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of plasmonic waveguide-resonator system with κ0=5×1012 rad/s, κ1=1×1014 rad/s, L2=290 nm, w=50 nm [19] According to the mechanism, HE et al [20] engaged in a series of related researches. First... block. Furthermore, CHEN et al [34] studied a nanoscale plasmonic filter based on a single-stub coupled MDM waveguide system. An adjustable stop band could be achieved by loading a metal rod......
of Fe71Nb4Hf3Y2B20 amorphous alloy ribbon and rod with diameter of 4 mm 2.2 Fe-Nb-Hf-Y-B合金的软磁性能 在稀土-Fe基非晶态合金中,用穆斯堡尔效应测出的Fe原子磁矩,显著依赖玻璃成分[17].此外,稀 土元素的添加使稀土-Fe基非晶态合金中出现自旋玻璃状态[18].在Fe73?xNb4Hf3YxB20(x=0, 1, 2..., JIM, 2002, 43(9): 2350?2353. [3] 陈庆军, 范洪波, 孙剑飞, 沈 军, 钱坤明, 线恒泽. Fe-Co-Ni-Zr-Mo-W-B块体非晶合金的玻璃形成能力与热稳定性[J]. 中国有色金属学报, 2005, 15(10): 1555?1559.CHEN Qing-jun, FAN Hong-bo, SUN Jian-fei, SHENG Jun, QIAN Kun......
的 d 19.7 μm微丝[17] Fig.2 d 17.28 mm CCG copper rod ((a), (b))[12] and its product of d 19.7 μm micro-wire (c)[17] by extreme plastic deformation at room temperature without any intermediate... of embedded grain and grain boundary on cyclic deformation behaviors of a copper bicrystal[J]. Acta Metallurgica Sinica, 1999, 35(7): 715-720. [37] CLARK W A, WAGONER R H, SHEN Z Y, LEE T C......
Mises准则,当晶体材料产生塑性变形时,每个晶粒必须至少有5个独立滑移系,由于镁晶胞的晶轴比c/a为1.624,只有(0001)基面和
R来分析不同成分合金中的析出相类型.参数R被定义为w(Fe)/[w(Fe)+w(Nb)-0.3%],其中0.3%为SHISHOV所认为的Nb元素在基体中的固溶度(质量分数).其物理意义是合金中可能参与形成析出相的合金元素Nb与Fe的质量分数之比.其分析结果如表3所列. 表3 不同成分Zr-Sn-Nb-Fe合金中的析出相类型[44] Table 3 Types...+(Zr, Nb)2Fe.当Nb相对于Fe含量极低时,他们推测会出现三相区域6α-Zr+(Zr, Nb)2Fe+ Zr3Fe. TOFFOLON-MASCLET等认为580 ℃时Nb的固溶度约为0.2%,而Fe的固溶度极小,可忽略不计.因而,当尝试用R参数来进行讨论时,须做细微的调整,用R*=w(Fe)/[w(Fe)+w(Nb0.2)]将更合适.1,3和5 3个两相区分别对应R*1→0,R*3......
的稳定性都低于有Fe参与的Zr2(Fe, Ni)和Zr(Fe, Cr)2的稳定性,而两种合金中Fe的含量相对较高,容易参与到上述两种粒子中去,使得Zr2Ni和ZrCr2粒子很难稳定存在. CHARQUET等[42]对合金成分在ASTM标准之外的改进Zr-4合金进行了系列研究,发现当合金的w(Fe)/w(Cr)＜4时,只有Zr(Fe, Cr)2粒子存在,而当w(Fe)/w(Cr)＞4时会形成Zr3Fe或Zr2Fe,GARZAROLLI等[43]也有同样的发现.EUCKEN[44]也得出相似结论,但认为Zr-Fe粒子出现的w(Fe)/w(Cr) 临界值为2,而不是4.RUHMANN[45]认为当Zr-4合金中的w(Fe)/w(Cr)＞5时,Zr3Fe成为主要的析出相,但认为并没有一个确定的临界值,w(Fe)/w(Cr)＜5时Zr-Fe粒子也会存在,但数量很少.参考上述观点,可以认为,在常规......
K A, HUNT J D. Lamellar and rod eutectic growth [J]. Transactions of the Metallurgical Society of AIME, 1966, 236: 1129-1142. [11] KURZ W, GIOVANOLA B, TRIVEDI R. Theory of microstructural development...-Tref)+ βs(wl-wref)],水平方向的体积力为0.依据Kozeny- Carman公式[25],当相密度为常量时,渗透率可表示为 ,fl为液相质量分数,K0为渗透率系 数,由所研究的多相区域结构确定.则在完全凝固区(fl=0)和液相区(fl=1),渗透率分别为Kp=0和Kp=?. (3) 式中:有效导热系数为固,液相的混合值κeff=κlfl+κsfs. (4) 式中:w为溶质Si的浓......
pattern of residue Figure 3(a) shows that the crystals in the residue mainly exist in rod, lamellar, spherical, and other irregular forms with particle size mostly less than 1 μm. EDX analyses... Z H, SHU W H, ZHANG Z Q, LAN C Y, WONG M H. Evaluation of major constraints to revegetation of lead/zinc mine tailings using bioassay techniques [J]. Chemosphere, 2002, 47: 1103-1111. [5] GUO Jian......
with pH 7.66 at a temperature of 37 °C and open to air. Three-electrode cell was used for electrochemical measurements: the counter electrode was made of graphite rod, the working electrode...: 1416-1422. [12] ZHOU W, SHAN D, HAN E H, KE W. Structure and formation mechanism of phosphate conversion coating on die-cast AZ91D magnesium alloy [J]. Corrosion Science, 2008, 50: 329-337. [13] HEAKAL F E T......
was conducted in a 6 mol/L KOH solution at 80 °C. The alloys were immersed in an electrolyte, connected to a DC source and polarized as the cathode. A graphite rod with 10 mm in diameter and 100 mm in length... of hydrogen fuel cell cars [J]. Vacuum, 2006, 80: 1084-1089. [2] WU Y, LOTOTSKY M V, SOLBERG J K, Yartys V A, Han W, Zhou S X. Microstructure and novel hydrogen storage properties of melt-spun Mg-Ni-Mm......
