Minor yttrium nitrate addition effect on FeSiCr alloy powder core electromagnetic properties

2017 ◽  
Vol 444 ◽  
pp. 1-6 ◽  
Author(s):  
Hsing-I Hsiang ◽  
Liang-Fang Fan ◽  
Kuan-Ting Ho
Keyword(s):  
Alloy Powder ◽  
Electromagnetic Properties ◽  
Yttrium Nitrate ◽  
Nitrate Addition

The effect of yttrium nitrate addition on the densification behaviour of Y2O3 ceramics during the cold sintering process

2020 ◽  
Vol 40 (8) ◽  
pp. 3208-3214
Author(s):  
Doyun Lee ◽  
Jung-A Lee ◽  
Young-Woo Heo ◽  
Joon-Hyung Lee ◽  
Jae-Il Jung ◽  
...  
Keyword(s):  
Yttrium Nitrate ◽  
Sintering Process ◽  
Densification Behaviour ◽  
Nitrate Addition

Shock consolidation of Ni-Ti alloy powder

1986 ◽  
Vol 44 ◽  
pp. 430-431
Author(s):  
Naresh N. Thadhani ◽  
Thad Vreeland ◽  
Thomas J. Ahrens
Keyword(s):  
Alloy Powder ◽  
Amorphous Material ◽  
Ti Alloy ◽  
Two Phase ◽  
Near Surface ◽  
Optical Micrograph ◽  
Shock Compaction ◽  
Powder Particles ◽  
Ti Powder ◽  
Rapidly Solidified

A spherically-shaped, microcrystalline Ni-Ti alloy powder having fairly nonhomogeneous particle size distribution and chemical composition was consolidated with shock input energy of 316 kJ/kg. In the process of consolidation, shock energy is preferentially input at particle surfaces, resulting in melting of near-surface material and interparticle welding. The Ni-Ti powder particles were 2-60 μm in diameter (Fig. 1). About 30-40% of the powder particles were Ni-65wt% and balance were Ni-45wt%Ti (estimated by EMPA).Upon shock compaction, the two phase Ni-Ti powder particles were bonded together by the interparticle melt which rapidly solidified, usually to amorphous material. Fig. 2 is an optical micrograph (in plane of shock) of the consolidated Ni-Ti alloy powder, showing the particles with different etching contrast.

Facet Topography and Dislocation Structure as a Possible Source for Electrical Heterogeneity in [001] TILT Bicrystals of YBa2Cu3O7-δ

1996 ◽  
Vol 54 ◽  
pp. 338-339
Author(s):  
I-Fei Tsu ◽  
D.L. Kaiser ◽  
S.E. Babcock
Keyword(s):  
Grain Boundary ◽  
Critical Current Density ◽  
Critical Current ◽  
Current Density ◽  
Electromagnetic Properties ◽  
Length Scale ◽  
Density Values ◽  
Current Densities ◽  
Applied Fields ◽  
A Current

A current theme in the study of the critical current density behavior of YBa2Cu3O7-δ (YBCO) grain boundaries is that their electromagnetic properties are heterogeneous on various length scales ranging from 10s of microns to ˜ 1 Å. Recently, combined electromagnetic and TEM studies on four flux-grown bicrystals have demonstrated a direct correlation between the length scale of the boundaries’ saw-tooth facet configurations and the apparent length scale of the electrical heterogeneity. In that work, enhanced critical current densities are observed at applied fields where the facet period is commensurate with the spacing of the Abrikosov flux vortices which must be pinned if higher critical current density values are recorded. To understand the microstructural origin of the flux pinning, the grain boundary topography and grain boundary dislocation (GBD) network structure of [001] tilt YBCO bicrystals were studied by TEM and HRTEM.

Behavior of Additive Elements for Nd-Fe-B Alloy Powder Produced by Reduction-diffusion Method with Metallic Ca.

1999 ◽  
Vol 115 (8) ◽  
pp. 625-630
Author(s):  
Kaname TAKEYA ◽  
Yoshihiro TSUBOI ◽  
Kenji OHMORI ◽  
Yasuhiro OKAJIMA
Keyword(s):  
Alloy Powder ◽  
Diffusion Method

Laser Surfacing with Co30Cr12.5W Cobalt-Alloy Powder

2020 ◽  
Vol 40 (10) ◽  
pp. 890-892
Author(s):  
E. A. Morozov ◽  
K. R. Muratov ◽  
A. V. Shafranov ◽  
A. A. Drozdov ◽  
L. D. Sirotenko ◽  
...  
Keyword(s):  
Alloy Powder ◽  
Cobalt Alloy ◽  
Laser Surfacing

TRIBALOY 400

Alloy Digest ◽  
1975 ◽  
Vol 24 (7) ◽  
Keyword(s):  
Alloy Powder ◽  
Base Alloy ◽  
Intermetallic Phase ◽  
Heat Treating ◽  
Corrosion And Wear ◽  
Corrosive Media ◽  
Alloy Matrix ◽  
Cobalt Base Alloy ◽  
Plasma Sprayed ◽  
Cobalt Base

Abstract TRIBALOY 400 consists of a hard, intermetallic phase in a softer, cobalt-base alloy matrix. It can be cast or hardfaced. As alloy powder it can be plasma sprayed or blended with other powders for P/M (Powder/Metallurgy) processing. Uses include anti-wear surfaces and bearings or seals operating in corrosive media. This datasheet provides information on composition, physical properties, hardness, tensile properties, and compressive strength as well as fracture toughness. It also includes information on corrosion and wear resistance as well as forming, heat treating, machining, and joining. Filing Code: Co-72. Producer or source: Tribaloy Products.

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