Use Copper Slag to Prepare Copper Matrix Composites

2011 ◽  
Vol 183-185 ◽  
pp. 1586-1590
Author(s):  
Wei Ping Liu

Copper slag was used to prepare copper powder by way of slurry electrolysis, and the copper powder was used to fabricate copper matrix composite materials reinforced with chemical plating surface modified alumina particulates. Alumina particulates were pretreated in ultrasonic field by chemical copper plating in order to make alumina particulates covered with a layer of copper film and form Al2O3/Cu composite powders. Copper matrix composite materials strengthened with alumina particulates were synthesized by means of pressure molding and sintering. Microstructure of copper matrix composites was researched by means of SEM. SEM analysis shows that alumina particulates distribute in the copper-based body evenly, and combine with copper closely. The effects of sintering temperature, pressure and alumina content on the compactness and hardness of copper matrix composites were studied by orthogonal tests. The compactness of composites increases with the sintering temperature and pressure increasing, and decreases with the alumina content increasing. The hardness of composite materials increases with the sintering temperature, pressure and alumina particulates increasing.

Author(s):  
Wenlin Ma ◽  
Jian Shang ◽  
Jinjun Lu ◽  
Junhu Meng

This chapter addresses fundamental issues (i.e. material issue and tribology issue) of the self-lubricating copper matrix composite under dry sliding contact. The development of metal matrix composites for tribological applications relies largely on a trial-and-error method because no adequate knowledge from tribology is involved. To make good metal matrix composites for tribological applications, knowledge from both materials science and tribology are required. This chapter comprehensively introduces the tribological aspect of self-lubricating copper matrix composites for tribological applications. The main mission of this chapter is to introduce the tribological consideration in fabricating copper matrix composite (Cu- graphite and Cu-SiO2 composites as examples) for tribological application. Material aspect (e.g. mixing method, sintering temperature) is briefly reviewed. The main concern is variations of chemical composition, microstructure, and property of tribo-layer of copper matrix composites sliding against different counter-face materials and under different operating conditions.


Author(s):  
Wenlin Ma ◽  
Jian Shang ◽  
Jinjun Lu ◽  
Junhu Meng

This chapter addresses fundamental issues (i.e. material issue and tribology issue) of the self-lubricating copper matrix composite under dry sliding contact. The development of metal matrix composites for tribological applications relies largely on a trial-and-error method because no adequate knowledge from tribology is involved. To make good metal matrix composites for tribological applications, knowledge from both materials science and tribology are required. This chapter comprehensively introduces the tribological aspect of self-lubricating copper matrix composites for tribological applications. The main mission of this chapter is to introduce the tribological consideration in fabricating copper matrix composite (Cu- graphite and Cu-SiO2 composites as examples) for tribological application. Material aspect (e.g. mixing method, sintering temperature) is briefly reviewed. The main concern is variations of chemical composition, microstructure, and property of tribo-layer of copper matrix composites sliding against different counter-face materials and under different operating conditions.


10.30544/567 ◽  
2020 ◽  
Vol 26 (4) ◽  
pp. 357-364
Author(s):  
Somesh Kr. Bhattacharya ◽  
Ryoji Sahara ◽  
Dušan Božić ◽  
Jovana Ruzic

Copper matrix composite materials have exhibited a high potential in applications where excellent conductivity and mechanical properties are required. In this study, the machine learning models have been applied to predict the hardness of the copper matrix composite materials (CuMCs) produced via the powder metallurgy technique. Six different machine learning regression models were employed. The observed CuMCs were reinforced with two different volume fractions (2 vol.% and 7vol.%) of ZrB2 particles. Based on experimental work, we extracted the independent variables (features) like the milling time (MT, Hours), dislocation density (DD, m-2), average particle size (PS, μm), density (ρ, g/cm3), and yield stress (σ, MPa) while the Vickers hardness (MPa) was used as the dependent variable. Feature selection was performed by calculation the Pearson correlation coefficient (PCC) between the independent and dependent variables. The predictive accuracy higher than 80% was achieved for Cu-7vol.% ZrB2 and lower for the Cu-2vol.% ZrB2.


2007 ◽  
Vol 561-565 ◽  
pp. 627-630
Author(s):  
Farid Akhtar

This study deals with the processing, microstructure and properties of the carbide reinforced copper matrix composites. Powder technology was used to successfully fabricate the composites. NbC particulates were used as reinforcements for copper matrix. The microstructure of the composite was characterized by scanning electron microscopy. The microstructural study revealed that the NbC particles were distributed uniformly in the matrix phase. No interface debonding and micro- cracks were observed in the composite. NbC particles were found in round shape in copper matrix composite. The composite hardness of 78 HRA was found with 60vol% NbC content. Electrical conductivity as high as 7%IACS was achieved. The wear performance and conductivity value predicts that NbC reinforced copper matrix composites can be used as sliding contact applications.


Copper based composites with SiC and Fly ash as reinforcement is prepared by powder metallurgy process. During processing of composites the compaction pressure is maintained as 400MPa for all combination of materials. The prepared green compacts were sintered on both 700℃ and 900℃ and the results microstructure and hardness obtained through Brinell harness test were compared.


2019 ◽  
Vol 6 (5) ◽  
pp. 056530
Author(s):  
Huiyan Xu ◽  
Zhenhua Li ◽  
Baoren Teng ◽  
Bo Ren ◽  
Xin Li

2021 ◽  
Vol 11 ◽  
pp. 1469-1479 ◽  
Author(s):  
Xiuhua Guo ◽  
Yubo Yang ◽  
Kexing Song ◽  
Li Shaolin ◽  
Feng Jiang ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document