共搜索到19444条信息,每页显示10条信息,共1945页。用时:0小时0分1秒625毫秒
reveal cobalt depletion in the alloy surface beneath oxide scales, and a progressive enrichment in cobalt towards the outer surface of the scale. Key words: nickel-cobalt alloys; electrodeposition... produced by adjusting the composition of the plating solution using a direct current electrodepositing process. The oxidation behaviors of nickel and nickel-cobalt alloys in air at 960 °C were studied......
with fibrous morphology can be obtained. Key words: thermodynamic analysis; nickel-cobalt alloy; nickel-cobalt oxalate precursor; predefined Ni/Co ratio; fibre-shape 1 Introduction As important... CoNi alloy assemblies [J]. Eur J of Inorg. Chem, 2007, 25: 3947-3951. [6] Cécile G, Pierrre L, BENEDICTE W F. Electrochemical synthesis of cobalt-nickel nanowires in an ethanol-water bath [J]. Mater......
as high performance electromagnetic interference shielding materials. Ferromagnetic binary alloy fine fibers of iron-nickel, iron-cobalt and cobalt-nickel were prepared by the organic gel-thermal...-nickel, iron-cobalt and nickel-cobalt fine alloy fibers from the raw materials of citric acid and metal salts. 2 Experimental 2.1 Preparation of metal fibers The starting reagents were citric acid......
The Strengthening of Cu-15Ni-8Sn Alloy WANG Ming-Pu1,WANG Yan-hui1,HONG Bin1 (1.School of Material Science and Engineering, Central South University, Changsha China) 摘要:The microstructure, property and relation between them of Cu-15Ni-8Sn alloy are studied by means of TEM and the measurement of hardness. The results show that γ '' metastable phase strengthens alloy because of its ordering......
The Technological Improvements of Aluminum Alloy Coloring by Electrolysis LI Nai-jun1 (1.Teachers College, Shenyang University, Shenyang 110015, P. R. China) 摘要:The technological process of coloring golden-tawny on aluminum alloy by electrolysis was improved in this paper. The optimum composition of electrolyte was found, the conditions of deposition and anodic oxidation by electrolysis were......
Microstructure and Performances of Nanocrystalline Zinc-nickel Alloy Coatings LI Guang-yu1,NIU Li-yuan1,JIANG Zhong-hao1,LIAN Jian-she1 (1.The Key Lab of Automobile Materials, Ministry of Education, China, College of Materials Science and Engineering, Jilin University, Nanling Campus, Changchun, 130025, China) 摘要:Nanocrystalline zinc-nickel alloy coatings were deposited from an alkaline......
Alloy 20不锈钢薄板等离子弧焊接工艺研究赵斌,王宾宾,王小华中国船舶重工集团公司第七二五研究所摘 要:对Alloy 20不锈钢薄板进行了等离子弧焊接工艺试验研究.结果表明,采用等离子弧焊接方法,ERCr Ni Mo-3焊材及合理的焊接工艺参数,等离子弧焊接工艺可用于Alloy 20不锈钢薄板的焊接,焊接接头各项性能均能满足要求.关键词:Alloy 20;不锈钢薄板;等离子弧焊接;......
)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......
precursor of nickel-cobalt alloy powders with an appropriate Ni to Co molar ratio was prepared under selectively synthetic conditions. The composition and morphology of the precursor were...]. Their researches aimed to prepare spherical nickel-cobalt alloy powders with accurate Ni to Co molar ratios at low pH values. In our previous research, fibrous nickel and copper powders were prepared......
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...: The mechanical behavior of superplastic 5083 aluminum alloy during microforming process was investigated by finite element analysis. A micro V-groove die was modeled to analyze the effects of forming......