Material Type: Platinum
Atomic Weight: 195.084
Atomic Number: 78
Color/Appearance: Metallic Gray
Thermal Conductivity: 72 W/m.K
Melting Point (°C): 1,772
Coefficient of Thermal Expansion: 8.8 x 10-6/K
Theoretical Density (g/cc): 21.45
Z Ratio: 0.245
Max Power Density*(Watts/Square Inch): 100
Type of Bond: Indium, Elastomer
Comments: Alloys with metals. Films soft, poor adhesion. Temperatures required to achieve deposition may not be practical for thermal evaporation.
Platinum is one of nine precious metals on the periodic table. It has a melting point of 1,772°C, a density of 21.4 g/cc, and vapor pressure of 10-4 Torr at 1,747°C. It is a radiant, silvery-white metal that bears a striking resemblance to palladium. It is dense, malleable, ductile, and corrosion resistant in the air. Its most prominent commercial application is as a catalytic converter in vehicles. Platinum is evaporated under vacuum for the manufacture of semiconductors, fuel cells, and batteries. It is also utilized as a layer for optical coatings. Platinum is commonly found in jewelry and laboratory instruments.
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Bought these and donated them to the local Community College chemistry lab.
Hope they be happy when they are to receive these gift.