Results 41 to 50 of about 21,821,173 (350)

Laser processing of alumina ceramic by spatially and temporally superposing the millisecond pulse and nanosecond pulse train.

Optics Express, 2020
A novel combined laser pulses (CLPs) consisting of a millisecond (ms) pulse and an assisted nanosecond (ns) pulse train was proposed for drilling alumina ceramic.
Xianshi Jia, Guangzhi Zhu, Yudong Zhang, Yongqi Chen, Hailin Wang, P. Shan, Kozlov Aleksei, Xiao Zhu   +7 more
semanticscholar   +1 more source

Cryogenic Mechanical Alloying of Poly (ether ether ketone) - Polycarbonate Composite Powders for Selective Laser Sintering [PDF]

, 1999
Mechanical alloying is a solid state processing technique traditionally used in the metallurgical industry to extend solubility limits in alloy systems. Mechanical alloying can also be used to blend polymer systems at ambient or cryogenic temperatures.
Kander, R., Schultz, J., Suchicital, C.
core   +1 more source

A Review of Femtosecond Laser Processing of Silicon Carbide

Micromachines
Silicon carbide (SiC) is a promising semiconductor material as well as a challenging material to machine, owing to its unique characteristics including high hardness, superior thermal conductivity, and chemical inertness.
Quanjing Wang, Ru Zhang, Qing-Qing Chen, Ran Duan   +3 more
semanticscholar   +1 more source

The Influence of Treatment Parameters on the Microstructure, Properties and Bend Angle of Laser Formed Construction Bars

Archives of Metallurgy and Materials, 2016
In this paper, the authors presented the research on laser formed construction bars made of C20 steel on the example of the T-shape. The CO2 TRUMPF TruFlow 6000 laser was used in the research.
Kurp P., Mucha Z., Tofil S., Mulczyk K.
doaj   +1 more source

Enhancement of laser heating process by laser surface modification on Titanium alloy

Journal of Mechanical Engineering and Sciences, 2021
Titanium alloys are widely utilized in laser heating applications. However, it has poor optical properties due to low laser energy absorption. Nevertheless, a higher energy absorption can be realized by modifying the surface profile through increasing ...
A. Q. Zaifuddin, F. Zulhilmi, M.H. Aiman, M.M. Quazi, M. Ishak   +4 more
doaj   +1 more source

Processing and Microstructure of WC-CO Cermets by Laser Engineering Net Shaping [PDF]

, 2008
Submicron-sized tungsten carbide-cobalt (WC-Co) powder and nanostructured WC-Co powder were applied to make thick wall samples by the Laser Engineered Net Shaping (LENS®) process.
Lavernia, E. J., Schoenung, J. M., Smugeresky, J. E., Xiong, Y.   +3 more
core   +1 more source

Enhancing the Long‐Term Robustness of Dropwise Condensation on Nanostructured Superhydrophobic Surfaces by Introducing 3D Conical Microtextures Prepared by Femtosecond Laser

Advanced Materials Interfaces, 2020
Achieving sustainable dropwise condensation is still a challenge for the industrial applications of bio‐inspired superhydrophobic surfaces in the field of phase‐change heat transfer.
Jiangyou Long, Peiyang Zhou, Yajun Huang, Xiaozhu Xie   +3 more
doaj   +1 more source

HCF Failure Modes and Mechanisms of Dissimilar Welds of Martensite/Austenite Metals at Elevated Temperature [PDF]

MATEC Web of Conferences, 2019
In this paper, the high cycle fatigue (HCF) behavior and failure mechanism of welded joint for martensite/austenite dissimilar metals were systematically investigated at elevated temperature.
Shao Chendong, Cui Haichao, Lu Fenggui, Li Zhuguo   +3 more
doaj   +1 more source

Pulsed excimer laser processing [PDF]

, 1985
The status of pulsed excimer laser processing of PV cells is presented. The cost effective feasibility of fabricating high efficiency solar cells on Czochralski wafers using a pulsed excimer laser for junction formation, surface passivation, and front ...
Wong, D.
core   +1 more source

Nanoscale Processing by Adaptive Laser Pulses

, 2002
We theoretically demonstrate that atomically-precise ``nanoscale processing" can be reproducibly performed by adaptive laser pulses. We present the new approach on the controlled welding of crossed carbon nanotubes, giving various metastable junctions of
A.M. Weiner, A.M. Weiner, A.P. Peirce, B.K.A. Ngoi, D. Meshulach, D.B. Geohegan, D.J. Tannor, E.J. Mele, F. Banhart, F.-R. Tsai, G.G. Samsonidze, H.O. Jeschke, J. Hone, J. Hone, J. Sloan, J.A. Roth, L.C. Qin, M. Irie, M. Terrones, M. Terrones, N.G. Chopra, P. Král, P. Nikolaev, P.M. Ajayan, Petr Král, R. Tenne, S. Berber, S. Iijima, T. Brixner, T. Hertel, Y. Zhao, Y.-G. Yoon, Y.H. Lee   +32 more
core   +1 more source