Structural Evaluation and Mechanical Properties of Aluminum/Tungsten Carbide Composites Fabricated by Continual Annealing and Press Bonding (CAPB) Process

2014 ◽  
Vol 45 (6) ◽  
pp. 1992-1999 ◽  
Author(s):  
Sajjad Amirkhanlou ◽  
Mostafa Ketabchi ◽  
Nader Parvin ◽  
G. P. C. Drummen
Keyword(s):  
Mechanical Properties ◽  
Tungsten Carbide ◽  
Structural Evaluation ◽  
Press Bonding

Manufacturing and Properties of Tungsten Carbide-Oxide Composites

2017 ◽  
Vol 742 ◽  
pp. 223-230 ◽  
Author(s):  
Anne Vornberger ◽  
Johannes Pötschke ◽  
Christian Berger
Keyword(s):  
Mechanical Properties ◽  
Tungsten Carbide ◽  
Metal Content ◽  
High Hardness ◽  
Metal Carbide ◽  
Hard Materials ◽  
Binder Free ◽  
Oxide Composites ◽  
Hardness Values ◽  
Binder Metal

Conventional WC-Co hardmetals are widely used in various applications due to their excellent properties. High hardness can be achieved using compositions with little to no content of cobalt or nickel. These binder metals are hazardous to health, making a substitution not only desirable because of availability and cost reasons. A new possibility to manufacture such hard materials is the combination of tungsten carbide with oxides such as Al2O3 and ZrO2. In this way the binder metal content can be replaced. Furthermore the content of the also expensive WC can be reduced. Such metal carbide – oxide composites with oxide contents between 16 vol% and 40 vol% were manufactured. The completely dense composites feature high hardness values of 2000 HV10 to 2400 HV10 while also having an acceptable fracture toughness of up to 7 MPa⋅m1/2. The improved mechanical properties make the replacement of WC-Co hardmetals and binder free WC ceramics in special areas possible.

scholarly journals Role of carbon addition on the microstructure and mechanical properties of cemented tungsten carbide and steel bilayer

2017 ◽  
Vol 92 (9-12) ◽  
pp. 3363-3371 ◽  
Author(s):  
O . J. Ojo-kupoluyi ◽  
S . M. Tahir ◽  
M. A. Azmah Hanim ◽  
B. T. H. T. Baharudin ◽  
K. A. Matori ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tungsten Carbide ◽  
Carbon Addition ◽  
Microstructure And Mechanical Properties ◽  
Cemented Tungsten Carbide

scholarly journals Effect of processing cycles on aluminum/tungsten carbide composites prepared by continual annealing and press bonding process

2014 ◽  
Vol 63 ◽  
pp. 012002
Author(s):  
Sajjad Amirkhanlou ◽  
Mostafa Ketabchi ◽  
Nader Parvin ◽  
Shohreh Khorsand ◽  
Fernando Carreño
Keyword(s):  
Tungsten Carbide ◽  
Bonding Process ◽  
Press Bonding

scholarly journals Microstructure and Mechanical Properties of Annealed WC/C PECVD Coatings Deposited Using Hexacarbonyl of W with Different Gases

Materials ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 3576 ◽  
Author(s):  
Peter Horňák ◽  
Daniel Kottfer ◽  
Karol Kyzioł ◽  
Marianna Trebuňová ◽  
Janka Majerníková ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Chemical Vapor Deposition ◽  
Tungsten Carbide ◽  
Coefficient Of Friction ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Deposition Process ◽  
Mechanical And Tribological Properties ◽  
Annealing Temperatures ◽  
Different Gases

The present work studies the tungsten carbide (WC/C) coatings deposited by using Plasma Enhanced Chemical Vapor Deposition (PECVD), with and without gases of Ar and N2. Volatile hexacarbonyl of W was used as a precursor. Their mechanical and tribological properties were evaluated. The following values were obtained by using deposition process with N2 of HIT = 19.7 ± 4.1 GPa, EIT = 221 ± 2.1 GPa, and coefficient of friction (COF) = 0.35 ± 0.09. Secondly, deposition without the aforementioned gas obtained values of HIT = 20.9 ± 2 GPa, EIT = 292 ± 20 GPa, and COF = 0.69 ± 0.05. WC/C coatings were annealed at temperatures of 200, 500, and 800 °C, respectively. Evaluated factors include the introduced properties, the observed morphology, and the structural composition of WC/C coatings. The process of degradation was carried out by using various velocities, depending on used gases and annealing temperatures.

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