work functionthermal electron currentTo investigate the stability of work function ( φ ) of polycrystalline refractory metals (Nb, Mo, Ta, W and Re), the thermal electron current ( J ) from a thin wire heated at a residual gas pressure of P r ≈1×10 7 Torr was measured as a ...
To investigate the stability of work function ( φ ) of polycrystalline refractory metals (Nb, Mo, Ta, W and Re), the thermal electron current ( J ) from a thin wire heated at a residual gas pressure of P r ≈1×10 7 Torr was measured as a function of wire temperature ( T ≈1200...
Production and Recovery of Electron-Induced Radiation Damage in a Number of Metals The changes in residual electrical resistance produced by bombardment with high-energy electrons were measured for a number of metals as a function of elec... PG Lucasson,RM Walker - 《Physical Review》 被引量: ...
Used of a boat or ship. b. To sail against the wind. 12. To undergo small motions that result in friction and wear: The gears work against each other. v.tr. 1. To cause or effect; bring about: working miracles. 2. To cause to operate or function; actuate, use, or manage: ...
Function Cutting Shape Band Saw Blade Coating Uncoated Type Bimetal Bandsaw MOQ 100m Tooth Type Zc/Sh/GB/Kl/G Applications Stainless Steel,Copper,Aluminum,Mild Steel Features Long Lifetime, High Precision, High Efficiency Sample Free Sample at Freight ...
For metals and semiconductors, the contact potential difference is determined, which is related to the sample's work function, while for insulators information about local charges is obtained. This chapter provides a brief introduction to non-contact atomic force microscopy and describes the details ...
The function is applied to derivation of upper bound theory for porous metals. This paper emphasizes the experimental approach to the determination of the coefficients for this function, relating them to the properties of porous materials (density) and forming conditions (pressure, temperature, strain...
Iron-oxide:fumesanddustsarecreatedduringmelting,burning,pouring,grinding,welding,andmachiningofferrouscastings UseLEVtoventthesefumes. MedicalProgram Baselinephysicalexaminations,includingchestx-rays,audiometrictests,andpulmonaryfunctiontests Periodicphysicalexaminationstodetectincipientdiseaseandtohelpreclassifyworkersasnee...
Installation and electrical connection of inductive sensorsProper installation is crucial for reliable inductive sensor function. Find out more about commissioning, installation and setting options. Furthermore, there is more information on the different output types (e...
A metal working compound is disclosed, especially for non-ferrous metals, adapted to be applied to the metal or to an instrument for working the metal. The compound comprises a solid fat glyceride and