APPLICATION NOTE > 1 — 5p 2 5s 10 Kr4d OVER Form No. 97532 R6 + 3e, 0.38V 3+ In mks ‡ -6 0 -m Ω umetric: 7.0 x 10 133k-cal/g-mole Nuclear Properties Natural isotope distribution: Number Mass 113•115 115 Thermal neutron cross section For 2.2 km/s neutrons: % shown: Valences Atomic radius/Goldschmidt: Atomic number: 4.3 Photoelectric work function: Electronic structure: absorption,190± 10b; 95.7 energy:First ionization Mechanical Properties strength: Tensile 0.157nm K 3 also 2 and 1 295 76 4.12eV 4 scattering, 2.2± 0.5b Compressive strength: Hardness: 0.9HB Elastic modulus at 20°C: Poisson’s at 20°C: 49 Bulk modulus: modulus: Tensile MPa 1.6 15.0 12.74 GPa in tension 31.9 2.14 MPa 0.4498 10.6 GPa 35.3 GPa Electrical Properties Electrical resistivity: °C n Magnetic Properties Vol Magnetic susceptibility, 20 154 181 222 280 Electrochemical equivalent: Electrode potential: 84 291 3, 396.4µg/C 3.38 K — Super conducting Valence 301 319 348 In

Electronegativity: 1.7 Pauling’s Electronegativity:1.7

cient of thermal expansion:

Physical Constants of Pure Indium of Pure Constants Physical 2080 101.3 1693 10.13 1421 1.013 1215 0.1013 °C kPa Vapor pressure: Vapor Thermal conductivity: 83.7 W/m•K at 0°C Latent heat of vaporization: 1959.42 kJ/kg Latent heat of fusion: 28.47 kJ/kg 427 254 327 255 227 256 156.63 (liquid) 156.63 257 156.63 (solid) 156.63 264 127 252 25 233 °C J/kg•K Specifi c heat: Specifi 24.8µm/m•K at 20°C Linear, Coeffi Volume change on freezing, contraction 2.5% Volume Boiling point: 2080°C 300 Melting point: 156.6°C 6.916 271 Thermal Properties 6.939 228 6.974 194 7.001 164 7.026 20 7.30 °C gm/cc Density: Mass Characteristics Atomic weight: 114.82 and c = 0.49465 nm a = 0.32525 nm Face centered at 25°C: tetragonal Structure Structure APPLICATION NOTE lms of indium-tin oxide (ITO) on clear glass lms of indium-tin oxide (ITO) High-Purity Indium High-Purity 99.99999) is High-purity indium (99.9999 and used in III-V compound semiconductors such as laser diodes. Low-Temperature Alloys Low-Temperature basis for many low meltingIndium is also the These alloys arepoint fusible alloys. often used to hold products, such as eyeglass lenses or turbine productsblades, while the areon. being worked be removedThen the alloy can heat, with minimal keeping the product from damaged. Indium being also used with gallium to create alloys that is are liquid at room temperature. Thin Films Thin fi or plastic function as transparent electrical ectors. Typical conductors and/or infrared refl at panel lms of ITO include LCD fl uses of thin fi displays, touch screen CRT’s, EL lamps and and energydisplays, EMI shields, solar panels cient windows. Aircraft and automobile effi windshields are coated with ITO for demisting areand deicing. Other indium chemicals used in alkaline batteries, replacing toxic mercury compounds. ll voids between two

was the fi rst to begin commercialrst was the fi

Physical Constants of Pure Indium of Pure Constants Physical Typical Indium Applications Indium Typical pressure and will fi surfaces, even at cryogenic temperatures. cold welded to itself. It easily deforms under strengthen materials it is alloyed with. also be and glazed ceramics. Indium can In spite of the metal’s softness, it can In spite of the metal’s softness, bonding non-metals such as quartz, glass, expansion to be joined together. when an ideal bonding material, especially materials with different coeffi cients of thermalcients materials with different coeffi Bonding The unique properties of indium make it gold-plated parts. Its ductility will allow some occur with tin-based solder on gold or occur with tin-based solder on gold Indium will reduce gold scavenging that can and improved resistance to thermal fatigue. indium alloys exhibit lower crack propagationindium alloys exhibit lower crack Compared to conventional tin-lead solders, compositions, many advantages are realized. When indium is included in solder Soldering

applications, based on its unique attributes. applications, based Indium is used in a wide variety of Indium is used in of America of America metal. versatile silver-white Germany1863. In 1934, Indium Corporation in of this and marketer fabricator, ner, refi Indium, the 49th element, was discoveredIndium, the 49th in and is still the leading development of indium,