共搜索到22084条信息,每页显示10条信息,共2209页。用时:0小时0分0秒593毫秒
in the absence of Sn. Finally, a compact and continuous Ni-P amorphous alloy was deposited on PVC surface. The effect of thickness of hydrogel film on morphology of the as-obtained layer was investigated... nickel plating; Ni-P alloy; poly(vinyl chloride) 随着高分子材料的快速发展,聚氯乙烯(PVC)材料因其成本低廉,耐用及易成型等优点而被广泛应用于现代工程及武器装备领域.但由于大多数聚合物基复合材料是电绝缘体,其电阻率一般在1012~1017Ω·m之间,不具备电磁防护能力,造成武器装备中的电子设备信息失误,控制失灵,引起各种事故,影响科研和生产的正常进行.以......
characteristics of NiAl alloy on the composites, which is caused by TiC from reaction of Ti and C. Key words: C/C composites; NiAl intermetallic; Ti; infiltration; wettability C/C复合材料具有抗烧蚀性能和抗热震性能优异,比强度高..., BEDOLLA E, DREW R A L, PEREZ R. Improvement of the mechanical properties in a nanocrystalline NiAl intermetallic alloy with Fe, Ga and Mo additions[J]. Materials Science and Engineering A, 2003, 347(1/2......
and photovoltaic characterization of Cu2ZnSnS4 thin films fabricated by electrodeposition of alloy precursor followed by annealling YANG Jia1, LI Yi1, 2, ZHANG Kun1, 2, YUAN Tengfei1, JIANG Liangxing1, LIU... for the absorber of thin film solar cells were prepared by annealling of electrodeposited copper zinc tin alloy. CZTS films were characterized by energy dispersive X-ray spectroscopy, scanning......
pure copper/1350 aluminum alloy butt joints by friction stir welding[J]. Transactions of Nonferrous Metals Society of China, 2012, 22(6): 1298-1306. [8] KUANG B B, SHEN Y F, CHEN W H, YAO X, XU H S... Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China) Abstract: 5052 aluminum alloy and T2 copper dissimilar metals were welded using 4047 AlSi12 wire......
cracks in aluminum alloy thick plates considering quenching residual stress[J]. The Chinese Journal of Nonferrous Metals, 2012, 22(12): 3320-3326. [11] WANG X, GLINKA G. Determination of approximate... semi-elliptical cracks on finite plate of aluminium alloy were fitted by multiple linear regression, which was applied to calculate the weight function of cracked disk-shaped part. The average......
by simulation, the hot forming X38CrMoV5 tool steel as well as the molybdenum alloy TZM were selected as the tool alloys. The dies were treated by a plasma nitriding process and subsequently coated... points, caused by low alloy and in particular low carbon contents, are mainly disadvantageous. Therefore, steel must be selected, which is particularly suitable for thixocasting but which nevertheless......
. The organization and performance of copper tungsten alloy electrical contact in different ratio[J]. Nonferrous Metals Engineering, 2014, 4(2): 29-31. [19] GB/T 8320-2003. 铜钨及银钨电触头[S]. GB/T 8320-2003. Copper... conditions through JF04C electrical material testing system. The results show that increasing the density and decreasing the grain size of tungsten copper alloy can reduce and stabilize the contact......
study on rapid additive layer manufacture Hastelloy (R) X alloy by selective laser melting technology[J]. International Journal of Advanced Manufacturing Technology, 2012, 58(5/8): 545-551. [13] TOMUS..., the relative density of Rene104 nickel-based superalloy samples reaches 98.37%. The Rene104 alloy is mainly composed of columnar grains with the cross-sectional dimension of 0.5 μm and the axial......
and 6016 aluminum alloy based on BP neural network and its microstructure and mechanical properties ZHOU Dian-wu, QIAO Xiao-jie, ZHANG Li-juan, LI Sheng (State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, China) Abstract: The laser lap welding test on the galvanized steel and the 6016 aluminum alloy with tie fiber laser and no brazing......
that the suitable hot-rolling temperature of the alloy with Ce is between 700 and 750 ℃; it has excellent cold-working capability, and the annealed structure is fine and homogeneous after annealing... composition of designed alloy 分别采用电解铜,纯锌,纯铝,纯镍,纯铁,Cu-As中间合金,Cu-B中间合金和Al-Ce中间合金为原料,利用中频感应炉在石墨坩埚中熔炼上述铜合金.不同温度时对合金进行热轧实验:热轧板材冷轧50%,经 690 ℃中间退火30 min后,进行第二次冷轧60%,按上述退火制度退火后经过第三次冷轧,最终在700 ℃退火1 h得到成品,对每一步......