preventing nozzle clogging in continuously cast aluminum-killed steels. [D] . Tuttle, Robert Bruce. 2004

机译：用于防止连续铸造的铝镇静钢中喷嘴堵塞的创新耐火材料。
6. A Comparative Study on Permanent Mold Cast and Powder Thixoforming 6061 Aluminum Alloy and Sicp/6061Al Composite: Microstructures and Mechanical Properties [O] . Xuezheng Zhang, Tijun Chen, He Qin, 2016

机译：永久铸模和粉末触变性6061铝合金和Sicp / 6061Al复合材料的比较研究：微观组织和力学性能
7. Mechanical properties of various concrete after high temperature exposure Mechanical property of various types of concrete after high temperature exposure is investigated. Considering compressive strength requirement for a vertical element in high rise building, concrete specimens with various design strengths of 35, 80, 100, and 150 MPa were tested. Particularly, the influence of incorporated steel fiber on fire resistance is of interest in this study. Experimental results show that the fire resistance depends on the design strength and steel fiber content. Normal strength concrete (NSC) of a design strength of 35 MPa or high performance concrete (HPC) of 80-100 MPa does not spall when exposed to 100-400 °C of temperature. However, an explosive spalling occurs at 300 °C when the HPCs contain 1 vol. of steel fiber. Ultra-high performance concrete (UHPC) of a design strength of 150 MPa and 1.5 vol. of steel fiber also shows dramatic spalling at 300 °C. The experimental results found in this study can contribute to a better understanding of the behaviors of HPC and UHPC under fire and the role of steel fiber on the fire resistance. [O] . 2017

机译：研究了高温暴露后各种混凝土高温曝光机械性能各种混凝土的机械性能。考虑到高层建筑中垂直元件的抗压强度要求，测试了35,80,100和150MPa各种设计强度的混凝土试样。特别是，在这项研究中，掺入钢纤维对耐火性的影响。实验结果表明，耐火性取决于设计强度和钢纤维含量。在暴露于100-400°C的温度时，80-100MPa的设计强度为35MPa或高性能混凝土（HPC）的正常强度混凝土（NSC）不会击落。然而，当HPC含有1体积的钢纤维的百分比时，爆炸性剥落发生在300℃。超高性能混凝土（UHPC）的设计强度为150 MPa和1.5 Vol。钢纤维的百分比也显示出300℃的剧烈剥落。本研究中发现的实验结果可以有助于更好地了解在火灾中的HPC和UHPC的行为以及钢纤维对耐火性的作用。
8. Effects of Alternate Fuels. Report No. 5. Analysis of Fused Cast AZS Refractory, Silica Refractory, and High-MgO Refractory Degraded by Residual Oil Combustion Products [R] . Wei, G. C., Tennery, V. J. 1978

机译：替代燃料的影响。报告第5号。残余油燃烧产品降解熔融铸造aZs耐火材料，二氧化硅耐火材料和高mgO耐火材料的分析

Analysis on mechanism of explosive spalling resistance of aluminum powder on ladle corundum-based refractory castable

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