Particle-plasma interactions during low pressure plasma deposition

1984 ◽  
Vol 118 (4) ◽  
pp. 395-407 ◽  
Author(s):  
D. Apelian ◽  
D. Wei ◽  
M. Paliwal
Keyword(s):  
Plasma Deposition ◽  
Low Pressure ◽  
Plasma Interactions ◽  
Pressure Plasma ◽  
Low Pressure Plasma

Rapid Solidification by Plasma Deposition

1983 ◽  
Vol 30 ◽  
Author(s):  
D. Apelian
Keyword(s):  
Rapid Solidification ◽  
Plasma Deposition ◽  
Low Pressure ◽  
Structural Refinement ◽  
Pressure Plasma ◽  
Low Pressure Plasma ◽  
Solidification Processes

ABSTRACTRapid solidification processes (RSP) have been reviewed. The structural refinement one may obtain via RSP and the consolidation methods which need to be utilized have also been reviewed. The merits of low pressure plasma deposition (LPPD) or rapid solidification by plasma deposition (RSPD) as a means of combining both the atomization and consolidation steps of RSP is highlighted. The applications and challenges of RSPD are discussed.

Low-pressure plasma deposition of tungsten

1994 ◽  
Vol 3 (2) ◽  
pp. 135-141 ◽  
Author(s):  
W. Cai ◽  
H. Liu ◽  
A. Sickinger ◽  
E. Muehlberger ◽  
D. Bailey ◽  
...  
Keyword(s):  
Plasma Deposition ◽  
Low Pressure ◽  
Pressure Plasma ◽  
Low Pressure Plasma

Toughness of dense MoSi2 and composites produced by low pressure plasma deposition

1992 ◽  
Vol 26 (2) ◽  
pp. 207-212 ◽  
Author(s):  
Richard G. Castro ◽  
Ronald W. Smith ◽  
Anthony D. Rollett ◽  
Paul W. Stanek
Keyword(s):  
Plasma Deposition ◽  
Low Pressure ◽  
Pressure Plasma ◽  
Low Pressure Plasma

Reactive synthesis and characterization of using low-pressure plasma deposition and 100% methane

1995 ◽  
Vol 32 (5) ◽  
pp. 689-693 ◽  
Author(s):  
D.E. Lawrynowicz ◽  
J. Wolfenstine ◽  
E.J. Lavernia ◽  
S.R. Nutt ◽  
D.E. Bailey ◽  
...  
Keyword(s):  
Plasma Deposition ◽  
Low Pressure ◽  
Synthesis And Characterization ◽  
Reactive Synthesis ◽  
Pressure Plasma ◽  
Low Pressure Plasma

Synthesis and Properties of MoSi2/SiC Processed by Low Pressure Plasma Co-Injection and Deposition

1993 ◽  
Vol 322 ◽  
Author(s):  
D.E. Lawrynowicz ◽  
J. Wolfenstine ◽  
S. Nutt ◽  
E.J. Lavernia ◽  
D.E. Bailey ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Volume Fraction ◽  
Plasma Deposition ◽  
Low Pressure ◽  
High Concentration ◽  
Pressure Plasma ◽  
Alternative Processing ◽  
Transmission Electron ◽  
Low Pressure Plasma ◽  
Sic Composites

AbstractLow-pressure plasma deposition (LPPD) and co-injection has been used to fabricate a MoSi2 composite reinforced with 15 µm SiC particles. The microstructure and creep behavior of the LPPD processed composite are reported and discussed. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) showed the structure of the composite to be lamellar and energy dispersive X-ray analysis (EDAX) identified the phases present in the material as: MoSi2, Mo5Si3, SiO2, and SiC. Density characterization revealed a porosity of less than 1.0 vol. %, indicating a nearly fully dense material. A high concentration of SiO2 (∼8.0 vol. %) present in the MoSi2/SiC composite may be attributed to possible contamination of the starting powders before or during LPPD. Sublimation of SiC during co-injection led to a low volume fraction (< 2.0 vol. %) of reinforcement in the composite. The creep rate of the LPPD MoSi2/SiC was higher relative to that of MoSi2/SiC composites fabricated by powder metallurgy (PM) techniques. On the basis of the results of this study it has become evident that alternative processing methods such as LPPD insitu processing may be better suited for the fabrication of elevated volume fraction MoSi2/SiC composites.

Aerosol-assisted low pressure plasma deposition of antimicrobial hybrid organic-inorganic Cu-composite thin films for food packaging applications

2017 ◽  
Vol 41 ◽  
pp. 130-134 ◽  
Author(s):  
Nicoletta De Vietro ◽  
Amalia Conte ◽  
Anna Lucia Incoronato ◽  
Matteo Alessandro Del Nobile ◽  
Francesco Fracassi
Keyword(s):  
Thin Films ◽  
Food Packaging ◽  
Plasma Deposition ◽  
Low Pressure ◽  
Composite Thin Films ◽  
Pressure Plasma ◽  
Low Pressure Plasma

An Experimental Study of Powder Melting During Low Pressure Plasma Deposition

1983 ◽  
Vol 30 ◽  
Author(s):  
M. Paliwal ◽  
D. Apelian
Keyword(s):  
Experimental Study ◽  
High Performance ◽  
Plasma Deposition ◽  
Plasma Jet ◽  
Low Pressure ◽  
Process Variables ◽  
Plasma Gun ◽  
Pressure Plasma ◽  
Low Pressure Plasma ◽  
Powder Particles

ABSTRACTLow pressure plasma deposition (LPPD), a recent advancement in plasma spray metallizing, is currently being developed for high performance materials applications. An experimental study of particle melting within the plasma jet was pursued to identify the effect of the process variables and the material properties on the resultant deposit. In tandem the experimental results have been utilized in the development and verification of a mathematical model for the melting of powder particles during the process.Two binary iron based model alloys - Fe-20 wt% Mn and Fe-20 wt% Cu - were plasma sprayed using Ma 2.4 and Ma 3 guns. Two different methods were used to evaluate the degree of particle melting within the plasma jet. The first method intercepts the particle path in the plasma jet with a glass slide, whereas in the second method the powder particles are collected in free flight using a powder collector (resolidification of powder particles occurs before they impact the collector walls). The droplets which impacted on glass slides and the collected (using the powder collector) powder particles were studied for mode and degree of powder particle melting using scanning electron microscopy. “Sweet spot” deposits (with no relative motion between the plasma gun and the substrate) were also made for the two model alloys in different size ranges using the Ma 2.4 and Ma 3 guns. The resulting deposits were metallographically evaluated. Mode and degree of particle melting injected under different process variables as well as the resultant deposit structures are presented.

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