Synergistic regulation of current-carrying wear performance of resin matrix carbon brush composites with tungsten copper composite powder

2021 ◽  
Vol 28 (10) ◽  
pp. 2973-2987
Author(s):  
Chuan-jun Tu ◽  
Pei Gong ◽  
Gai-mei Ren ◽  
Gang Chen ◽  
Jian Chen ◽  
...  
Keyword(s):  
Composite Powder ◽  
Resin Matrix ◽  
Wear Performance ◽  
Synergistic Regulation ◽  
Copper Composite

scholarly journals Comparison of dynamic tensile extrusion behaviour of WCu composites made by different processes

2018 ◽  
Vol 183 ◽  
pp. 03004
Author(s):  
Leeju Park ◽  
Sanghyun Woo ◽  
Yerim Lee ◽  
Keunho Lee ◽  
Young Sun Yi
Keyword(s):  
Composite Powder ◽  
Tungsten Powder ◽  
The Other ◽  
Metal Injection Molding ◽  
Oil Well ◽  
Well Completion ◽  
Extrusion Die ◽  
Steel Target ◽  
Copper Composite ◽  
Molding Methods

Composites with 60~90% of tungsten are used in liners of some specialty shaped charges. The penetration is enhanced by a factor against copper for homogeneous steel target. Tungsten powder based shaped charge liners are also especially suitable for oil well completion. In this study, WCu composites manufactured by different process are used for testing of dynamic tensile extrusion (DTE) behaviour. One samples were made by copper infiltrated method. The other samples were manufactured by metal injection molding methods with reduced tungsten copper composite powder. DTE tests were carried out by launching the sphere samples (Dia. 7.62mm) to the conical extrusion die at a speed of ~375m/s. The DTE fragmentation behaviour of tungsten copper composites after soft-recovered were examined and compared with each other.

Preparation of Tungsten-Copper Composite Powder by Electroless Plating

2013 ◽  
Vol 749 ◽  
pp. 28-34
Author(s):  
Ying Wang ◽  
Jun Tao Zou ◽  
Qing He Zhang
Keyword(s):  
Composite Powder ◽  
Tungsten Powder ◽  
Solution Temperature ◽  
Formaldehyde Concentration ◽  
Copper Plating ◽  
Electroless Copper Plating ◽  
Powder Surface ◽  
Operation Conditions ◽  
Electroless Copper ◽  
Copper Composite

In this paper, tungsten-copper composite powder was prepared on the particle size of 6 ~ 10μm tungsten powder surface by electroless copper plating. The orthogonal experimental results show that the primary and secondary order of factors affecting the deposition rate followwing the sequence: copper sulfate solution concentration > pH value> solution temperature> formaldehyde concentration > complexing agent concentration. The process of the electroless copper plating on the tungsten powder surface was investigated, and the best electroless copper plating solution composition and operation conditions were obtained as follows: plating temperature 323 K, stirring speed 30 r/min, PH =13, loadage 8g/L, CuSO4 5H2O 0.032 mol/L, HCHO 0.274 mol/L, TEA 0.1208 mol/L, 2, 2 'league pyridine 12 mg/L.

Consolidation of tungsten-coated copper composite powder

2002 ◽  
Vol 17 (8) ◽  
pp. 2075-2084 ◽  
Author(s):  
L. P. Dorfman ◽  
D. L. Houck ◽  
M. J. Scheithauer
Keyword(s):  
Powder Metallurgy ◽  
Composite Powder ◽  
Low Density ◽  
Test Results ◽  
Copper Composite ◽  
Microstructural Homogeneity

Powder metallurgy (P/M) methods have expanded in recent years to include net-shape fabrication of W–Cu components. Sintering of W–Cu compacts made from previous powders has led to low density and copper bleedout. This paper presents test results on the consolidation of a new powder containing particles composed of a tungsten-coated copper core. This powder effectively eliminates copper bleedout at sintering thereby making possible the net-shape manufacturing of parts. Sintered articles are characterized by microstructural homogeneity and properties comparable to those of infiltrated W–Cu composites.

scholarly journals A study of the structure and properties of material based on an iron – copper composite powder

2019 ◽  
Vol 2 (12 (98)) ◽  
pp. 44-50
Author(s):  
Anatoly Minitsky ◽  
Ievgen Byba ◽  
Nataliya Minitska ◽  
Sergey Radchuk
Keyword(s):  
Composite Powder ◽  
Structure And Properties ◽  
Iron Copper ◽  
Copper Composite
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