Results 11 to 20 of about 80,219 (304)

High porosity metallic glass foam: A powder metallurgy route [PDF]

, 2007
A powder metallurgy route to the fabrication of metallic glass foam is introduced. The method involves consolidating metallic glass powder blended with blowing agent particulates to produce expandable precursors, capable of yielding foams with porosities
Chris Veazey, Jay C. Hanan, Joseph P. Schramm, Kawamura Y., Marios D. Demetriou, Nicholas B. Phelps, Schroers J., William L. Johnson   +7 more
core   +2 more sources

A dual-transmission-bands rasorber with improved absorption and oblique incidence performance

Scientific Reports, 2022
In this paper, a high-absorption and dual-transmission-bands rasorber (HADTR) was proposed. Different from the reported designs, a foam layer and a FR4 layer are added as top layers in HADTR to improve its absorption and oblique incidence performance ...
Zheyipei Ma, Chao Jiang, Jiale Li, Xiaozhong Huang   +3 more
doaj   +1 more source

Constant amplitude and post-overload fatigue crack growth behavior in PM aluminum alloy AA 8009 [PDF]

, 1992
A recently developed, rapidly solidified, powder metallurgy, dispersion strengthened aluminum alloy, AA 8009, was fatigue tested at room temperature in lab air.
Blankenship C. P., Dawicke D. S., Dutta V. B., Elber W., Gilman P. S., Hawk J. A., McEvily A. J., Piascik R. S., Rao K. T. V., Raybould D., Ritchie R. O., Vecchio R. S., Venkateswara Rao K. T.   +12 more
core   +2 more sources

Ultrahigh energy density in dielectric nanocomposites by modulating nanofiller orientation and polymer crystallization behavior

Advanced Powder Materials
High-energy density dielectrics for electrostatic capacitors are in urgent demand for advanced electronics and electrical power systems. Poly(vinylidene fluoride) (PVDF) based nanocomposites have attracted remarkable attention by intrinsic high ...
Ru Guo, Hang Luo, Di Zhai, Zhida Xiao, Haoran Xie, Yuan Liu, Fan Wang, Xun Jiang, Dou Zhang   +8 more
doaj   +1 more source

MODIFICATION OF THE ENERGY-SATURATED HETEROGENEOUS COMPOSITE MATERIAL BY CYCLIC NITRAMINES

Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2018
Several methods have been described for increasing the main characteristics (density, heat of combustion, combustion temperature, gas formation index) and operating properties (combustion speed and temperature, total and specific impulse, properties of ...
A. Ph. Ilyushchanka, Ya. Ya. Piatsiushyk, A. K. Kryvanos   +2 more
doaj   +1 more source

Introduction of nanoscale additives in the process of modification of energy-saturated heterogeneous composite material

Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2019
The article describes a possible way of introducing nanoscale powders into energy-saturated heterogeneous composite materials (ECM). By the example of polydispersed nanoscale carbon, the main well-known methods for introducing nanoscale components into ...
A. Ph. Ilyushchanka, Ya. Ya. Piatsiushyk, A. K. Kryvanos   +2 more
doaj   +1 more source

Energy and material efficiency of steel powder metallurgy [PDF]

, 2018
Concern about global warming motivates the reduction of greenhouse gas emissions from manufacturing but as yet the environmental impact of the whole powder metallurgy production chain has not been assessed.
Allwood, JM, Azevedo, JMC, CabreraSerrenho, A   +2 more
core   +1 more source

Fabrication of a Porous TiNi₃ Intermetallic Compound to Enhance Anti-Corrosion Performance in 1 M KOH

Metals
Porous intermetallic compounds have the properties of porous materials as well as a combination of covalent and metallic bonds, and they exhibit high porosity, structural stability, and corrosion resistance.
Zhenli He, Yue Qiu, Yuehui He, Qian Zhao, Zhonghe Wang, Yao Jiang   +5 more
doaj   +1 more source

Effects of process parameters on microstructure and cracking susceptibility of a single crystal superalloy fabricated by directed energy deposition

Materials & Design, 2021
As an advanced material forming method, additive manufacturing (AM) has been rapidly developed in many industry fields. Due to the non-weldability of nickel-based single crystal (SX) superalloys and complex solidification and stress conditions of AM ...
Zhipeng Zhou, Qian Lei, Zhou Yan, Zi Wang, Yijing Shang, Yunping Li, Huan Qi, Liang Jiang, Yong Liu, Lan Huang   +9 more
doaj   +1 more source

Microstructure and mechanical properties of sintered and heat-treated HfNbTaTiZr high entropy alloy [PDF]

, 2019
High entropy alloys (HEAs) have attracted researchers' interest in recent years. The aim of this work was to prepare the HfNbTaTiZr high entropy alloy via the powder metallurgy process and characterize its properties.
Kocich, Radim, Kunčická, Lenka, Lukáč, František, Málek, Jaroslav, Zýka, Jiří, Čížek, Jakub   +5 more
core   +1 more source