Favorable prices of aluminium and it's alloys lead to an increasing interest of the electro industry to replace copper components with components made of aluminium. Joints of components that have to conduct high currents represent a critical point in the system. They have to ensure good electrical and thermal conductivity, resistance to corrosion and thermo-mechanical loading.
The theoretical part of the thesis contains detailed information about the types of aluminium alloys and their metallurgical properties, characteristics of brazing and basic knowledge about the possibility of bonding aluminium alloys with electrically conductive adhesives. Experimental work was focused on comparing bolted and brazed joints of two combinations of different aluminium alloys, regarding their electrical resistance and shear-tensile strength.
It was concluded that brazed joints with an appropriate gap have greater mechanical loading capacity than bolted joints and ensure higher electrical conductivity. Electrical conductivity of bolted joints can be increased with silver plating of surfaces, whereas greater mechanical loading capacity can be achieved with a better design of the joint.
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