Sintered Materials for Electrical Contacts

Katmanlı Parçacıklar Kullanılarak Üretilen Bakır Esaslı Malzemelerin Karakterizasyonu

“…Bakır ve gümüş esaslı malzemeler yüksek elektriksel ve termal iletkenliklerinden dolayı elektronik endüstrisinde yaygın bir şekilde kullanılmaktadır. Elektrik ve elektronik malzemeleri arasında en dikkat çekici olanlar kesikli sürtünme ve ark erozyonuna maruz kalan elektrik kontak malzemeleri ve sürekli aşınmaya maruz kalan elektrik fırçası malzemeleridir (Boyer ve Gall, 1985;Desforges, 1979;Nadkarni ve ark., 1984;Nystrom ve ark., 1990). Yüksek elektriksel ve termal iletkenlik, yüksek aşınma direnci ve iyi oksidasyon direnci, bu tür malzemeler için gerekli özelliklerdir (ASM Metals Handbook, 1990;Chen ve Sawa, 1996;Coxe ve ark., 1990).…”

Processing copper and silver matrix composites by electroless plating and hot pressing

“…[1,25] Copper electroplating on continuous graphite rial. [1,2,12,15] Recently, toxic CdO has been replaced by SnO 2 fibers, which were subsequently consolidated by hot pressing, was previously investigated. [31] No similar electroplating on powders, whiskers, and short fibers has been reported.…”

“…Such applications include electrical processes. [1,23,25,31,39,40] Traditional casting is not useful contact materials such as make-break contacts and because of the poor wettability between ceramic particles and brushes, [1][2][3][4][5][6] which are subjected to severe arc erosion, molten metals, leading to clustering of the dispersoids. Furresulting in material damage.…”

“…[16,[25][26][27][28] However, because the electrical performance of SnO 2 /Ag contacts is not very good, other compos-COPPER-and silver-based alloys and composites have ites were developed to replace them. [29][30][31][32][33][34][35] been well developed and applied in the electronic industry Metal matrix composites can be produced by liquid metalfor several decades, because of their high electrical and lurgy, [3,36] powder metallurgy, [1][2][3]27,28,37,38] and other complex thermal conductivity. Such applications include electrical processes.…”

“…On the negative side, the oxide distribution is SnO 2 /Ag, ZnO/Ag, and TiO 2 /Ag. [1][2][3][4]23-27] Among them, not uniform, with an oxide depletion zone present and oxide CdO/Ag is exempt from melt-welding at the contact point segregation occurring at grain boundaries and the component and has been selected as an electrical contact matesurface. [1,25] Copper electroplating on continuous graphite rial.…”