Article
Optics
I Esmail, H. Yazdani Sarvestani, J. Gholipour, B. Ashrafi
Summary: The study focuses on optimizing picosecond laser processing parameters to achieve precise and defect-free cut geometries on industrial grade alumina ceramics. By using a circular wobble laser pattern, it was found that greater cut depths can be achieved at lower linear speeds and wobble frequencies. The research also introduced optimal process parameters for balancing quality and material removal rate.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
W. Amsellem, H. Yazdani Sarvestani, V. Pankov, Y. Martinez-Rubi, J. Gholipour, B. Ashrafi
Summary: This study explores the use of a fiber picosecond laser for subtractive manufacturing of SiC ceramic, aiming for minimal surface damage and high precision. Various laser processing parameters were analyzed to achieve deep high-quality cuts with minimum surface roughness and redeposited material. The study also identified processing parameters for shallow and deep high-precision SiC cutting.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Naifei Ren, Kaibo Xia, Huayu Yang, Fuqiang Gao, Shiwen Song
Summary: The study demonstrated that water-assisted femtosecond laser drilling significantly improved the efficiency and quality of drilling in alumina ceramics, particularly at lower pulse repetition rates. Water assistance reduced residual debris and redeposition of ablated material on the hole sidewalls, enhancing the characteristics of the holes.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Analytical
Ting Guo, Chao Wang, Junyong Zeng, Wenqi Wang, Zhenyu Zhao
Summary: Laser polishing was used to improve the surface properties of alumina ceramics by reducing the surface roughness. A response surface experimental design scheme was used to establish a mathematical model and optimize the process parameters for laser polishing. The results showed that the optimized parameters led to significant improvements in surface roughness, wear resistance, and hardness.
Article
Materials Science, Ceramics
Xiaodong Wang, Xuesong Mei, Xintian Wang, Bin Liu, Zheng Sun, Renhan Lian
Summary: This study investigates the online trimming method of ceramic cores and proposes an optimization method for laser parameters based on the orthogonal experiment method. Additionally, a path optimization method is proposed to improve the quality and accuracy of the trimming profile. Experimental results demonstrate that the online trimming method has advantages of high precision and high yield compared to the manual method, making it highly valuable for applications in the aviation field.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Analytical
Chao Wang, Zhenyu Zhao, Houming Zhou, Junyong Zeng, Zhanwang Zhou
Summary: Laser polishing is an efficient and noncontact method for surface treatment. This study investigated the effects of laser power, scanning speed, and pulse frequency on the polishing of alumina ceramics. The optimal polishing parameters were obtained and the correctness of the experimental results was verified through numerical simulation.
Article
Materials Science, Ceramics
Hao Yuan, Chun Li, Bo Yang, Jianwei Gao, Wenqi Zhao, Mingshen Li, Jian Cao
Summary: The time consumption of ceramic joining methods has hindered the widespread application of ceramic components in the industry. The recently proposed ceramic joining approach via ultrashort pulse laser welding could be a feasible solution to this problem. Through optimizing welding parameters and comprehensively characterizing joint microstructures and fracture morphology, the achieved four-point bending strength reached approximately 60% of that of the base material. The welding mechanism was hypothesized from the perspective of nonlinear absorption of the ultrashort pulse laser by the alumina ceramic. These results are expected to provide an in-depth understanding of the emerging technology.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2024)
Article
Chemistry, Physical
Jian Wu, Hai Zheng, Mingliang Tang, Zhuqing Yu, Zhigang Pan
Summary: In this study, SiC nanoparticles were used to enhance the mechanical properties of alumina ceramics. The rheological properties of the slurry were characterized, and the sintering shrinkage and strength of the composite ceramics were tested. The addition of 8 wt% SiC nanoparticles increased the flexural strength and fracture toughness of the ceramics by 42% and 41% respectively.
Article
Chemistry, Physical
Duran Kaya, Mohamed Abdelmoula, Gokhan Kucukturk, David Grossin, Artemis Stamboulis
Summary: A new preheating mechanism using two laser systems was developed and successfully printed ceramics with a single-step AM method.
Article
Automation & Control Systems
Guangliang Li, Dongyan Shi, Shanshan Hu, Chunlong Ma, Dongze He, Kai Yao
Summary: Underwater laser drilling of alumina ceramics is effective in improving hole quality, with both water and bubbles playing significant roles in reducing recast layer thickness and splatter amount, as well as decreasing the thermal effect of the laser. The collapse of bubbles causes shock and vibration, leading to recast layer removal, although the cooling effect of water reduces cooling time. The study provides valuable insights for engineering applications.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Physics, Multidisciplinary
Razyeh Behbahani, Hamidreza Yazdani Sarvestani, Erfan Fatehi, Elham Kiyani, Behnam Ashrafi, Mikko Karttunen, Meysam Rahmat
Summary: Laser machining is a flexible manufacturing technique that relies on simulation methods and machine learning to optimize processing parameters and reduce experimental costs. These techniques can be applied to a variety of ceramic laser machining processes.
Article
Chemistry, Physical
A. Mangababu, Chandu Byram, Jagannath Rathod, Dipanjan Banerjee, S. V. S. Nageswara, R. Sai Prasad Goud, Venugopal Rao Soma
Summary: This study demonstrates the simultaneous fabrication of GaAs nano-particles and nanostructures using picosecond pulsed laser ablation in liquids, showcasing their versatile multifunctional applications. The synthesized NPs and NSs exhibit potential applications in two-photon absorption, anti-reflection properties, Raman scattering detection, and more.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Peiyuan Kang, Yang Wang, Blake A. Wilson, Yaning Liu, Napat Dawkrajai, Jaona Randrianalisoa, Zhenpeng Qin
Summary: By stimulating gold nanoparticles with single picosecond laser pulses, an anomalous fragmentation mechanism was discovered that deviates from the three recognized mechanisms. The fragmentation was weakly dependent on particle size, occurring below the particle melting point and non-thermal mechanism threshold. This study proposes a framework based on near-field enhancement and nanoparticle surface melting to explain the observed picosecond laser-induced fragmentation.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Food Science & Technology
Anna R. Ziefuss, Tim Hupfeld, Sven W. Meckelmann, Martin Meyer, Oliver J. Schmitz, Wiebke Kaziur-Cegla, Lucie K. Tintrop, Torsten C. Schmidt, Bilal Gokce, Stephan Barcikowski
Summary: This study introduces a method of preparing cold-brewed coffee using an ultrashort-pulsed laser system. By applying the laser system to the suspension of coffee powder without heating, caffeine and aromatic substances can be efficiently extracted within a few minutes. The resulting cold-brewed coffee has a similar composition and taste to traditional cold-brewed coffee, with more volatile substances preserved.
NPJ SCIENCE OF FOOD
(2022)
Article
Optics
Xiangpeng Yang, Decai Li, Xiangshen Meng, Qian Li, Huaiwei Zhang, Jiying Peng
Summary: This paper investigates the intensity-dependent nonlinear optical properties of Fe3O4 nanoparticle suspension exposed to 1064 nm picosecond laser pulses using the Z-scan technique. The study reveals a new type of saturation and reverse-saturation absorption curves at different excitation power levels, accompanied by a corresponding change in nonlinear refraction behavior from self-defocusing to self-focusing as the exciting energy increases. These tunable nonlinear optical properties are attributed to intervalence charge transfer.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
Yanchun Xie, Xiaodong Wang, Shenshen Cui, Jiali Hu, Yongcun Wei, Yi Lian, Anwu Xuan, Bin Yu, Erlin Zhang
Summary: In this study, Ti-xFe (x = 3,5,9 wt%) alloys were surface modified by micro-arc oxidation (MAO) to improve their antimicrobial properties and biocompatibility. The results showed that increasing the oxidation voltage greatly enhanced the roughness and hydrophilicity of Ti-xFe-MAO alloys. The Ti-xFe alloys micro-arc oxidized at 250 V and 300 V exhibited improved corrosion resistance and excellent antimicrobial and cytocompatibility properties, making them suitable for orthopedic implant materials.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuting Hao, Zuoyan Ye, Lili Wang, Minheng Ye, Hui Dong, Chao Wang, Yunchen Du
Summary: This study focuses on the modification of PEO coatings on Ta-12W alloy using NH4F additive. The results show that ultra-low porosity coatings can be prepared by optimizing the NH4F content. The formation process of specific structures on the coating surface is discussed, and the effects of NH4F concentration and treatment duration on coating characteristics are investigated.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Yuanzhuo Liu, Linjiang Chai, Tao Yang, Chaodan Hu, Chuanmei Wang, Guoqiang Xi
Summary: By employing a pulsed laser, laser cladding was performed on IN718 alloy pre-coated with CrCoNi-TiC/SiC powders and three defect-free coatings were successfully prepared. The addition of TiC and SiC powders generated fine carbides dispersed in the coatings and led to changes in grain and substructure morphologies, resulting in increased hardness and wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
M. Ghaemi, A. Lopez-Cazalilla, K. Sarakinos, G. J. Rosaz, C. P. A. Carlos, S. Leith, S. Calatroni, M. Himmerlich, F. Djurabekova
Summary: The use of high-power impulse magnetron sputtering can result in dense and uniform niobium films on all surfaces of superconducting rf cavities, as simulated and investigated in this study.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Jiaheng Du, Xinli Fan, Dongqin Xiao, Wuxiang Wang, Yiran Yin, Zhong Li, Kui He, Yanfei Tan, Jiyuan Yan, Gangli Liu, Ke Duan
Summary: This study investigated the electrophoretic deposition (EPD) of magnesium oxide (MgO) coatings on micro-arc oxidized titanium (MAO-Ti) and evaluated their in vitro antibacterial properties and biocompatibility. The results showed that MgO coatings significantly reduced bacterial numbers and biofilm formation, while also demonstrating good cytocompatibility and induction of osteoblast mineralization.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Samiksha Moharana, Yuichi Otsuka, R. Gnanamoorthy
Summary: The addition of titania to HAp coatings improves their wear resistance and reduces damage to titanium implants caused by debris generation. This study evaluates the fretting wear resistance of titania-added HAp suspension plasma spray coating and finds that it exhibits reduced friction coefficient and increased wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Li-Ping Wu
Summary: The functional hazenite coating deposited on AZ31 Mg alloy showed improved roughness and hydrophilicity, enhanced biocompatibility, reduced degradation rate, and decreased susceptibility to stress corrosion cracking.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Ning Tian, Delei Xu, Jinfei Wei, Bucheng Li, Junping Zhang
Summary: This study reports the preparation of a superhydrophobic and anti-bacterial fabric for face masks. The fabric exhibits high superhydrophobicity and excellent moisture resistance, enabling functionality effectiveness in cold weather conditions. The fabric also demonstrates remarkable anti-bacterial activity against E. coli, attributed to the synergistic effect of superhydrophobicity and embedded ZnO nanoparticles. This superhydrophobic anti-bacterial fabric holds great potential for various practical applications in personal protective equipment, healthcare, and disease prevention.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Katharina Beck, Anke S. Ulrich, Andreas K. Czerny, Emma M. H. White, Martin Heilmaier, Mathias C. Galetz
Summary: Refractory metal based alloys have great potential as structural materials for high-temperature applications due to their high melting points. However, they are prone to catastrophic oxidation at around 700 degrees C. This study investigated the effect of aluminium diffusion coatings on the oxidation resistance of pure molybdenum, niobium, tantalum, and tungsten. The results showed that the aluminization improved the oxidation behavior and decreased the oxide growth rate for molybdenum and tantalum.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Wenwen Shuai, Haijun Dou, Zhichen Guan, Wei Qian, Zhibao Li, Yinqun Hua, Jie Cai
Summary: This study synthesized (Y1-xLax)3Al5O12 (x = 0, 0.1, 0.2, 0.3) materials by doping lanthanum ions, and found that the doped materials exhibited improved mechanical properties and thermal expansion coefficient, as well as enhanced resistance to CMAS corrosion. These materials have potential applications.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Xianglei Liu, Jiahui Ding, Wanbo Hou, Xinhao Shi, Tao Feng, Xiangyuan Meng, Shifeng Wen, Mingde Tong, Zhufeng Yue
Summary: A composite coating was developed to improve the adhesion, wear resistance, and corrosion resistance, which exhibited significant enhancements in these properties.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hongxuan Xing, Jidong Li, Xianwei Hu, Liang Tian, Renyun Zhang, Yiyong Wang
Summary: By depositing a Cu/Co-Mo corrosion-resistant plating layer on the surface of 6061 Al alloy, the bonding strength between the alloy and the plating layer can be improved and the corrosion resistance can be enhanced. The composite coating forms an obvious three-layer structure with Co-Mo coating exhibiting amorphous characteristics and Co3Mo phase composition. The composite coating improves the corrosion resistance and hardness of the substrate, effectively protecting the 6061 Al alloy.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Fan Yang, Debin Wang, Tianrun Li, Baijun Yang, Suode Zhang, Jianqiang Wang
Summary: The impact-corrosion behavior of monolayer and hierarchical Fe-based amorphous coatings fabricated by HVAF was investigated in 3.5 wt% NaCl solution. The monolayer coating exhibits corrosion failure with increased impact energy, while the hierarchical coating shows improved resistance. However, at high impact energies, both coatings experience corrosion degradation.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Shoaib Ahmad, Muddasir Nawaz, Solaiman Mohammad, R. A. Shakoor, Ramazan Kahraman, Talal Mohammed Al Tahtamouni
Summary: This research presents a novel self-healing anti-corrosion composite coating that demonstrates higher inhibition efficiency and self-healing effect, providing protection for metallic structures against corrosive environments.
SURFACE & COATINGS TECHNOLOGY
(2024)
Article
Materials Science, Coatings & Films
Hui-Wen Peng, Chun-Hway Hsueh
Summary: A series of (CoCrNi)100-x-ySixNdy medium entropy alloy films with manipulated metalloid element, Si, and rare earth element, Nd, were synthesized using magnetron three-target co-sputtering. The films showed different structures and mechanical properties with varying Si and Nd contents. The optimized mechanical properties were observed in the film with Si0.61Nd5.14, attributed to precipitation strengthening and grain refinement.
SURFACE & COATINGS TECHNOLOGY
(2024)