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: aluminum alloy 2024; fluorescence; sensing coating; corrosion monitoring; sensibility 1 Introduction Aluminum alloys have been widely used in manufacture of airplane and watercraft because......
reengineering, each factor has three levels. The model of multi-index comprehensive evaluation based on indicators of satisfaction was established, and multi-index comprehensive evaluation and sensibility... simulation; sensibility analysis 对于地下矿山,采场结构参数直接影响采场的稳定性,是矿山安全,高效生产的重要参数.长期以来,在地下矿山开采过程中,一般凭借经验或工程类比法来获得具体的采场结构参数[1],这带有较大的主观随意性,显然是不符合采矿科学规律的.近年来,许多专家学者对采场结构参数的优化进行了研究,如:朱志彬等[2]采用自然平衡拱理论,结合三维弹塑性有限元得出了厚大矿体......
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Compression Sensibility of Magnetic-concentrated Fly Ash Mortar under Uniaxial Loading贾兴文School of Materials Science & Engineering,Chongqing University摘 要:The electrical conductivity, compression sensibility, workability and cost are factors that affect the application of conductive smart materials in civil structures. Consequently, the resistance......
and microhardness of the coating have been analyzed. On the base of orthogonal comparison tests,influences of many factors on the cracking sensibility of plasma metallurgy coating have also been studied. The results indicate that substrate and its surface condition, processing parameters and components of plasma metallurgy coating have great effects on cracking sensibility of plasma metallurgy coating. Through......
高温下高炉渣与碳的还原吴铿,陈春元,刘兴慧,姚克虎,杜春荣北京科技大学冶金学院!北京100083摘 要:在高温条件下合成和实际高炉渣与碳的还原过程中,SiO2在2123K以上全部被碳还原,MgO在2173K上可全部被还原,而Al2O3即使在2273K只被还原63%,合成高炉渣在碱度不变时,增加MgO含量,可使渣中还原SiO2生成的SiC增加和SiO减少.随着温度升高和与碳混合均匀,实际高炉渣中氧化物的还原和反应后渣中Al2O3的含量都增加,而生成SiC的量减少;渣中MgO的含量明显降低,在较高的温度下渣中M......
to evaluate machinability of gray cast irons. Effect of FeSi75+RE and FeSi75+Sr inoculants on mechanical properties, machinability and sensibility of gray cast iron used in cylinder block were... quality. While gray cast iron inoculated with 20%FeSi75+80% Sr inoculants exhibited the best machinability, the lowest cross-section sensibility and the least microhardness difference. The tool flank......
M951镍基高温合金的高温高周疲劳性能周鹏杰1,于金江2,孙晓峰2,管恒荣2,何向明3,胡壮麒21. 江苏科技大学材料科学与工程学院2. 中国科学院金属研究所高温合金研究部3. 浙江天乐集团有限公司摘 要:对M951镍基高温合金光滑,三角形缺口试样分别在700,900℃下进行高周拉-拉疲劳试验(应力比R=1),并进行了断口形貌分析.结果表明:M951合金具有较好的高温高周疲劳性能;700℃时光滑和缺口试样的疲劳极限分别为320,294 MPa,合金在该温度下的缺口敏感性很小;900℃时光滑试样的疲劳极限为3......
耐高温高比表面氧化铝的研究进展 周建成1,蒋玮1,张碧蓉1,吴东方1 (1.东南大学化学化工学院,南京,211189) 摘要:耐高温高比表面氧化铝作为一种性能优异的催化剂栽体在化工环保行业有着广泛的应用.详细综述了提高氧化铝耐高温性能的各种途径以及改性氧化铝的制备技术.同时还展望了耐高温高比表面氧化铝的发展.结果表明,SiO2或La,Ce等稀土元素的加入能够有效抑制氧化铝向α-晶型转变和比表面积降低;与传统制备方法相比,溶胶-凝胶法和反相微乳液法能够显著提高改性氧化铝的耐高温性能. 关键词:氧化铝; 载体; 耐高温; 高比表面; [全文内容正在添加中] ......
高温高发射率陶瓷材料的制备与研究刘庆生,常晴,李江霖江西理工大学冶金与化学工程学院摘 要:用常规固相反应法成功制备Co/Cr/Ni/Cu/Mn掺杂的La0.8Ca0.2Mn0.5X0.5O3陶瓷材料,并利用XRD,XPS,FT-IR,IR-2红外发射率测试仪对制得的试样进行了物相性能和红外辐射性能的研究.研究表明:所制备试样的晶体结构均为正交晶系,平均粒径在3859 nm之间.400和600 cm-1均出现了钙钛矿型复合氧化物的特征振动峰,即所制得试样均形成了稳定的钙钛矿结构.在2.55μm波段范围内材料的......