| 1. | Phase structure characteristic of fe - cr - based cladding layer prepared by plasma beam 基等离子熔覆层的相结构特征 |
| 2. | Effect of matrix materials on microstructure and microhardness of nigrbsi cladding layers by laser 激光熔覆层组织及硬度的影响 |
| 3. | Study on solidification feature and the solidification microstructure control of laser cladding layer 激光熔覆层凝固特征与凝固组织控制研究 |
| 4. | We have grown ingaas / algaas strained quantum well laser by mbe . we studied the doped density in the cladding layer 采用分子束外延设备mbe ( molecularbeamepitaxy )对所设计的应变量子阱结构激光器进行晶体生长。 |
| 5. | The results show that the dendrite , micropore and tensile stress in cladding layer ac the main factors reducing the fatigue properties 结果表明,表面激光熔覆会显著降低材料的疲劳性能,在99 %可靠度的前提下,熔覆试样的安全寿命约为基材试样的27 % 。 |
| 6. | The results show that with the increase of the powder feeding rate , the cladding layer gets thicker , its structure finer and its hardness changes slightly only 实验结果表明,随粉末送给率的增加,熔覆层厚度增加,熔覆层组织细化,熔覆层的硬度变化不大。 |
| 7. | The structure of the strained quantum well laser has been optimized , not only the well layer , the barrier layer , the waveguide layer and the cladding layer but also the content of al , in have been studied and designed 对应变量子阱激光器的结构进行了优化设计,对半导体激光器的阱层、垒层、波导层和限制层的厚度及in 、 al元素的含量进行了研究和设计。 |
| 8. | The experiments on substrate material and laser cladding specimens fur comparing the fatigue life were carried out , and the factors affecting fatigue properties of the laser cladding layer on the surface of aluminum alloy were investigated 摘要对铝合金试样表面进行激射光熔覆处理,分析激光熔覆层的显微组织,并对熔覆试样和基材试样进行疲劳寿命对比实验。 |
| 9. | Regard the ni - based high - temperature alloy as substrate and the mixed powder by oneself as layer cladding , the microstructure of laser cladding layers under different craft parameters was studied by cw co2 laser 摘要为了研究工艺参数时激光熔覆层微观形貌的影响,以co2连续激光器为热源,在镍基高温合金基体表面熔覆自配粉末,对不同工艺参数下熔覆层的微观形貌进行了分析。 |
| 10. | By side - polished , the cladding layer of one side of fiber bragg grating can be reduced to several micrometers . the radiation field can transmit the cladding layer to external medium . when the external refractive index changes , the effective refractive index of fiber changes and the center wavelength of d - shaped fiber bragg grating shifts accordingly 研磨后,光纤布喇格光栅的一侧包层减小至几微米,其辐射场可通过包层透射到被传感物质,因而被传感物质的折射率变化可以改变光纤的有效折射率,从而使光栅的布喇格波长产生偏移。 |