Hybrid Plasma Deposition Methods for Synthesis of Nanostructured Materials

2006 ◽  
pp. 103-111 ◽  
Author(s):  
A. A. Voevodin ◽  
J. S. Zabinski
Keyword(s):  
Nanostructured Materials ◽  
Plasma Deposition ◽  
Hybrid Plasma

Hybrid Plasma Deposition Methods for Synthesis of Nanostructured Materials

ChemInform ◽  
2005 ◽  
Vol 36 (40) ◽  
Author(s):  
A. A. Voevodin ◽  
J. S. Zabinski
Keyword(s):  
Nanostructured Materials ◽  
Plasma Deposition ◽  
Hybrid Plasma

Directly Manufacturing Table Tennis Mould by Hybrid Plasma Deposition & Milling

2014 ◽  
Vol 887-888 ◽  
pp. 1219-1222
Author(s):  
Xin Hong Xiong ◽  
Dun Miao Quan ◽  
Jia Lin Chen
Keyword(s):  
Plasma Deposition ◽  
High Energy ◽  
High Energy Density ◽  
Table Tennis ◽  
Additive Technology ◽  
Metal Parts ◽  
Dimensional Precision ◽  
Step Effect ◽  
Fine Surface ◽  
Hybrid Plasma

A table tennis mould with good performance of dimensional precision and fine surface roughness was directly manufactured by HPDM (Hybrid Plasma Deposition & Milling), which synthesizes plasma deposition as an additive technology, and milling as a subtractive technique during the processing. Compared with the existing RP methods using high energy density beams, the HPDM method solved the key problems of insufficient dimensional precision and surface quality caused by the step effect, and puts forward a new access to directly manufacture the metal parts and mould with short-process and high quality.

A new method of direct metal prototyping: hybrid plasma deposition and milling

2008 ◽  
Vol 14 (1) ◽  
pp. 53-56 ◽  
Author(s):  
Xinhong Xiong ◽  
Zhang Haiou ◽  
Wang Guilan
Keyword(s):  
Plasma Deposition ◽  
New Method ◽  
Hybrid Plasma

Numerical Simulation of Transient Multiphase Field During Hybrid Plasma-Laser Deposition Manufacturing

2008 ◽  
Vol 130 (11) ◽  
Author(s):  
Fanrong Kong ◽  
Haiou Zhang ◽  
Guilan Wang
Keyword(s):  
Mechanical Performance ◽  
Plasma Deposition ◽  
Numerical Study ◽  
Three Dimensional ◽  
Solidification Process ◽  
Laser Deposition ◽  
Heat Transfer Fluid ◽  
Plasma Laser ◽  
Hybrid Plasma ◽  
Plasma Deposition Manufacturing

The hybrid plasma-laser deposition manufacturing (PLDM) process is developed based on the plasma deposition manufacturing (PDM) technology. PLDM belongs to the three-dimensional (3D) welding technology and involves the laser power as an augmented heat resource. Compared to PDM technology, the PLDM process has many advantages such as a higher power density, higher processing precision, refined microstructure, and improved mechanical performance of forming components. There exist complicated physical and metallurgical interaction mechanisms due to the combination of PLDM along with the rapid melting and solidification process. Moreover, the interaction between the laser and plasma arc also directly influences the forming quality and precision of the 3D metal components. Therefore, the proposed work is a preliminary attempt to study the transport phenomena in the PLDM process, in which the heat transfer, fluid flow, and molten powder depositing processes have been investigated in detail. The numerical study is performed by using a pressure-based finite volume difference technique after making appropriate modifications of the algorithm. The associated solid/liquid phase transformation process is involved by using an enthalpy-porosity method, and the level-set approach is introduced to track the evolution of weld surface of the deposition layer with powder feeding. An experimentally based hybrid heat input model is developed to involve the influence of the interaction of laser and arc plasma on the redistributed energy absorption by the material. Corresponding experiments of the PLDM process are performed using the same parameters as in the computations, showing a good qualitative agreement.

Hybrid plasma deposition and milling for an aeroengine double helix integral impeller made of superalloy

2010 ◽  
Vol 26 (4) ◽  
pp. 291-295 ◽  
Author(s):  
Xiong Xinhong ◽  
Zhang Haiou ◽  
Wang Guilan ◽  
Wang Guoxian
Keyword(s):  
Plasma Deposition ◽  
Double Helix ◽  
Hybrid Plasma

Metal direct prototyping by using hybrid plasma deposition and milling

2009 ◽  
Vol 209 (1) ◽  
pp. 124-130 ◽  
Author(s):  
Xinhong Xiong ◽  
Haiou Zhang ◽  
Guilan Wang
Keyword(s):  
Plasma Deposition ◽  
Hybrid Plasma

High-resolution electron microscopy of nanostructured materials

1995 ◽  
Vol 53 ◽  
pp. 172-173
Author(s):  
M. José-Yacamán
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Grain Boundaries ◽  
Nanostructured Materials ◽  
High Resolution Electron Microscopy ◽  
Hrem Image ◽  
Small Particles ◽  
Resolution Electron ◽  
Nanophase Materials

Electron microscopy is a fundamental tool in materials characterization. In the case of nanostructured materials we are looking for features with a size in the nanometer range. Therefore often the conventional TEM techniques are not enough for characterization of nanophases. High Resolution Electron Microscopy (HREM), is a key technique in order to characterize those materials with a resolution of ~ 1.7A. High resolution studies of metallic nanostructured materials has been also reported in the literature. It is concluded that boundaries in nanophase materials are similar in structure to the regular grain boundaries. That work therefore did not confirm the early hipothesis on the field that grain boundaries in nanostructured materials have a special behavior. We will show in this paper that by a combination of HREM image processing, and image calculations, it is possible to prove that small particles and coalesced grains have a significant surface roughness, as well as large internal strain.

Columns: Nanostructured Materials

Polymer News ◽  
2005 ◽  
Vol 30 (7) ◽  
pp. 214-216
Author(s):  
G. Carotenuto
Keyword(s):  
Nanostructured Materials

Column: Nanostructured Materials

Polymer News ◽  
2004 ◽  
Vol 29 (3) ◽  
pp. 77-81
Author(s):  
G. Carotenuto
Keyword(s):  
Nanostructured Materials
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