scholarly journals Wear resistance of nano-polycrystalline diamond with various hexagonal diamond contents

2012 ◽  
Vol 34 (6) ◽  
pp. 343-349 ◽  
Author(s):  
A. Kurio ◽  
Y. Tanaka ◽  
H. Sumiya ◽  
T. Irifune ◽  
T. Shinmei ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Polycrystalline Diamond ◽  
Hexagonal Diamond

Examination of the material properties and performance of thin-diamond film cutting tool inserts produced by arc-jet and hot filament chemical vapor deposition

1996 ◽  
Vol 11 (7) ◽  
pp. 1765-1775 ◽  
Author(s):  
James M. Olson ◽  
Michael J. Dawes
Keyword(s):  
Wear Resistance ◽  
Chemical Vapor Deposition ◽  
Diamond Film ◽  
Vapor Deposition ◽  
Cutting Tool ◽  
Diamond Films ◽  
Chemical Vapor ◽  
Polycrystalline Diamond ◽  
And Performance ◽  
Hot Filament

Thin diamond film coated WC-Co cutting tool inserts were produced using arc-jet and hot-filament chemical vapor deposition. The diamond films were characterized using SEM, XRD, and Raman spectroscopy to examine crystal structure, fracture mode, thickness, crystalline orientation, diamond quality, and residual stress. The performance of the tools was evaluated by comparing the wear resistance of the materials to brazed polycrystalline diamond-tipped cutting tool inserts (PCD) while machining A390 aluminum (18% silicon). Results from the experiments carried out in this study suggest that the wear resistance of the thin diamond films is primarily related to the grain boundary strength, crystal orientation, and the density of microdefects in the diamond film.

Two-Layer Tool with Hardness Distribution Around Tool Edge for Reducing Cutting Forces in CFRP Machining

2016 ◽  
Vol 10 (3) ◽  
pp. 364-371 ◽  
Author(s):  
Satoru Maegawa ◽  
◽  
Shinya Hayakawa ◽  
Fumihiro Itoigawa ◽  
Takashi Nakamura ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Cutting Forces ◽  
Polycrystalline Diamond ◽  
High Wear Resistance ◽  
Reinforced Plastics ◽  
Narrow Region ◽  
Tool Edge ◽  
Fiber Reinforced Plastics ◽  
Flank Face ◽  
Low Wear

This study presents a method for extending the life of tools in cutting of Carbon-fiber-reinforced plastics (CFRP). In the previous study, our research group found that the use of two layer tool, which has a wear resistance distribution due to the use of a combination of two different materials with different hardnesses, is effective for decreasing cutting force during machining of CFRP composites. In the two layer tool, a narrow region of the flank face close to the tool edge and the whole of the rake face were made of a material with a relatively high wear resistance, e.g., diamond or polycrystalline diamond (PCD). In contrast, the other region of the flank face was made of a material with a relatively low wear resistance, e.g., tungsten carbide (WC-Co). In this study, based on some experiments, the effect of the thickness of high wear resistance region on the reduction effects of cutting forces was investigated.

Wear resistance of polycrystalline diamond cutters for drill bits

2017 ◽  
Vol 47 (9) ◽  
pp. 594-598 ◽  
Author(s):  
R. Yu. Kuftyrev ◽  
N. I. Polushin ◽  
O. S. Kotel’nikova ◽  
A. I. Laptev ◽  
M. N. Sorokin
Keyword(s):  
Wear Resistance ◽  
Polycrystalline Diamond ◽  
Drill Bits

Nanoengineered Polycrystalline Diamond Composites with Advanced Wear Resistance and Thermal Stability

2021 ◽  
Author(s):  
Valery Khabashesku ◽  
Vladimir Filonenko ◽  
Rustem Bagramov ◽  
Igor Zibrov ◽  
Alexander Anokhin
Keyword(s):  
Thermal Stability ◽  
Wear Resistance ◽  
Polycrystalline Diamond

Wear Characteristics of Various Diamond Tools in Cutting of Tungsten Carbide

2011 ◽  
Vol 325 ◽  
pp. 153-158 ◽  
Author(s):  
Akihiko Kubo ◽  
Yasushi Mochida ◽  
Junichi Tamaki ◽  
Katsuko Harano ◽  
Hitoshi Sumiya ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Tungsten Carbide ◽  
Vapour Deposition ◽  
Diamond Tool ◽  
Chemical Vapour ◽  
Polycrystalline Diamond ◽  
Wear Characteristics ◽  
Diamond Tools ◽  
Flank Face ◽  
Monocrystalline Diamond

Face cutting of tungsten carbide was conducted using two monocrystalline diamond tools and three polycrystalline diamond tools to investigate the wear characteristics in terms of the crystal structure and composition of the diamond. It was found that the wear of the monocrystalline diamond tool depends on the crystal planes that form the rake face and flank face of the cutting tool, and a cleavage fracture occurs when the cutting force acts as a shear force on the (111) crystal plane. The binderless nano-polycrystalline diamond tool exhibits excellent wear resistance beyond those of the sintered polycrystalline diamond tool and chemical vapour deposition polycrystalline diamond tool, as well as better wear resistance than the monocrystalline diamond tool.

scholarly journals Ultrastrong catalyst-free polycrystalline diamond

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Qiang Li ◽  
Guodong Zhan ◽  
Dong Li ◽  
Duanwei He ◽  
Timothy Eric Moellendick ◽  
...  
Keyword(s):  
High Pressure ◽  
Wear Resistance ◽  
High Temperature ◽  
Single Crystal ◽  
Polycrystalline Diamond ◽  
Industrial Applications ◽  
Catalyst Free ◽  
Single Crystal Diamond ◽  
New Material ◽  
Polycrystalline Diamond Compact

AbstractDiamond is the hardest naturally occurring material found on earth but single crystal diamond is brittle due to the nature of catastrophic cleavage fracture. Polycrystalline diamond compact (PDC) materials are made by high pressure and high temperature (HPHT) technology. PDC materials have been widely used in several industries. Wear resistance is a key material property that has long been pursued for its valuable industrial applications. However, the inevitable use of catalysts introduced by the conventional manufacturing process significantly reduces their end-use performance and limits many of their potential applications. In this work, an ultra-strong catalyst-free polycrystalline diamond compact material has been successfully synthesized through innovative ultra-high pressure and ultra-high temperature (UHPHT) technology. These results set up new industry records for wear resistance and thermal stability for PDC cutters utilized for drilling in the oil and gas industry. The new material also broke all single-crystal diamond indenters, suggesting that the new material is too hard to be measured by the current standard single-crystal diamond indentation method. This represents a major breakthrough in hard materials that can expand many potential scientific research and industrial applications.

Computer Simulation Technology of Precision Lapping Process of Polycrystalline Diamond

2012 ◽  
Vol 588-589 ◽  
pp. 1246-1250
Author(s):  
Qin Jian Zhang ◽  
Jian Yong Li ◽  
Yong Lin Cai ◽  
Heng Wang ◽  
Xiao Qing Yang
Keyword(s):  
Computer Simulation ◽  
Wear Resistance ◽  
Relative Velocity ◽  
Cutting Tools ◽  
Polycrystalline Diamond ◽  
Simulation Software ◽  
Instantaneous Velocity ◽  
Random Point ◽  
Simulation Technology ◽  
Abrasive Disk

Polycrystalline diamond, (PCD) is currently used in the industry for cutting tools of difficult-to-machine materials because of its superior characteristics such as hardness, toughness and wear resistance. But the PCD material is difficult to machine due to its above properties. Before making the PCD blank in varies tools, the lapping process is essential and necessary. The lapping quality depends heavily on the parameters. Therefore it is of great significance to study the path and velocity of lapping process for ensuring the lapping quality and uniform wear of abrasive disk. In this paper, on the basis of kinematics and geometry principle, the path equation was established. The complicated lapping process can be converted into two rotation movements, i.e. the movement of part against the center of lapping disk and rotation of fixture around its center. The relative path and relative velocity of random point of the part against abrasive disk were also analyzed and calculated. The computer simulation software was developed for figuring the path curves and instantaneous velocity of the lapping process. The results show that the abrasive disk can wear uniformly and the lapping quality can be raised. The application of computer simulation software provides the possibility to analyze the lapping principles, which is a simple, convenient and effective method.

Effect of removing internal residual metallic phases on wear resistance of polycrystalline diamond compacts

2012 ◽  
Vol 31 ◽  
pp. 187-191 ◽  
Author(s):  
Chengliang Liu ◽  
Zili Kou ◽  
Duanwei He ◽  
Ying Chen ◽  
Kaixue Wang ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Polycrystalline Diamond

A Novel Method for Obtaining Polycrystalline Diamond Cutters

2010 ◽  
Vol 660-661 ◽  
pp. 477-482
Author(s):  
Rômulo Crespo Tardim ◽  
Guerold Sergueevitch Bobrovinitchii ◽  
Sérgio Neves Monteiro ◽  
Ana Lúcia Diegues Skury ◽  
Marcello Filgueira
Keyword(s):  
Wear Resistance ◽  
Polycrystalline Diamond ◽  
Hard Metal ◽  
Diamond Layer ◽  
Novel Method ◽  
Sintering Conditions

The present work comprises a study about the possibility of obtaining polycrystalline diamond cutters through a novel method of sintering both layers at the same time. This possibility was tested through the sintering of a diamond layer over a hard metal (WC+15wt%Co) support under conditions of 5.0 and 6.5 GPa of pressure and 1400 to 1600º C of temperature. The sintering conditions were imposed in two ways: directly, or with pre-sintering. The samples were tested by measuring microhardness, wear resistance, densification, and SEM. The results of the tests have shown the possibility of obtaining good quality inserts by sintering both layers of compacted powder.

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