| 1. | Test method for carbon concentration of semi - insulating monocrystal gallium arsenide by measurement infrared absorption method 半绝缘砷化镓单晶中碳浓度的红外吸收测试方法 |
| 2. | The process by which the surface carbon concentration of a ferrous alloy is increased by diffusion from the surrounding environment 从周围环境中向铁基合金表面扩散碳,从而使其表面碳浓度提高的工艺过程。 |
| 3. | Hrtem studies indicate that the si1 - xcx alloy has a high carbon concentration and possesses an ordered superlattice structure 电子衍射和hrtem表明该材料具有传统硅碳材料所不具备的长程有序和超点阵结构。 |
| 4. | In the dispersal dislocation area , the variation of carbon concentrations is very small in dislocation areas and perfect crystal lattice areas 分散排列的高密度和低密度位错区,位错线上和完整区碳浓度变化不大。 |
| 5. | With the software of simulating low - pressure vacuum carburizing process and computer control system , carburizing process parameters are controlled accurately . the minimum error of carburizing layer depth , the optimal distribution of carbon concentration in carburizing layer and the minimum distortion are insured 均匀布置鼠笼状加热元件和多组渗碳气氛喷嘴,并对渗碳参数进行精确控制,可保证零件最小的渗层深度误差最佳的渗层碳浓度分布。 |
| 6. | The volume expansion played a major role in determining its magnetic properties . complicated magnetic phase transitions induced by external magnetic field were found in carbonization of lafe _ ( 11 . 4 ) al _ ( 1 . 6 ) compound with low carbon concentration . and the temperature of phase transition depends on magnetic field strongly 同时发现,碳含量较低时, lafe _ ( 11 . 4 ) al _ ( 1 . 6 )碳化物在磁场诱导下呈现出有趣的复杂磁相变,相变温度强烈依赖于外加磁场。 |
| 7. | The mo element is likely to play a crucial role in the growth process of the si1 - xcx alloy , since it can both reduce the energy required for breaking up c clusters and contribute to surface modification , which are of great benefit to enhance the carbon concentration and induce an ordered structure 金属mo的存在可以提高c原子在生长表面附近的溶解度和扩散速度;同时mo引起的表面重构类似一个生长低维结构的模板,诱导si原子和c原子向各自能量最稳定的位置择向移动,形成最终的有序结构。 |