Preparation and properties of TiB2 nanoparticle reinforced copper matrix composites by in situ processing

2002 ◽  
Vol 52 (6) ◽  
pp. 448-452 ◽  
Author(s):  
J.P Tu ◽  
N.Y Wang ◽  
Y.Z Yang ◽  
W.X Qi ◽  
F Liu ◽  
...  
Keyword(s):  
Copper Matrix ◽  
Matrix Composites ◽  
Copper Matrix Composites ◽  
In Situ Processing

scholarly journals In-situ processing of TiB2 nanoparticle-reinforced copper matrix composites

2009 ◽  
Vol 41 (2) ◽  
pp. 143-150 ◽  
Author(s):  
D. Bozic ◽  
I. Cvijovic-Alagic ◽  
B. Dimcic ◽  
J. Stasic ◽  
V. Rajkovic
Keyword(s):  
Composite Powder ◽  
Hot Isostatic Pressing ◽  
Copper Matrix ◽  
Dispersed Phase ◽  
Matrix Composites ◽  
Small Particles ◽  
Standard Powder ◽  
In Situ Processing ◽  
Tib2 Particles

In order to produce the composite powder analyzed in this paper, two prealloys were melted and afterwards gas atomized. The obtained TiB2-reinforced copper powder was consolidated by hot isostatic pressing (HIP). Since it is known that a decrease in the size of the reinforcing phase can cause an increase in hardness of composites, the main aim of the experimental work was to obtain as small particles of the dispersed phase as possible by using standard powder metallurgy techniques. Microstructure and microhardness of the ascast prealloys, as-atomized powder and HIP-ed compacts were examined. The results of these examinations revealed that TiB2 particles about 10 nm in size were in-situ formed and homogenously dispersed in the copper matrix. As a consequence of the TiB2 formation, the microhardness of Cu-TiB2 composite was significantly improved.

In situ preparation of copper-matrix composites

1993 ◽  
Vol 12 (20) ◽  
pp. 1635-1636
Author(s):  
A. Chrysanthou ◽  
G. Erbaccio ◽  
J. V. Wood
Keyword(s):  
Copper Matrix ◽  
Matrix Composites ◽  
Copper Matrix Composites ◽  
In Situ Preparation

Low-Wear High-Friction Behavior of Copper Matrix Composites Dispersed With an In Situ Polymer Derived Ceramic

2015 ◽  
Vol 137 (2) ◽  
Author(s):  
Enzo Castellan ◽  
Satish V. Kailas ◽  
Shimjith Madayi ◽  
Rishi Raj
Keyword(s):  
Copper Matrix ◽  
Matrix Composites ◽  
Wear Properties ◽  
Friction Behavior ◽  
Ceramic Phase ◽  
Copper Matrix Composites ◽  
Polymer Derived Ceramic ◽  
Friction And Wear Properties ◽  
Low Wear

We show that copper-matrix composites that contain 20 vol. % of an in situ processed, polymer-derived, ceramic phase constituted from Si-C-N have unusual friction-and-wear properties. They show negligible wear despite a coefficient of friction (COF) that approaches 0.7. This behavior is ascribed to the lamellar structure of the composite such that the interlamellar regions are infused with nanoscale dispersion of ceramic particles. There is significant hardening of the composite just adjacent to the wear surface by severe plastic deformation.

Sign in / Sign up

Export Citation Format

Share Document