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The corroded samples were then cut and the penetration indexes were calculated in order to measure the corrosion damage using the Image J 1.42q software (Wayne Rasband, National Institutes of Health, USA), according to the procedure described in previous paper8. Besides corrosion, the mechanical strength at high temperatures was also measured. Cylindrical samples (50 mm of height and 20 mm of diameter) were prepared and calcined at 600°C. In compression testing machine with hot stage (model ZWICK Z250, Zwick GmbH & Co., Germany), the castables were fired at 1500°C for 3 hours, using distinct conditions: (i) restrained expansion (correcting the load in order to keep no deformation) and (ii) expansion free (without any load). After these firing steps, the samples were broken under hot compression at 1250°C under a rate of 0.002 mm/s, aiming to verify the difference between the set firing condition (with or without constraint).

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cmds1907

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真强必胜: 金币+1, ok 2014-09-13 08:38:14
英语留级生: 金币+5, 翻译EPI+1 2014-09-13 14:45:58
然后切割腐蚀样品和计算渗透指数,以便使用图像J 1.42q软件(韦恩 拉斯班德,美国国家卫生研究院),根据以前文章【8】描述的过程,测量腐蚀损害。除了腐蚀,也测量了高温机械强度。制备了圆柱形样品(高50毫米和直径20毫米),并在600°C焙烧。在具有热载台的抗压(压缩)试验机(型号 ZWICK Z250, Zwick GmbH & Co.,德国)上,浇注料在1500°C燃烧3小时,使用不同的条件:(i)约束膨胀(校正负载为了保持不变形)和(ii)没有膨胀(没有任何负载)。这些燃烧步骤后,样品在1250°C以0.002 mm/s的速度被热压缩破坏,旨在验证点火条件的区别(有或没有约束)。
2楼2014-09-12 22:26:31
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