| dc.description.abstract | CuNi alloy is an excellent alloy because of its Solid Solution properties. CuNi alloy is known
as a material with good electrical conductivity at high temperatures but poor mechanical
properties. To improve the mechanical properties, it is done by adding Mo. Adding Mo alone
was not enough to improve so SiC was added. This improvement can be achieved in various
ways, including adding metal alloying elements, increasing compaction pressure and
appropriate sintering temperatures in powder metallurgy processes. This research aims to
determine the effect of variations in SiC composition in (CuNi)-5wt.%Mo alloy on
microstructure, mechanical properties and electrical conductivity. The materials used in this
research were Copper (Cu), Nickel (Ni), Molybdenum (Mo) and Silicon Carbide (SiC)
powders. The process of mixing 0%, 1%, 2% and 3% SiC powder using the horizontal grinding
method was carried out for 2 hours at a speed of 300 Rpm. The powder was compacted at a
temperature of 250 Mpa for 15 minutes to produce Green Compact, followed by sintering at a
temperature of 770⁰C for 120 minutes with an electric muffle furnace. The test results obtained
were that the specimens produced with the 3% SiC variation had the best mechanical
properties compared to the 0%, 1% and 2% variations, where this specimen had a density of
6.32 gr/cm3, a hardness of 58.3 VHN, maximum stress loading 20 tons 407 Mpa, electrical
conductivity 3.541 x 107 S/m, in conclusion, Variation of 3% SiC in powder metallurgy has an
important role in producing good composite mechanical properties | en_US |
