Abstract:This paper presents a study about the influence of some alloying elements like Ni and Co on the elaboration of W-Cu electrical contacts. For the experimental work four types of mixture were prepared using mechanical alloying (MA) technique for six hours. All the samples had the same Ni and Co content (2%) varying the W content as following: 88W-10Cu-Ni, 78W-20Cu-Ni, 68W-30Cu-Ni, 88W-10Cu-Co, 78W-20Cu-Co and 68W-30Cu-Co. The mixtures were pressed in a cylindrical die with 10 mm diameter at two pressures: 400MPa… Show more
“…W-Cu materials are of a major interest for thermal-electrical applications like electrical contacts used in low voltage (LV), medium voltage (MV) and high voltage (HV) switching devices working in vacuum, sulfur hexafluoride (SF 6 ) gas or oil [1][2][3][4][5][6][7][8][9][10][11][12][13][14].…”
Section: Introductionmentioning
confidence: 99%
“…W-Cu materials are commonly used for arcing contacts in SF 6 gas or oil CBs for MV and HV applications [5][6][7][8][9][10][11][12][13][14]. Functional properties of W-Cu materials are influenced by their microstructure and physical, electrical, thermal and mechanical properties.…”
Section: Introductionmentioning
confidence: 99%
“…W-Cu composites are considered as pseudo-alloys and advanced engineering materials due to their specific physical, electrical, thermal and mechanical properties. W-Cu powder mixtures are produced by various methods, from which the common methods are mechanical mixing, mechanical alloying and high energy ball milling of elemental powders in dry or wet conditions [2][3][4][5][6][7][8][9][10][11][12][13][14].…”
Section: Introductionmentioning
confidence: 99%
“…W-Cu composites with a W content of over 50 wt.%, balance being Cu are manufactured by liquid phase sintering of a pressed W-Cu powder mixture or by pressing-sintering-infiltration (P-S-I) that implies molten Cu infiltration into single pressed and sintered W or W-Cu skeleton with low Cu content [5,[8][9][10][11][12][13][14][15]. The porous skeleton is filled up with liquid Cu through capillary force since Cu acts as a filling agent of pores [15].…”
Section: Introductionmentioning
confidence: 99%
“…Sintering additives are chose from transition metals (Ni, Fe, Co, Zn, Ag, a.o.) having the role of wetting agents between W and Cu particles [2,8,[11][12][13][14][15].…”
“…W-Cu materials are of a major interest for thermal-electrical applications like electrical contacts used in low voltage (LV), medium voltage (MV) and high voltage (HV) switching devices working in vacuum, sulfur hexafluoride (SF 6 ) gas or oil [1][2][3][4][5][6][7][8][9][10][11][12][13][14].…”
Section: Introductionmentioning
confidence: 99%
“…W-Cu materials are commonly used for arcing contacts in SF 6 gas or oil CBs for MV and HV applications [5][6][7][8][9][10][11][12][13][14]. Functional properties of W-Cu materials are influenced by their microstructure and physical, electrical, thermal and mechanical properties.…”
Section: Introductionmentioning
confidence: 99%
“…W-Cu composites are considered as pseudo-alloys and advanced engineering materials due to their specific physical, electrical, thermal and mechanical properties. W-Cu powder mixtures are produced by various methods, from which the common methods are mechanical mixing, mechanical alloying and high energy ball milling of elemental powders in dry or wet conditions [2][3][4][5][6][7][8][9][10][11][12][13][14].…”
Section: Introductionmentioning
confidence: 99%
“…W-Cu composites with a W content of over 50 wt.%, balance being Cu are manufactured by liquid phase sintering of a pressed W-Cu powder mixture or by pressing-sintering-infiltration (P-S-I) that implies molten Cu infiltration into single pressed and sintered W or W-Cu skeleton with low Cu content [5,[8][9][10][11][12][13][14][15]. The porous skeleton is filled up with liquid Cu through capillary force since Cu acts as a filling agent of pores [15].…”
Section: Introductionmentioning
confidence: 99%
“…Sintering additives are chose from transition metals (Ni, Fe, Co, Zn, Ag, a.o.) having the role of wetting agents between W and Cu particles [2,8,[11][12][13][14][15].…”
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