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)Abstract:Stainless die with micro-groove and micro-hole have been designed and manufactured, which has been used to study superplastic microforming of 2091Al-Li alloy by means of superplastic forming... micro-rib specimen, behavior of material could be understood well.Key words:superplasticity; microforming; extrusion; 2091Al-Li alloy......
(Ni-W)-ZrO2非晶复合镀层的制备及其性能 () [全文内容正在添加中] ......
十二烷基硫酸钠和1.4-丁炔二醇电沉积Ni-W合金的机理陈颢2,张雪辉22. 江西理工大学材料与化学工程学院摘 要:通过络合理论,晶粒特征,表面形貌,微观结构和费卢姆金(Φpymknh)方程式,研究十二烷基硫酸钠(SLS)和1.4丁炔二醇(BOZ)2种表面活性剂对Ni-W合金电镀及镀层质量的影响,考察针对性阻化作用机理和镀层硬度下降的原因.结果表明:SLS为0.2 g/L,BOZ为0.4 g/L时,表面活性剂达到形成胶束的临界浓度CMC,表面活性剂的阻化作用最为显著,电镀速度明显减小,但晶粒细化,表面变光整,耐蚀性能显著提高,年腐蚀速率Ke仅为0.0025 mm/y,耐蚀等级为2;在电镀过程中,SLS对钨有针对性阻化作用,随SLS浓度的增加,镀层中的钨明显减少,硬度降低;少量SLS可有效防止气泡,针孔......
-forging method [J]. Materials Science and Engineering A, 2007, 449-451: 338-342. [17] KIM W J, YOO S J, KIM H K. Superplastic microforming of Mg-9Al-1Zn alloy with ultrafine-grained microstructure [J...Trans. Nonferrous Met. Soc. China 22(2012) s656-s660 Microforming of superplastic 5083 aluminum alloy Md. Abu Mowazzem HOSSAIN1, Sung-Tae HONG1, Kyu-Yeol PARK1, Young-Sang NA2 1. School of Mechanical......
W-Ni/TiC复合材料的制备与组织赵美玲1,罗来马1,2,李浩1,伍枝正1,张延召1,吴玉程1,21. 合肥工业大学材料科学与工程学院2. 安徽省有色金属材料与加工工程实验室摘 要:采用化学活化预处理对Ti C粉体进行镀前预处理,预处理后通过化学镀制备Ni-W包覆Ti C复合粉体,再将2%Ni-W包覆Ti C复合粉体与W粉混合,采用不同压力压制后烧结获得了W-Ni/Ti C复合材料.通过扫描电子显微镜(SEM)和能谱分析仪(EDS)观察和分析了Ti C陶瓷粉体预处理前后形貌,包覆后复合粉体的形貌和成分,以及不同压力压制W-Ni/Ti C烧结体形貌和成分,探讨了Ni-W包覆Ti C复合粉体和W-Ni/Ti C复合材料形成过程,压制压力对烧结体的影响规律.结果表明,化学镀方法能够制备Ni-W包覆Ti C......
Study on Thermomagnetic Treatment Fe-25.5Cr-12Co Permanent Magnetic Alloy Zhen Liang1,GAO Run-sheng2,ZHU Dan-yang1,SUN Xue-yin1,SHAO Wen-zhu1,XU Ren-gen1 (1.Technology and Development Centre... Fe-25.5Cr-12Co alloy by different process of thermomagnetic treatment were investigated. It is found that magnetic properties are sensitive to parameters of thermomagnetic treatment process in magnetic......
Crystallization behavior of electroless Co-Ni-B alloy plated in magnetic field in presence of cerium XUAN Tian-peng(宣天鹏), ZHANG Lei(章 磊), HUANG Qin-hua(黄芹华) Institute of Materials Science...: The electrochemical property, chemical composition and crystal structure of electroless Co-Ni-B-Ce alloy plated in general state as well as in magnetic field were studied using potentiometer, plasma......
Growth and Characterization of Doped CeO2 Buffers on Ni-W Substrates for Coated Conductors Using Metal Organic Deposition Method王耀1,2,卢亚锋11. Northwest Institute for Nonferrous Metal Research2. State...) preferred orientation have been prepared on biaxially textured Ni-W substrates by metal organic decomposition (MOD) method. The factors influencing the formation of cracks on the surface......
基于纳米MoS2的复合电刷镀层的抗黏着磨损性能陈元迪广州航海学院船舶工程系摘 要:为了合理选择镀层,成功修复模具以提高其使用寿命,在Cr12Mo V模具钢上电刷镀制备了具有自润滑性和减摩性能好的Ni-W(D)-Mo S2和Cu-Mo S2纳米复合电刷镀层,分析了2种镀层与1Cr18Ni9Ti不锈钢对磨后的磨损失重和形貌,选出性能最佳的镀层以改善模具的抗黏着磨损性.结果表明:在加工强度较高且具有较明显加工硬化现象的不锈钢时,Ni-W(D)-Mo S2镀层具有良好的耐磨性和更优秀的抗黏着磨损能力,Cu-Mo S2同样具有良好的抗黏着能力,但对磨件强度较高和加工硬化明显时其耐磨性较差.关键词:Ni-W(D)-MoS2镀层;Cu-MoS2镀层;电刷镀;黏着磨损;模具修复;......
and Engineering, Central South University, Changsha 410083, China Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018 Abstract: Taking Ta–W alloy system... in their cohesive energies. It will provide theoretical guidance for the scientific designation to new candidate for ultra- high-temperature materials in areo-engine applications. Key words: Ta–W alloy......
