1,478 research outputs found
Erosion corrosion behavior of AISI 304/316 stainless steel
304/316不锈钢以其良好的抗腐蚀性能和机械性能而得到广泛应用,尤其是在核电行业。然而,在其应用中存在着冲蚀磨损,腐蚀磨损,应力腐蚀开裂和高温氧化等问题。本文研究了304/316不锈钢两相射流冲蚀磨损行为,在NaCl、HCl和NaOH中的腐蚀磨损行为,在实验室模拟压水堆条件下的应力腐蚀开裂和高温氧化腐蚀行为。 (1)本文通过两相高速射流对304/316不锈钢的冲蚀实验,通过失重法和材料表面形貌、结构和成分微观分析,研究材料冲蚀磨损失效过程以及冲蚀机理分析,通过动电位极化曲线和电化学阻抗谱探讨不同冲蚀条件下样品的腐蚀性能。结果表明:颗粒种类、颗粒粒径、颗粒浓度、冲蚀角度、冲蚀时间以及样品材料...304/316 stainless steel are widely used because of their good corrosion resistance and mechanical properties, especially in the nuclear power industry. However, there is erosion, corrosion-erosion, stress corrosion cracking, high temperature oxidation and other issues in its application. In this paper, the study has been conducted to assess the erosion behavior of 304/316 SS through two-pHase high...学位:工学博士院系专业:能源学院_核工程与材料学号:3242013015402
Coexistence of Orientalism and Anti-Orientalism in Amy Tan’s Novels: Amy Tan’s Dual Identity as a Chinese American Writer
摘要 赛义德在1978年出版了《东方主义》。在该书中,他揭露了东方主义运行的奥秘。他认为东方主义在西方根深蒂固。在东方主义话语下,东方是个不理智、落后及野蛮的存在;而西方则是理智和文明的世界。通过东方主义话语,西方得以维持其优越的地位并得以进一步获得政治、经济、文化上的主动权。作为一个美国生美国长的作家,谭恩美不可避免地受到了东方主义的影响。因此,她的小说表现出了东方主义的特点。她的书中不乏对中国元素的刻板描写,这些描写使中国被塑造成了一个贫穷、落后且没有生机的国家。另一方面,谭恩美并没有全盘接受东方主义的话语。在与母亲和解后,她开始努力了解中国文化,因此,在她的小说中又出现了对美国社会及文...Abstract Edward Said published Orientalism in 1978, in which he reveals the secret of Orientalism. He argues that Orientalism has been deeply rooted in the western world. Under the discourse of Orientalism, the orient is defined as irrational, backward and uncivilized while the occident assumes an image of being rational and civilized. It is through Orientalism that the occident is able to mainta...学位:文学硕士院系专业:外文学院_外国语言学及应用语言学学号:1232013115273
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