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学者姓名：肖荣诗
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Abstract ：
Si is a highly promising anode material due to its superior theoretical capacity of up to 3579 mAh/g. However, it is worth noting that Si anodes experience significant volume expansion (>300%) during charging and discharging. Due to the weak adhesion between the anode coating and the smooth Cu foil current collector, the volume-expanded Si anode easily peels off, thus damaging anode cycling performance. In the present study, a femtosecond laser with a wavelength of 515 nm is used to texture Cu foils with a hierarchical microstructure and nanostructure. The peeling and cracking phenomenon in the Si anode are successfully reduced, demonstrating that volume expansion is effectively mitigated, which is attributed to the high specific surface area of the nanostructure and the protection of the deep-ablated microgrooves. Moreover, the hierarchical structure reduces interfacial resistance to promote electron transfer. The Si anode achieves improved cycling stability and rate capability, and the influence of structural features on the aforementioned performance is studied. The Si anode on the 20 mu m-thick Cu current collector with a groove density of 75% and a depth of 15 mu m exhibits a capacity of 1182 mAh/g after 300 cycles at 1 C and shows a high-rate capacity of 684 mAh/g at 3 C.
Keyword ：
electrochemical performance electrochemical performance laser texturing laser texturing deep ablation deep ablation Si anode Si anode Cu current collector Cu current collector hierarchical micro/nanostructure hierarchical micro/nanostructure
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| GB/T 7714 | Wang, Jingbo , Cao, Li , Li, Songyuan et al. Effect of Laser-Textured Cu Foil with Deep Ablation on Si Anode Performance in Li-Ion Batteries [J]. | NANOMATERIALS , 2023 , 13 (18) . |
| MLA | Wang, Jingbo et al. "Effect of Laser-Textured Cu Foil with Deep Ablation on Si Anode Performance in Li-Ion Batteries" . | NANOMATERIALS 13 . 18 (2023) . |
| APA | Wang, Jingbo , Cao, Li , Li, Songyuan , Xu, Jiejie , Xiao, Rongshi , Huang, Ting . Effect of Laser-Textured Cu Foil with Deep Ablation on Si Anode Performance in Li-Ion Batteries . | NANOMATERIALS , 2023 , 13 (18) . |
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Abstract ：
基于侧吹保护条件下的光纤激光非穿透深熔焊接工艺,模拟了构件的服役环境,对GH3128搭接接头进行了不同循环次数的900℃真空热处理,并对接头组织和显微硬度、室温与高温拉伸及蠕变拉伸性能进行了分析测试,通过分析组织与断口,对GH3128搭接接头的高温力学性能进行了评估.研究结果表明,与无热处理接头相比,热处理后的接头的室温与高温拉伸性能分别提升了35％和20％,蠕变性能大幅提高.接头组织分析结果表明:热处理后的接头枝状组织消熔,晶粒呈粗大等轴晶状态;各断口均呈现出"抛物线"状韧窝,开口方向与拉伸力方向一致,呈韧性断裂特征,且无显微裂纹产生;热处理次数对接头显微硬度、室温及高温拉伸性能的影响不大;随着热处理次数的增加,接头蠕变性能呈减小趋势.
Keyword ：
光纤光学 光纤光学 蠕变性能 蠕变性能 GH3128 GH3128 高温拉伸 高温拉伸 搭接接头 搭接接头 激光焊接 激光焊接
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| GB/T 7714 | 袁振飞 , 蒋劲 , 程智伟 et al. 光纤激光GH3128搭接接头高温力学性能研究 [J]. | 中国激光 , 2022 , 49 (21) : 164-172 . |
| MLA | 袁振飞 et al. "光纤激光GH3128搭接接头高温力学性能研究" . | 中国激光 49 . 21 (2022) : 164-172 . |
| APA | 袁振飞 , 蒋劲 , 程智伟 , 杜欣 , 祁百鑫 , 武强 et al. 光纤激光GH3128搭接接头高温力学性能研究 . | 中国激光 , 2022 , 49 (21) , 164-172 . |
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Abstract ：
针对碳纤维增强树脂基复合材料的切割问题，采用515 nm波长飞秒激光进行切割工艺研究，分别用热影响区宽度、切缝锥角、切割表面粗糙度表征切割质量，用等效切割速度表征切割效率，研究了激光功率、扫描速度、脉冲频率对切割质量和效率的影响规律，并进行最终的工艺优化。结果表明：在激光功率20 W、扫描速度2500 mm/s、脉冲频率50 kHz的条件下，可以获得较优的切割质量与效率，得到的切缝周围热影响区宽度约2μm、切缝锥角约1.5°、切割表面粗糙度约Ra1.6μm。
Keyword ：
碳纤维增强树脂基复合材料 碳纤维增强树脂基复合材料 激光切割 激光切割 飞秒激光 飞秒激光
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| GB/T 7714 | 薛博 , 徐洁洁 , 张寰臻 et al. 碳纤维增强树脂基复合材料飞秒激光精密切割工艺研究 [J]. | 电加工与模具 , 2022 , PageCount-页数: 6 (05) : 35-40 . |
| MLA | 薛博 et al. "碳纤维增强树脂基复合材料飞秒激光精密切割工艺研究" . | 电加工与模具 PageCount-页数: 6 . 05 (2022) : 35-40 . |
| APA | 薛博 , 徐洁洁 , 张寰臻 , 崔梦雅 , 黄婷 , 肖荣诗 . 碳纤维增强树脂基复合材料飞秒激光精密切割工艺研究 . | 电加工与模具 , 2022 , PageCount-页数: 6 (05) , 35-40 . |
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Abstract ：
深空探测是21世纪人类进行空间技术创新、太空资源探索与利用的重要途径，准直器是深空探测器的关键部件。大深度、高空间分辨率栅格准直器的制造在国际上一直是个难题。本文以我国自主研制的硬X射线调制望远镜卫星(HXMT)中能望远镜高精度准直器为例，介绍了自主研发的大深度、高空间分辨率准直器跨尺度栅格结构的激光精密微焊接制造方法、关键工艺技术及成套装备。对于壁厚为70μm、准直孔尺寸为1.17 mm×4.68 mm、深度为67 mm的钽片跨尺度栅格结构，准直孔尺寸精度控制在SymbolqB@20μm之内。
Keyword ：
激光技术 激光技术 跨尺度栅格 跨尺度栅格 微细加工 微细加工 深空探测 深空探测 准直器 准直器 激光精密焊接 激光精密焊接
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| GB/T 7714 | 黄婷 , 杜伟哲 , 苏坤 et al. 深空探测卫星准直器跨尺度栅格结构的激光精密微焊接技术与装备 [J]. | 中国激光 , 2022 , 49 (10) : 28-36 . |
| MLA | 黄婷 et al. "深空探测卫星准直器跨尺度栅格结构的激光精密微焊接技术与装备" . | 中国激光 49 . 10 (2022) : 28-36 . |
| APA | 黄婷 , 杜伟哲 , 苏坤 , 张建超 , 李敬洋 , 祁俊峰 et al. 深空探测卫星准直器跨尺度栅格结构的激光精密微焊接技术与装备 . | 中国激光 , 2022 , 49 (10) , 28-36 . |
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Abstract ：
采用光纤激光对GH3536进行了激光选区熔化(SLM)3D打印,对4 mm厚轧制固溶态GH3128(R-GH3128)平板进行了对接焊接研究.利用光学显微镜(OM)、扫描电子显微镜(SEM)、电子背散射衍射(EBSD)、X射线能谱分析仪(EDS)、显微硬度仪及拉伸试验机对焊缝成形、显微组织、显微硬度、接头强度及断口形貌进行了分析.结果表明,3D-GH3536/R-GH3128的焊缝组织主要为柱状晶和等轴晶,焊缝内直径小于50μm的晶粒数量占比为62.2％.显微硬度测试结果表明,焊缝的平均显微硬度值为286 HV.拉伸试验结果表明,接头上下部分的抗拉强度基本一致,约为3D-GH3536母材的93％,断裂方式为韧性断裂.
Keyword ：
力学性能 力学性能 激光焊接 激光焊接 激光技术 激光技术 3D打印 3D打印 3D-GH3536/R-GH3128 3D-GH3536/R-GH3128 微观组织 微观组织
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| GB/T 7714 | 程智伟 , 祁百鑫 , 张桐 et al. 3D-GH3536/R-GH3128异种高温合金光纤激光对接焊接工艺研究 [J]. | 中国激光 , 2022 , 49 (22) : 150-158 . |
| MLA | 程智伟 et al. "3D-GH3536/R-GH3128异种高温合金光纤激光对接焊接工艺研究" . | 中国激光 49 . 22 (2022) : 150-158 . |
| APA | 程智伟 , 祁百鑫 , 张桐 , 袁振飞 , 杜欣 , 武强 et al. 3D-GH3536/R-GH3128异种高温合金光纤激光对接焊接工艺研究 . | 中国激光 , 2022 , 49 (22) , 150-158 . |
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Abstract ：
采用6 kW多模光纤激光器进行了Ta-10W难熔合金的光纤激光焊接工艺研究。利用高速摄像机、光学显微镜、扫描电镜、显微硬度仪及拉伸试验机对焊缝成形、熔池形态、飞溅物形态、显微组织、显微硬度、接头强度及断口形貌进行分析。研究结果表明，在焦点位于板材表面且焦点直径为0.3 mm的聚焦参数下，当焊接速度为2～3 m/min,激光功率为1.5～2.0 kW时，焊接模式由热导焊转变为深熔焊。Ta-10W深熔焊时焊缝成形良好，焊接飞溅大且飞溅物不易附着于板材，焊缝呈钉头形。3 mm厚对接接头的焊缝组织主要为柱状晶，在焊缝靠上的位置，主要为垂直于板厚方向的细长晶粒；在焊缝中部与下部，形成的则是细等轴晶粒。拉...
Keyword ：
微观组织 微观组织 难熔合金 难熔合金 激光技术 激光技术 激光焊接 激光焊接 力学性能 力学性能 Ta-10W Ta-10W
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| GB/T 7714 | 杜欣 , 祁百鑫 , 赵振家 et al. Ta-10W难熔合金光纤激光焊接工艺研究 [J]. | 中国激光 , 2022 , 49 (16) : 36-44 . |
| MLA | 杜欣 et al. "Ta-10W难熔合金光纤激光焊接工艺研究" . | 中国激光 49 . 16 (2022) : 36-44 . |
| APA | 杜欣 , 祁百鑫 , 赵振家 , 张桐 , 武强 , 邹江林 et al. Ta-10W难熔合金光纤激光焊接工艺研究 . | 中国激光 , 2022 , 49 (16) , 36-44 . |
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Abstract ：
在Cu(NO_3)_2前驱体溶液中添加硅纳米颗粒，采用飞秒激光在透明基底表面成功直写了导电金属铜微结构。前驱体溶液中的硅颗粒作为吸光粒子吸收激光能量后对溶液进行加热，使Cu~(2+)还原为金属铜并沉积在基底表面。结果表明：当激光光强为5.32×10~9～8.51×10~9 W·cm~(-2)、扫描速度为100～500 mm·s~(-1)时，微结构主要由铜、Cu_2O及微量硅组成，铜含量及微结构的导电性随着光强的增加或扫描速度的降低而逐渐增加；在光强为5.32×10~9 W·cm~(-2)、扫描速度为100 mm·s~(-1)的条件下，铜微结构的方阻为0.28Ω·sq~(-1),电阻率为4.67...
Keyword ：
激光直写技术 激光直写技术 激光技术 激光技术 吸光粒子 吸光粒子 铜微结构 铜微结构 导电性 导电性 飞秒激光 飞秒激光
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| GB/T 7714 | 崔梦雅 , 黄婷 , 肖荣诗 . 基于纳米颗粒热效应的飞秒激光高效直写金属铜微结构 [J]. | 中国激光 , 2022 , 49 (08) : 161-171 . |
| MLA | 崔梦雅 et al. "基于纳米颗粒热效应的飞秒激光高效直写金属铜微结构" . | 中国激光 49 . 08 (2022) : 161-171 . |
| APA | 崔梦雅 , 黄婷 , 肖荣诗 . 基于纳米颗粒热效应的飞秒激光高效直写金属铜微结构 . | 中国激光 , 2022 , 49 (08) , 161-171 . |
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Abstract ：
Femtosecond laser has been widely utilized for modification of crystal structure to achieve desired functions. So far, however, the effect of crystallographic orientation on the induced structure by femtosecond laser processing has yet been comprehensively studied. The present work is undertaken in an attempt to fill this gap in our knowledge. To this end, commercial-purity Si is used as a target material and high-resolution transmission electron microscopy as well as electron backscatter diffraction are applied to examine the irradiation-induced microstructural changes. The structural response of the pulsed material is found to be principally influenced by the crystallographic orientation of the target surface. Specifically, at the surface orientation close to {111}, a pronounced amorphization effect is observed whereas no disordered material is detected at the orientations close to {100}. This phenomenon could be explained by the lowest crystallization speed required by the (111) surface due to its smallest surface energy. Compared with nanosecond laser, non-thermal melting induced by femtosecond laser induces mild thermal gradient and favors recrystallization.
Keyword ：
Amorphization Amorphization Crystallographic orientation Crystallographic orientation Silicon Silicon Femtosecond laser Femtosecond laser
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| GB/T 7714 | Zhang, Xin , Zhang, Liang , Mironov, Sergey et al. Effect of crystallographic orientation on structural response of silicon to femtosecond laser irradiation [J]. | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING , 2021 , 127 (3) . |
| MLA | Zhang, Xin et al. "Effect of crystallographic orientation on structural response of silicon to femtosecond laser irradiation" . | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING 127 . 3 (2021) . |
| APA | Zhang, Xin , Zhang, Liang , Mironov, Sergey , Xiao, Rongshi , Guo, Liang , Huang, Ting . Effect of crystallographic orientation on structural response of silicon to femtosecond laser irradiation . | APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING , 2021 , 127 (3) . |
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Abstract ：
Industrial application of copper often requires a joining. Unfortunately, a commercial laser welding of this material is challenging due to extremely high reflectivity of copper at the near-infrared wavelength. In this work, the sound copper joints were produced at relatively high welding speed of 15 m/min by using a pressure-assisted fiber-laser welding. It was theoretically shown that the material melting arisen from a convergence of multiple reflections of the laser beam. By using electron backscatter diffraction (EBSD), it was found that microstructural changes were induced by a laser-induced thermal effect as well as a roller-induced pressure. It was deduced that the molten material solidified before feeding to the pressure rolls and thus it experienced a notable plastic strain during the welding process. The present work provides an effective method for commercial joining of high-reflective metals by using the near-infrared fiber laser.
Keyword ：
Microstructure Microstructure Laser welding Laser welding Copper Copper Weld formation mechanism Weld formation mechanism
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| GB/T 7714 | Zhang, Jingquan , Huang, Ting , Mironov, Sergey et al. Laser pressure welding of copper [J]. | OPTICS AND LASER TECHNOLOGY , 2021 , 134 . |
| MLA | Zhang, Jingquan et al. "Laser pressure welding of copper" . | OPTICS AND LASER TECHNOLOGY 134 (2021) . |
| APA | Zhang, Jingquan , Huang, Ting , Mironov, Sergey , Wang, Dong , Zhang, Qingwei , Wu, Qiang et al. Laser pressure welding of copper . | OPTICS AND LASER TECHNOLOGY , 2021 , 134 . |
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Abstract ：
Although laser welded Al?Li alloys show great potential for application in aerospace industry, the detailed relationship between local hardness and complex microstructure remained unclear. In the present study, relationship between precipitation behavior and local hardness in a defect-free laser pressure weld of Al?Li alloy 2198 was systematically examined by transmission electron microscopy. Hardness profile of the laser pressure weld was reduced in the vicinity of the weld center, mainly explained by size and density of the strengthening precipitates. Moreover, post-weld aging increased the density of strengthening precipitates in the precipitate dissolved regions, increasing their hardness values markedly. On the other hand, a few precipitates were formed in the precipitate-coarsened regions during post-weld aging, which slightly increased the local hardness. The variation in hardness during post-weld aging could be well correlated with the precipitation behavior in each region of the laser pressure weld.
Keyword ：
Precipitation sequence Precipitation sequence Microstructural characterization Microstructural characterization Hardness profile Hardness profile Artificial aging Artificial aging Al?Li alloy Al?Li alloy Laser pressure welding Laser pressure welding
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| GB/T 7714 | Zhao, Tianbo , Sato, Yutaka S. , Xiao, Rongshi et al. Hardness distribution and aging response associated with precipitation behavior in a laser pressure welded Al ? Li alloy 2198 [J]. | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING , 2021 , 808 . |
| MLA | Zhao, Tianbo et al. "Hardness distribution and aging response associated with precipitation behavior in a laser pressure welded Al ? Li alloy 2198" . | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 808 (2021) . |
| APA | Zhao, Tianbo , Sato, Yutaka S. , Xiao, Rongshi , Huang, Ting , Zhang, Jingquan . Hardness distribution and aging response associated with precipitation behavior in a laser pressure welded Al ? Li alloy 2198 . | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING , 2021 , 808 . |
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