scholarly journals "Coated diamonds": formed more often than we meet?

2019 ◽  
Keyword(s):  
Coated Diamonds

Comparison of Different Diamond Coatings in Co-Based Bond Matrix for Wire Saws

2006 ◽  
Vol 532-533 ◽  
pp. 385-388
Author(s):  
Hua Guo ◽  
Guo Qin Huang ◽  
Hui Huang ◽  
Xi Peng Xu
Keyword(s):  
Diamond Coatings ◽  
Bending Tests ◽  
Diamond Surfaces ◽  
The Matrix ◽  
Coated Diamonds

An investigation is reported of the effects of three different coatings onto diamonds in the composites for the beads of wire saws. The matrix of the composites contained 80% (w/w) cobalt. Ti, W, and W-Co were coated onto diamond surfaces respectively and then incorporated into the matrix. The mixed powders were hot-pressed to form the specimens for bending tests. Coupled with the results of bending tests and the strength of coated diamonds, the coatings of W were found to be best among the three coatings. Further experiments indicated that the thickness of W-coatings onto the diamonds should be controlled around 10(m in order to obtain an excellent retention of diamonds.

On the structure of coated diamonds

1965 ◽  
Vol 11 (110) ◽  
pp. 347-356 ◽  
Author(s):  
Y. Kamiya ◽  
A. R. Lang
Keyword(s):  
Coated Diamonds

Interface Design in Copper-Diamond Composite by Using PVD and CVD Coated Diamonds

2008 ◽  
Vol 59 ◽  
pp. 214-219 ◽  
Author(s):  
Erich Neubauer ◽  
G. Kladler ◽  
C. Eisenmenger-Sittner ◽  
J. Hell ◽  
C. Prentice ◽  
...  
Keyword(s):  
Thermal Diffusivity ◽  
Coating Thickness ◽  
Interface Design ◽  
Metal Matrix ◽  
Thermal Contact Resistance ◽  
Thermal Contact ◽  
Composite Manufacturing ◽  
Diamond Composite ◽  
Coated Diamonds

One of the key problems in copper-diamond composites is the interface between the metal matrix and the diamond reinforcement. In order to take advantage of the high thermal conductive diamond filler in a composite the design of the interface is crucial. One approach to minimize the thermal contact resistance between metal and diamond reinforcement is to coat the diamonds with functional layers, e.g. Mo or W. For coating of diamonds PVD and CVD have been used followed by characterization of coating thickness by different methods. The coated diamonds were used for composite manufacturing and the thermal diffusivity of the compacted materials was measured.

Constraints on the age and halogen composition of mantle fluids in Siberian coated diamonds

2002 ◽  
Vol 197 (3-4) ◽  
pp. 193-203 ◽  
Author(s):  
R. Burgess ◽  
E. Layzelle ◽  
G. Turner ◽  
J.W. Harris
Keyword(s):  
Mantle Fluids ◽  
Coated Diamonds

Influence of a TiС Coating on the Wear Resistance of Fe-Diamonds Composites

2012 ◽  
Vol 727-728 ◽  
pp. 275-280 ◽  
Author(s):  
Stenio Cavalier Cabral ◽  
Luciano José de Oliveira ◽  
Marcello Filgueira
Keyword(s):  
Wear Resistance ◽  
Composite Materials ◽  
Compression Test ◽  
Hot Pressing ◽  
Diametral Compression ◽  
Diamond Tools ◽  
Conventional Sintering ◽  
Coated Diamonds ◽  
Diametral Compression Test

Some diamond tools use iron in their composition, and it is known that iron is a strong catalyst for the graphitization of diamonds. This graphitization occurs mainly during the processing of composite materials - conventional sintering or hot pressing, and during cutting operations. This work studies the influence of the behavior of the wear and adhesion, of iron-diamond composites, by considering the use of TiC coated diamonds. Samples were prepared by mixing powders of Fe (40 μm) and diamond (425 μm), and subsequent hot pressing at 35MPa/900°C, for a time of 3 minutes. It was evaluated the mechanism of wear, and the behavior of the samples during diametral compression test. It was used the cumulative times of 2, 6, 12 and 20 minutes during the testing of abrasion.

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