2012 - Europe Direct Iasi
2012 - Europe Direct Iasi
2012 - Europe Direct Iasi
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6.4.<br />
Title<br />
Authors<br />
Institution<br />
EUROINVENT <strong>2012</strong><br />
cell with a cathode coated steel plate with the first layer<br />
obtained, NiZnP autocatalytic, anodes made from<br />
platinum plates, and a saturated calomel reference<br />
electrode, characterized in that the temperature is<br />
30÷40°C, applied voltage 0,7÷2,0 V, cathodic current<br />
density 70÷90 mA/cm2, anode-cathode distance 60÷80<br />
mm, area ratio anode / cathode 5/1, pH of the electrolyte<br />
solution 2÷2,5, ratio H3PO4/H3PO3 is 10/1, deposition time<br />
30÷60 minutes.<br />
Process and equipment for in-situ obtaining of aluminum<br />
alloys matrix composite materials reinforced with carbide<br />
particles<br />
Vasile Soare, Dumitru Mitrica, Petru Moldovan, Mihai<br />
Butu, Ioan Carcea<br />
Research and Development National Institute INCDMNR-<br />
IMNR<br />
“Gheorghe Asachi” Technical University of <strong>Iasi</strong><br />
Technical University of Bucharest<br />
Patent no. Patent application No. A 2010 00853<br />
Description<br />
The invention relates to a process and one equipment for<br />
obtaining composite materials with metallic matrix by<br />
aluminum alloys alloyed with carbide forming elements<br />
such as silicon, titanium, ceramic particle reinforced from<br />
silicon carbide, titanium, etc. obtained by in-situ process.<br />
This process is conducted in argon atmosphere by blowing<br />
gas introduced like CH4/Ar mixture, in aluminum - silicon<br />
alloy bath, methane dissociation and synthesis reaction of<br />
carbide formed between carbon and liquid alloy element.<br />
Composites with matrix of aluminum - silicon alloy and<br />
SiC particles reinforcement with small size of 5-10 μ, are<br />
obtained by blowing 10%CH4 / 9 % gas mixture in liquid<br />
alloy matrix containing min. 7% Si and 0.5-0.7 % Mg, at a<br />
temperature of 900-1100 ° C, with a duration of 5-10<br />
hours , then cooling and composite primary remelting at<br />
670-700 ° C, keeping 5-10 min. for homogenization and<br />
casting in molds.<br />
Obtaining composite materials with matrix of aluminum<br />
alloy particles reinforced by in situ process by blowing<br />
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