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SG-7.5-12型井式电阻炉中进行.液压机最大挤压力为100 T,液压机冲头接触熔体后保压30 s.模具所用材料为H13钢,在模具型腔凹模以及凸模刷一层石墨机油,以方便脱模；同时在超声工具杆表面刷一层氧化锌涂料,保护工具杆表面不被高温熔液腐蚀.图2为实验装置图:首先在预热坩埚中熔化Al-Cu合金,并将预热的变幅杆水平插入模具.最终得到铸锭的尺寸为d 60 mm×70 mm.为了验证耦合场对合金熔体......
m[11-12].此外,山东招远玲珑金矿,云南会泽铅锌矿,广东韶关凡口铅锌矿,湖北鄂州程潮铁矿等都基本已进入深部开采[8, 13-14]. 从20世纪90年代中期至今,国内外众多专家学者就开始关注金属矿山深部开采未来的发展趋势,作了很多前瞻性的展望和研究,提出了许多很好的建 议[15-30].例如韩志型和王维德[15]主要结合加拿大硬岩矿山深部开采情形分别从深部开采方法,采矿诱发地......
structure. An interesting feature is that the first-order magnetic phase transition (FOMT) temperature in Gd5(Si1-xGex)4 is strongly dependent on the molar ratio Si to Ge, as shown in Fig.4 [4......
NaCl含量对蠕变性能的影响[27] Feg.23 Effect of NaCl/Na2SO4 ratio on steady-state creep rate (),time to fracture (tf) and total elongation at rupture (d)[27] 25所示[27].在高应力区域,蠕变激活能高,在空气环境中为730 kJ/mol,在热腐蚀环境中......
Dy的氧化物,氟化物[33, 61-62]和氮化物[63]以及其他氧化物[64],Al-Cu[65]和Cu-Zn[66]等共晶合金.晶界掺杂方法主要利用了磁体烧结过程中晶界上有部分液相形成的特点,使添加物与液相迅速反应,富集于Nd2Fe14B基体相的交汇处和晶界处,实现更好的磁隔离效果；或者使Dy元素主要分布于晶界附近的晶粒内,从而提高磁体矫顽力,这主要是以形核场理论为依据加以解释[67].此外... alignment and coercive force decrease ratio in NdFeB sintered magnets[J]. J Magn Magn Mater, 2013, 336: 88-92. [13] FIDLER J. On the role of the Nd-rich phases in sintered Nd-Fe-B magnets[J]. IEEE Trans Magn......
, DUPFC). The next step is to determine the genetic algorithm settings which are number of generations, initial population size, number of elite children, and ratio of crossover fraction, fitness limit......
filtering for the change in the speaker activity detection. Even though, the filtering provides separation of the signal with better signal interference ratio, the computational complexity because... and ZN be the generation of lion with pride considered for the Lion algorithm. Here, M denotes the male lion, F denotes the female lion and N denotes the nomad lion. The values of ZM and ZF are given......
transferred from the matrix to the BLA particles. From the results, it is clear that the BLA particles strengthen the AMMCs with respect to mass ratio compared with Al-4.5%Cu alloy. ALANEME and ADEWALE [63......
of damage variables (the ratio of the dissipated energy to the constitutive energy) increased exponentially with strain. The damage constitutive models under cyclic loading have reasonable errors......
as the inner layer [34, 75]. ZHOU et al [77] found that the ratio of the raw materials, power size and sintering time would influence the thickness of the coating. 5.2 Chemical vapor deposition (CVD) CVD......
