Vacuum Plasma Spray Forming of Tungsten Base Functionally Gradient Composites

1996 ◽  
Author(s):  
M.R. Kim ◽  
R.W. Smith ◽  
D. Kapoor
Keyword(s):  
Plasma Spray ◽  
Plasma Deposition ◽  
Spray Deposition ◽  
Microstructural Characterization ◽  
Spray Forming ◽  
Vacuum Plasma Spray ◽  
Matrix Composites ◽  
Vacuum Plasma ◽  
Functionally Gradient ◽  
Tungsten Steel

Abstract Functionally gradient composites were spray formed via vacuum plasma spray deposition using tungsten cylindrical substrates. Materials deposited included tungsten-hafnium alloys and M-2 tool steel. Some deposits included micro-laminate layering with hafiiium alloys sprayed within the tungsten-hafnium matrix. Vacuum plasma deposition was shown to provide a viable means of producing functionally gradient composites from tungsten base materials. This was determined both by microstructural characterization of deposit structures and by measuring the compressive properties of the materials. Compression testing of the W-Hf matrix composites demonstrated compression strength of 1,552 MPa (225 ksi). Compression strengths of the tungsten/steel composite averaged 1,068 MPa (155 ksi). Failure of the W-Hf samples occurred via fracture of the tungsten/hafnium matrix whereas the tungsten/steel composites failed within the wrought tungsten core.

Vacuum plasma spray deposition of YSZ–NiO–Ni coatings at different Ar and H2 gas flow rates

Vacuum ◽  
2011 ◽  
Vol 86 (1) ◽  
pp. 34-38 ◽  
Author(s):  
Tomas Grinys ◽  
Sigitas Tamulevičius ◽  
Mindaugas Šilinskas
Keyword(s):  
Plasma Spray ◽  
Gas Flow ◽  
Spray Deposition ◽  
Vacuum Plasma Spray ◽  
Flow Rates ◽  
Vacuum Plasma

Vacuum Plasma Spray Deposition of Spherical Plasma Atomized Ti-6AI-4V

2000 ◽  
Author(s):  
T.A. Brzezinski ◽  
S. Grenier ◽  
M.E. Smagorinski ◽  
G.E. Kim
Keyword(s):  
Mechanical Properties ◽  
Plasma Spray ◽  
High Purity ◽  
Spray Deposition ◽  
Vacuum Plasma Spray ◽  
Particle Size Range ◽  
Vacuum Plasma ◽  
Heat Treated ◽  
Powder Characteristics ◽  
Near Net Shape

Abstract The growing need for new materials and material combinations with superior properties for severe service applications has led to the development of near net-shape forming techniques for certain materials, such as superalloys, refractory metals (Ta, W, and Mo) and highly reactive metals (Ti and its alloys). Vacuum plasma spray (VPS) was used to produce dense Ti-6Al-4V deposits for mechanical properties evaluation. Spherical Ti-6Al-4V powder, produced by Plasma Atomization (PA), a novel patented powder fabrication technique, was used as the starting powder. Plasma atomized Ti-6Al-4V powder characteristics include: high purity, tight particle size range, highly spherical with no attached satellites, and excellent flowability. The resulting as-sprayed Ti-6Al-4V deposits were dense and low in oxygen content. Thermal treatment was conducted after spraying in order to improve the structure and the properties of the spray formed material. The mechanical properties of the material, including tensile strength, elongation and hardness, in both the as-sprayed and the heat treated conditions were compared. The mechanical properties of these preliminary VPS Ti-6Al-4V specimens indicate that the combination of high purity starting powder and controlled environment deposition can be used to produce dense spray formed Ti-6Al-4V structures with properties comparable to those of cast or sintered powder metallurgy parts.

Vacuum Plasma Spray Forming of High Temperature Silicides

1993 ◽  
Vol 322 ◽  
Author(s):  
S. Sampath ◽  
H. Herman
Keyword(s):  
High Temperature ◽  
Plasma Spray ◽  
Molybdenum Disilicide ◽  
Spray Forming ◽  
Vacuum Plasma Spray ◽  
Plasma Spray Forming ◽  
Fine Grained ◽  
Vacuum Plasma ◽  
Near Net Shape ◽  
Relationship Of

AbstractMolybdenum disilicide and its composites have been fabricated by a number of researchers in recent years through vacuum plasma spray (VPS) forming. VPS is capable of producing dense, fine grained deposits of these high temperature intermetallics and is a promising technique for near-net-shape manufacturing. Reviewed here is VPS forming of high temperature silicide intermetallics, principally Mosi2 and its composites. A discussion will be given of the processing-structure-properties relationship of the spray formed silicide.

Study of TLP bonding of Ti-6Al-4V alloy produced by vacuum plasma spray forming and forging

2017 ◽  
Vol 121 ◽  
pp. 355-366 ◽  
Author(s):  
Akbar Davoodi Jamaloei ◽  
Hamid Reza Salimijazi ◽  
Hossein Edris ◽  
Javad Mostaghimi
Keyword(s):  
Plasma Spray ◽  
Spray Forming ◽  
Vacuum Plasma Spray ◽  
Plasma Spray Forming ◽  
Vacuum Plasma ◽  
Tlp Bonding

Microstructure and tensile properties of L12—Type NiCrAl alloy prepared by vacuum plasma spray forming

1995 ◽  
Vol 33 (7) ◽  
pp. 1159-1162 ◽  
Author(s):  
R. Tiwari ◽  
S. Sampath ◽  
B. Gudmundsson ◽  
G. Halada ◽  
C.R. Clayton ◽  
...  
Keyword(s):  
Tensile Properties ◽  
Plasma Spray ◽  
Spray Forming ◽  
Al Alloy ◽  
Vacuum Plasma Spray ◽  
Plasma Spray Forming ◽  
Vacuum Plasma

Vacuum plasma spray forming of refractory metals and ceramics for space furnace containment cartridges—an extended abstract

1995 ◽  
Vol 4 (2) ◽  
pp. 143-144
Author(s):  
T. McKechnie ◽  
P. Krotz ◽  
Y. K. Liaw ◽  
R. M. Poortnan ◽  
F. Zimmerman ◽  
...  
Keyword(s):  
Plasma Spray ◽  
Spray Forming ◽  
Refractory Metals ◽  
Vacuum Plasma Spray ◽  
Plasma Spray Forming ◽  
Vacuum Plasma

Vacuum Plasma Spray Deposition of Titanium Particle/Glass-Ceramic Matrix Biocomposites

1996 ◽  
Vol 79 (6) ◽  
pp. 1515-1520 ◽  
Author(s):  
Monica Ferraris ◽  
Paolo Rabajoli ◽  
Luigi Paracchini ◽  
Francesco Brossa
Keyword(s):  
Plasma Spray ◽  
Glass Ceramic ◽  
Spray Deposition ◽  
Ceramic Matrix ◽  
Vacuum Plasma Spray ◽  
Titanium Particle ◽  
Vacuum Plasma
Sign in / Sign up

Export Citation Format

Share Document