Physical Properties of Grain-Boundary Materials: Comparison of EAM and Central-Force Potentials

1989 ◽  
pp. 245-263 ◽  
Author(s):  
D. Wolf ◽  
J. Lutsko ◽  
M. Kluge
Keyword(s):  
Grain Boundary ◽  
Physical Properties ◽  
Central Force

SUMITOMO 347AP

Alloy Digest ◽  
1993 ◽  
Vol 42 (8) ◽  
Keyword(s):  
Grain Boundary ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
Low Carbon ◽  
Niobium Content

Abstract SUMITOMO 347AP is similar to what could be called Type 347LN and was developed to prevent polythionic acid cracking in chromium depleted grain boundary areas. The columbium (niobium) content is maintained at a ratio of greater than 15 times the carbon in addition to maintaining very low carbon levels. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on forming, heat treating, and joining. Filing Code: SS-548. Producer or source: Sumitomo Metal USA Corporation.

Effect of Metal Oxide Nanoparticles Addition on Physical Properties of Hydroxyapatite

2012 ◽  
Vol 506 ◽  
pp. 234-237
Author(s):  
N. Lertcumfu ◽  
P. Jarupoom ◽  
Kamonpan Pengpat ◽  
T. Tunkasiri ◽  
Gobwute Rujijanagul
Keyword(s):  
Grain Boundary ◽  
Metal Oxide ◽  
Physical Properties ◽  
Energy Dispersive Spectroscopy ◽  
Metal Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ni Substitution ◽  
Tricalcium Phosphates

In the present study the effects of metal oxide nanoparticles addition on the microstructure, physical properties of the HA ceramics were investigated. Many techniques were used for the analysis. X-ray diffraction analysis revealed a co-exist phases between hydroxyapatite and tricalcium phosphate in the sintered samples. Addition of NiO resulted an increase in the lattice parameters of the tricalcium phosphates due to the bigger radii atom (Ni) substitution for the small radii atom (Ca). Energy dispersive spectroscopy suggested that most of NiO particles located at grain boundary, resulting in an improvement of hardness of the samples

Brazilian Raw Materials Doped TiO2 Based Electroceramics

2006 ◽  
Vol 530-531 ◽  
pp. 444-448
Author(s):  
A.P.P. Fontanesi ◽  
J.M. Cavenaghi ◽  
Vania Caldas de Sousa
Keyword(s):  
Grain Boundary ◽  
Electric Field ◽  
Physical Properties ◽  
Raw Materials ◽  
Tantalum Oxide ◽  
Nonlinear Coefficient ◽  
Raw Material ◽  
Doped Tio2 ◽  
Preliminary Results ◽  
Breakdown Electric Field

Dopants such as Ta2O5 play a major role in the formation of barriers at the grain boundary in TiO2 varistors, increasing their nonlinear coefficient and decreasing their breakdown electric field. This paper discusses the microstructural and physical properties of Ta- and Cr-doped TiO2 systems in which imported tantalum oxide was replaced with an equivalent Brazilian raw material. Preliminary results confirm that this national oxide can be utilized to obtain electroceramics such as varistors.

Grain boundary modification of TiC ultrananocrystalline thin films: Improvement in tribo-physical properties

2018 ◽  
Vol 217 ◽  
pp. 468-476
Author(s):  
Gomathi Natarajan ◽  
Niranjan Kumar ◽  
Ramanathaswamy Pandian ◽  
S. Amirthapandian
Keyword(s):  
Thin Films ◽  
Grain Boundary ◽  
Physical Properties ◽  
Boundary Modification

CM 186 LC ALLOY

Alloy Digest ◽  
1994 ◽  
Vol 43 (4) ◽  
Keyword(s):  
Grain Boundary ◽  
Physical Properties ◽  
Heat Treating ◽  
Thin Wall ◽  
Directionally Solidified ◽  
Average Resistance ◽  
Turbine Airfoils

Abstract CM 186 LC is a rhenium-containing, directionally solidified (DS) superalloy. It has excellent DS castability and above average resistance to grain boundary cracking in complex cored, thin wall turbine airfoils. This datasheet provides information on composition and physical properties as well as creep. It also includes information on casting and heat treating. Filing Code: Ni-450. Producer or source: Cannon-Muskegon Corporation.

The Comparative Study of Y123 and Y13-20-33 Superconductors Synthesized by Melt Process

2016 ◽  
Vol 675-676 ◽  
pp. 303-306
Author(s):  
Sutee Chantrapakajee ◽  
Piyamas Chainok ◽  
Supphadate Sujinnapram ◽  
Thanarat Khuntak ◽  
Tunyanop Nilkamjon ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Heat Treatment ◽  
Critical Temperature ◽  
Grain Boundary ◽  
Comparative Study ◽  
Physical Properties ◽  
Flat Surface ◽  
Orthorhombic Crystal ◽  
Orthorhombic Crystal Structure ◽  
The Comparative Study

Abstract. In this research, we synthesized and investigate the physical properties of YBaCuO superconductor; Y123 and Y13-20-30. The melt process was used for heat treatment of our samples. We found that the critical temperature onset of Y13-20-33 and Y123 were at 90 K and 94 K, respectively. The morphology of Y123 superconductor has flat surface and more clear grain boundary than Y13-20-33 superconductor. However, more melted of grain boundary were found on Y13-20-33. Both samples were the orthorhombic crystal structure that c/a ratio of Y13-20-33 was higher than of Y123 superconductor.

On the nature of grain boundary defects in high quality CVD diamond films and their influence on physical properties

1999 ◽  
Vol 8 (6) ◽  
pp. 996-1005 ◽  
Author(s):  
J.W. Steeds ◽  
A. Gilmore ◽  
K.M. Bussmann ◽  
J.E. Butler ◽  
P. Koidl
Keyword(s):  
Grain Boundary ◽  
Physical Properties ◽  
Diamond Films ◽  
Cvd Diamond ◽  
High Quality

The Photometric Properties of the Ap Stars

1976 ◽  
Vol 32 ◽  
pp. 365-377 ◽  
Author(s):  
B. Hauck
Keyword(s):  
Physical Properties ◽  
Ap Stars

The Ap stars are numerous - the photometric systems tool It would be very tedious to review in detail all that which is in the literature concerning the photometry of the Ap stars. In my opinion it is necessary to examine the problem of the photometric properties of the Ap stars by considering first of all the possibility of deriving some physical properties for the Ap stars, or of detecting new ones. My talk today is prepared in this spirit. The classification by means of photoelectric photometric systems is at the present time very well established for many systems, such as UBV, uvbyβ, Vilnius, Geneva and DDO systems. Details and methods of classification can be found in Golay (1974) or in the proceedings of the Albany Colloquium edited by Philip and Hayes (1975).

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