共搜索到180180条信息，每页显示10条信息，共18018页。用时：0小时0分0秒703毫秒
times expressed the fatigue failure. 3 RESULTS AND DISCUSSION 3.1 Coating properties The element content of (Ti, Al)N monolayer coating was determined (light element nitrogen excluded) by EDX... and the large number of layer interfaces. 3) The TiN/(Ti, Al)N multilayer coating improves the toughness of coating through enhancing the adhesion of a coating to the substrate. 4) The PVD coating has......
文章编号:1004-0609(2007)11-1881-06 油溶性添加剂对铝酸钠溶液种分分解率和Al(OH)3粒度的影响 陈 锋1,谢志辉1,张宝砚1,毕诗文2,尹 成3 (1. 东北大学 理学院,沈阳 110004； 2. 东北大学 材料与冶金学院,沈阳 110004； 3. 中国铝业股份有限公司 山西分公司,河津 043300) 摘 要:研究由羧酸盐类阴离子表面活性剂与聚氧乙烯型非离子表面活性剂复配的油溶性添加剂对铝酸钠溶液种分分解率和产物Al(OH)3粒度的影响,并对该添加剂影响铝酸钠溶液晶种分解过程的相关机理进行探讨.结果表明,当添加剂中羧酸盐类表面活性剂的含量为60%(质量分数),添加量75 mg/L时,相对空白试样,添加剂可提高铝酸钠溶液种分分解率2.5%左右,产物中粒径大于45 μm的Al(OH)3颗粒的含量增加约7%(质量......
. 7). The obtained results are presented in Table 3. Fig. 3 Illustration of joints heated at 440 °C for 60 min under various pressures Fig. 4 Apparent features of Al/Mg alloys bonds heated at various... diagram of Al-Mg [21] Table 3 EDS results of Regions A, B and C in Fig. 5 According to the Al-Mg binary phase diagram (Fig. 7), the existence of Al12Mg17 (γ), mixture of γ and β (Al3Mg2) and mixture of α......
Al–TiO2–Gr powder metallurgy hybrid composites with cold upset forgingV.Anandakrishnan22. Department of Production Engineering, National Institute of Technology摘 要:The cold upsetting studies were carried out for the aluminium metal matrix hybrid composites in the present study. Aluminium metal matrix hybrid composites were synthesised through powder......
-Mg-Ni (R= rare earth or Ca element) system hydrogen storage alloys with high hydrogen storage capacity has been studied and reported [1－13]. Kadir et al[1－3] found that the maximum hydrogen storage... Cycling stability of La-Mg-Ni-Co type hydride electrode with Al SUN Xian-zhong(孙现众), PAN Hong-ge(潘洪革), GAO Ming-Xia(高明霞), LI Rui(李 锐),LIN Yan(林 燕),L MA Shuai(马 帅,) Department......
Cycling stability of La-Mg-Ni-Co type hydride electrode with Al SUN Xian-zhong(孙现众), PAN Hong-ge(潘洪革), GAO Ming-xia(高明霞), LI Rui(李 锐), LIN Yan(林 燕), MA Shuai(马 帅... the partial substitution of Al for Ni. Therefore a decrease in the pulverization of the alloy particles is obtained, which leads to the decrease of the contact area of the fresh alloy surface with alkaline......
体.IR及XRD谱显示,水解产物的主要成分为α-Al(OH)3,并有少量杂相存在.27Al MAS-NMR分析结果表明,固体中的Al全部为六配位体,杂相中不包含未转化的四面体或其它过渡态中间体.实验结果表明,氢氧化铝结晶过程中,铝酸根离子的分解所伴随的构型转化可能是在溶液中而不是在固相中完成的. 关键词:铝酸根离子；分解机理；构型转化 中图分类号:TF 111.3 ...; configuration inversion 中等浓度以上的铝酸钠溶液中铝酸根阴离子存在的主要形态为,经过结晶过程以后,得到Al(OH)3晶体.对于......
......
(purity 99.80%), coarse WC powder (purity 99.50%) and analytical purity Al powder (purity 99.30%) with average particle sizes of 3, 10 and 15 μm, respectively, were used as starting materials. Figure 1... Trans. Nonferrous Met. Soc. China 22(2012) 847-852 WC-Ni3Al-B composites prepared through Ni+Al elemental powder route LONG Jian-zhan1, 2, ZHANG Zhong-jian1, 2, XU Tao1, 2, PENG Wen1, 2, WEI Xiu-yu1......
by ball milling for 1-2 h. The Si powder was 45-55 μm and the Al powder was 80-120 μm. Then the C/C skeletons were embedded into the powder mixtures in a graphite crucible and heat treated at 1100-1200 °C... pattern of impacted solid particles (b) 3 Results and discussion 3.1 Microstructure of C/C-SiC composites Representative cross-section morphologies of the prepared C/C-SiC composites with different Al......
