Results 21 to 30 of about 2,405 (203)

Advancement of Powder Spheroidization Process Using a Small Power DC-RF Hybrid Plasma Flow System by Sinusoidal Gas Injection

open access: yesJournal of Fluid Science and Technology, 2011
The effect of sinusoidal central gas injection on the in-flight alumina spheroidization process was experimentally clarified by using DC-RF hybrid plasma flow system under constant low input power.
Juyong JANG   +3 more
doaj   +1 more source

Prospects for vibromechanical spheroidization of metal powders [PDF]

open access: yes, 2021
The paper contains a review of the main technologies used for producing metal powders for 3D printing. The prospects are shown for the development of an energy-saving technology for mechanical spheroidization of metal powders using metal processing waste
Samukov, Alexander   +3 more
core   +1 more source

Investigation on spheroidization of refractory tungsten powders by laminar DC plasma torch

open access: yesMaterials Research Express, 2022
The spherical tungsten powders were prepared by a low-power DC laminar plasma torch. At a discharge current of 50 A, the tungsten powder fed downstream cannot be spheroidized by using Ar discharge, while a small number of spherical particles can be ...
Y Ma, W Ke, K Yang, X D Zhu
doaj   +1 more source

Investigation of The Effect of Semi-Solid Temperatures and Holding Times at Isothermal Range On Microstructure of AZ31 Mg Alloy

open access: yesGazi Üniversitesi Fen Bilimleri Dergisi, 2023
Mg alloys have poor formability due to their hexagonal tightly packed (HCP) crystal structure, low active shear system at room temperature, and anisotropic behavior in polycrystalline structure.
Bahadır AKGÜN, Kadir KOCATEPE
doaj   +1 more source

A New Heat Treatment Cycle Design for High Wear Resistant in PM Steels

open access: yesInternational Journal of Automotive Science and Technology, 2020
In this study, 1.5% by weight of natural graphite powders were added to Atomet 1001 pure iron powders and unalloyed high carbon powder metallurgy steel specimens were obtained.
Onur Altuntaş, Ahmet Güral
doaj   +1 more source

Research on Spheroidization of Tungsten Powder from Three Different Raw Materials

open access: yes, 2022
In this work, three kinds of tungsten powders with different particle sizes were spheroidized by radio-frequency (RF) inductively coupled plasma spheroidization. The spheroidization behavior of these tungsten powders was investigated and compared.
Zhenhua Hao   +11 more
core   +1 more source

Intercellular Communication in Spheroids [PDF]

open access: yes, 1984
This chapter has shown that the response of spheroid cells to gap junctional communication may lead to certain metabolic and cell physiological changes. It has also become apparent that the functions of the gap junctions are very complex. They may, for example, be related to the fundamental effects of cAMP and/or Ca 2+.
Dertinger, Hermann, Hülser, Dieter F.
openaire   +4 more sources

Synthesis of Multiscale Ultrafine Copper Powder via Radio Frequency Induction Coupled Plasma Treatment

open access: yesMetals, 2022
Nano-sized spherical copper powder has important applications in the fields of microelectronic devices, highly efficient catalysts and lubricant additives.
Haibo Wu   +4 more
doaj   +1 more source

Influence of Vanadium Microalloying on Deformation-Induced Pearlite Transformation of Eutectoid Steel

open access: yesMetals, 2019
In order to investigate the influence of vanadium microalloying on deformation-induced pearlite transformation (DIPT) of eutectoid steel, thermomechanical simulation tests were carried out in this study.
Zhen Cai   +4 more
doaj   +1 more source

Research Progress on Preparation and Modification of Sodium Alginate-based Gel Spheres and Its Application in Food Packaging

open access: yesShipin gongye ke-ji, 2023
Sodium alginate is a natural polysaccharide material with good gel properties. Presently, the sodium alginate-based gel beads prepared by gel properties are mainly used as microcapsules in the encapsulation of probiotics, the immobilization of cells and ...
Xiaoye YANG, Shufeng MA, Liqiang WANG
doaj   +1 more source

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