The preparation of analysis samples of hard materials with a boron carbide mortar

The Analyst ◽  
1967 ◽  
Vol 92 (1093) ◽  
pp. 271 ◽  
Author(s):  
J. F. Boulton ◽  
R. P. Eardley
Keyword(s):  
Boron Carbide ◽  
Hard Materials

scholarly journals On Modeling of Synthesis Process of Boron Carbide Based Nanocomposites

2021 ◽  
Vol 6 (1) ◽  
pp. 3
Author(s):  
Levan Chkhartishvili ◽  
Levan Antashvili ◽  
Lasha Dalakishvili ◽  
Roin Chedia ◽  
Otar Tsagareishvili ◽  
...  
Keyword(s):  
Boron Carbide ◽  
Synthesis Process ◽  
Wide Field ◽  
Optimal Route ◽  
First Order ◽  
Hard Materials ◽  
Reaction Constants ◽  
Boron Carbide B4c ◽  
Modern Technologies ◽  
Additional Phase

Nanocomposites based on boron carbide B4C are hard materials with wide field of applications in modern technologies. A system of first-order ordinary differential equations that simulates the process of chemical synthesis of nanopowders of B4C–TiB2 compositions containing titanium diboride (TiB2) as an additional phase is suggested and resolved numerically for a typical ratio of reaction constants. Reagents and products concentrations are found as time-functions. In this way, the optimal route of production technology of boron carbide-based nanomaterials can be identified.

Evaluation of Hard Materials Using Eco-Attributes

2011 ◽  
Vol 325 ◽  
pp. 693-698 ◽  
Author(s):  
Md. Mamunur Rashid ◽  
A.M.M. Sharif Ullah ◽  
Junichi Tamaki ◽  
Akihiko Kubo
Keyword(s):  
Silicon Carbide ◽  
Energy Consumption ◽  
Boron Carbide ◽  
Surface Finish ◽  
Cutting Tools ◽  
The Other ◽  
Water Usage ◽  
Hard Materials ◽  
Abrasive Grains ◽  
Machining Operations

Hard materials based on Alumina (AN), Silicon Carbide (SC), Boron Carbide/Nitride (BC/N), Zirconia (ZN), and alike are often used to produce abrasive grains and coat cutting tools. These materials improve the performance of grinding/machining operations by providing an enhanced productivity, a longer grinder/tool life, and a better surface finish. On the other hand, they might leave some burdens on the environment. Therefore, eco-attributes (i.e., energy consumption, CO2 emission, NOX/SOX emission, water usage, recycle fraction, etc.) of these hard materials should be used to make an informed decision. This study deals with this issue and provides an evaluation of AN, SC, BC/N, and ZN based hard materials in terms of CO2 emission, NOX emission, SOX emission, and water usage. The outcomes of this study are useful for analyzing grinding and other abrasive processes for achieving eco-manufacturing.

Measurements in 3D images

1991 ◽  
Vol 49 ◽  
pp. 408-409
Author(s):  
John C. Russ
Keyword(s):  
Three Dimensional ◽  
Image Plane ◽  
X Rays ◽  
Traditional Use ◽  
3D Images ◽  
Confocal Scanning Laser Microscope ◽  
Hard Materials ◽  
Depth Direction ◽  
Confocal Scanning ◽  
Confocal Scanning Laser

Three-dimensional (3D) images consisting of arrays of voxels can now be routinely obtained from several different types of microscopes. These include both the transmission and emission modes of the confocal scanning laser microscope (but not its most common reflection mode), the secondary ion mass spectrometer, and computed tomography using electrons, X-rays or other signals. Compared to the traditional use of serial sectioning (which includes sequential polishing of hard materials), these newer techniques eliminate difficulties of alignment of slices, and maintain uniform resolution in the depth direction. However, the resolution in the z-direction may be different from that within each image plane, which makes the voxels non-cubic and creates some difficulties for subsequent analysis.

Dynamic X-ray imaging of the penetration of boron carbide

2000 ◽  
Vol 10 (PR9) ◽  
pp. Pr9-583-Pr9-588 ◽  
Author(s):  
W. A. Gooch ◽  
M. S. Burkins ◽  
G. Hauver ◽  
P. Netherwood ◽  
R. Benck
Keyword(s):  
Boron Carbide ◽  
X Ray ◽  
X Ray Imaging

PLASMA SPRAYING OF BORON CARBIDE USING TERNARY GAS MIXTURES

2010 ◽  
Vol 14 (4) ◽  
pp. 379-388
Author(s):  
S. Janisson ◽  
Armelle Vardelle ◽  
Michel Vardelle ◽  
Pierre Fauchais ◽  
E. Meillot
Keyword(s):  
Boron Carbide ◽  
Plasma Spraying ◽  
Gas Mixtures
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