共搜索到13487条信息，每页显示10条信息，共1349页。用时：0小时0分0秒499毫秒
addition was prepared by means of melting-casting.The samples of the welded joints of Al-6Mg alloy with trace Sc addition were made by method of manual argon-arc welding.Neutral salt spray test... in the microstructure of welded joints. Key words:Sc; Al-Mg alloy; welded joint; neutral salt spray corrosion; exfoliation corrosion; microstructure; [全文内容正在添加中] ......
J. Cent. South Univ. (2020) 27: 1828-1845 DOI: https://doi.org/10.1007/s11771-020-4411-1 Provenance and salt structures of gypsum formations in Pb-Zn ore-bearing Lanping basin, Southwest China... Formation is of marine origin. In contrast, the gypsum from the Paleogene Yunlong Formation is characterized by the dome, bead and diapiric salt structures, wider range of both 87Sr/86Sr......
中性盐雾预腐蚀对AF1410高强钢疲劳寿命的影响 王宗武1,郝雪龙1,于美1,刘建华1,李松梅1 (1.北京航空航天大学,材料科学与工程学院,北京,100191) 摘要:采用失重法和XRD法研究了AF1410钢在中性盐雾环境中的耐蚀性能,并对中性盐雾预腐蚀不同时间后的试样进行疲劳性能测试,研究了不同预腐蚀时间对材料疲劳寿命的影响.结果表明:AF1410钢发生了严重的全面腐蚀,腐蚀产物主要由FeO(OH)和Fe_3O_4组成,并得到其腐蚀失重曲线;疲劳断口形貌分析表明,随预腐蚀时间的延长,腐蚀损伤程度增加,在疲劳加载过程中易形成较多的疲劳裂纹扩展源而导致疲劳断裂失效;最终获得中性盐雾预腐蚀AF1410钢结构疲劳寿命特性以及预腐蚀对疲劳寿命的影响系数C(t)曲线. 关键词:中性盐雾; 预腐蚀; 疲劳寿命; C(t)曲线; neutral salt spray test; pre......
aluminum plate heat exchangers will be made. Key words: salt water spray test; corrosion resistance; plate heat exchanger; thermal conductivity; Vickers hardness ... it conforms to ISO 9227. The acetic acid salt spray (AASS) test is a kind of generally well-known methods to examine anodized coating layer on aluminum. The specimens with 150 mm×100 mm×20 mm......
Effects of Carbon Content and Microstructure on Corrosion Property of New Developed Steels in Acidic Salt SolutionsFeilong Sun1,Xiaogang Li1,2,Xuequn Cheng1,21. Corrosion and Protection Center... self-developed by thermo-mechanical controlled processing.The effects of the carbon content and the microstructure on the corrosion properties of new steels were investigated by immersion test......
Simulation of Fiber Pushing-out Test张亚芳Faculty of Civil Engineering,Guangzhou University摘 要:The stress distribution on the failure progress of fiber pushed-out test was studied. A numerical program, developed by meso-damage mechanics, was adopted to simulate the whole failure process of interface debonding and fiber pushing out. From the simulation......
......
J. Cent. South Univ. Technol. (2008) 15(s1): 080-083 DOI: 10.1007/s11771-008-319-x Effect of salt solutions on chain structure of partially hydrolyzed polyacrylamide ZHANG Qing(张 青), ZHOU Ji-sheng(周吉生), ZHAI Yong-ai(翟永爱), LIU Feng-qi(刘凤岐), GAO Ge(高 歌) (College of Chemistry and MacDiarmid Laboratory, Jilin University, Changchun 130021, China) Abstract: The effect of salt solutions (NaCl......
174.4 文献标志码:A Growth mechanism of cerium salt conversion coating modified with citric acid on galvanized steel KONG Gang1, WU Shuang1, LIN De-xin2, WANG Xia2, LI Han-chang2... 528000, China) Abstract: Cerium salt conversion coatings modified with citric acid were obtained on galvanized steel samples by immersing the samples into an aqueous solution containing 25 g/L Ce(NO3)3......
J. Cent. South Univ. (2020) 27: 210-220 DOI: https://doi.org/10.1007/s11771-020-4289-y Model test to investigate reasonable reactive artificial boundary in shaking table test with a rigid container... of Springer Nature 2020 Abstract: When conducting dynamic tests of underground structure by a rigid container, reasonable boundary conditions are one of the essential factors related to the accuracy of test......
