Synthesis of niobium boride powder by solid state reaction between niobium and amorphous boron

1989 ◽  
Vol 155 (2) ◽  
pp. 207-214 ◽  
Author(s):  
Tsuneaki Matsudaira ◽  
Hideaki Itoh ◽  
Shigeharu Naka ◽  
Hiroshi Hamamoto
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Amorphous Boron ◽  
Boride Powder ◽  
Niobium Boride

scholarly journals Preparation of Niobium Borides by Solid-state Reaction Between Niobium (V) Oxide and Amorphous Boron Powders

2007 ◽  
Vol 54 (10) ◽  
pp. 682-685
Author(s):  
Kiyokata Iizumi ◽  
Yutaka Sawada ◽  
Shigeru Okada ◽  
Toetsu Shishido ◽  
Kunio Kudou ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Amorphous Boron

scholarly journals Preparation of Chromium Borides by Solid State Reaction Between Chromium and Amorphous Boron.

1992 ◽  
pp. 1320-1325 ◽  
Author(s):  
Kiyokata IIZUMI ◽  
Nobukazu YOSHIKAWA ◽  
Satoko KOUNO ◽  
Shigeru OKADA ◽  
Katsuya KUDAKA ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Amorphous Boron

scholarly journals Synthesis of Tantalum Boride Powder by Solid State Reaction and Its Sintering

1990 ◽  
Vol 98 (1135) ◽  
pp. 264-268 ◽  
Author(s):  
Hideaki ITOH ◽  
Yusuke SATOH ◽  
Satoshi KODAMA ◽  
Shigeharu NAKA
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Boride Powder

Formation process of tungsten borides by solid state reaction between tungsten and amorphous boron

1987 ◽  
Vol 22 (8) ◽  
pp. 2811-2815 ◽  
Author(s):  
H. Itoh ◽  
T. Matsudaira ◽  
S. Naka ◽  
H. Hamamoto ◽  
M. Obayashi
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Formation Process ◽  
Amorphous Boron ◽  
Tungsten Borides

Effect of pressure on the structure of Fe–N alloys formed by solid-state reaction

2001 ◽  
Vol 16 (9) ◽  
pp. 2583-2590 ◽  
Author(s):  
B. Yao ◽  
L. Liu ◽  
S. E. Liu ◽  
X. Hu ◽  
W. H. Su
Keyword(s):  
High Pressure ◽  
Solid State ◽  
Boron Nitride ◽  
Solid State Reaction ◽  
Atmospheric Pressure ◽  
Amorphous Boron ◽  
Orthorhombic Structure ◽  
Mechanism Of Formation ◽  
Lattice Constants ◽  
Cubic Structure

Fe–N alloys with crystalline structures different from those obtained at atmospheric pressure were produced by solid-state reaction between Fe and amorphous boron nitride under high pressure. Two new paramagnetic Fe–N phases were obtained at temperatures above 800 K under pressures between 2.0 and 4.0 GPa. One is of cubic structure with lattice constant of 6.114 Å, and another is of orthorhombic structure with lattice constants of a = 4 8.443, b = 4 4.749, and c 4 3.993 Å. ε–Fe3Nx with N contents of 18.1 to 21.4 at.%, which could not be obtained at atmospheric pressure, was produced at pressures of 3.0 to 4.0 GPa and temperatures of 690 to 800 K. The mechanism of formation of ε–Fe3Nx under high pressure is discussed.

The wustite-spinel interface

1987 ◽  
Vol 45 ◽  
pp. 268-269
Author(s):  
S.R. Summerfelt ◽  
C.B. Carter
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Strain Energy ◽  
Matrix Material ◽  
Lattice Misfit ◽  
Solid State Reactions ◽  
Oxygen Sublattice ◽  
Large Particles ◽  
Small Lattice ◽  
Coherent Interfaces

The wustite-spinel interface can be viewed as a model interface because the wustite and spinel can share a common f.c.c. oxygen sublattice such that only the cations distribution changes on crossing the interface. In this study, the interface has been formed by a solid state reaction involving either external or internal oxidation. In systems with very small lattice misfit, very large particles (>lμm) with coherent interfaces have been observed. Previously, the wustite-spinel interface had been observed to facet on {111} planes for MgFe2C4 and along {100} planes for MgAl2C4 and MgCr2O4, the spinel then grows preferentially in the <001> direction. Reasons for these experimental observations have been discussed by Henriksen and Kingery by considering the strain energy. The point-defect chemistry of such solid state reactions has been examined by Schmalzried. Although MgO has been the principal matrix material examined, others such as NiO have also been studied.

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