Development of an Invar (Fe-36Ni) shadow mask for color cathode ray tubes

Effect of aging on microstructures and properties of Mo-alloyed Fe–36Ni invar alloy

“…The invar alloy plays an indispensable role in a wide range of fields such as precision instruments, TV kinescope, large electronic telescope base positioning devices, core wires of long-distance power cables, etc. [1][2][3][4]. In the recent years, it is necessary to develop high mechanical strength invar alloys together with a low CTE value to meet the rapid growing demand for applications of high-capacity power transmission wires, containers of liquid natural gas (LNG) and aeronautic composite-material moulds.…”

Wall Profile Developments in Through‐Mask Electrochemical Micromachining of Invar Alloy Films

“…Initially, maximum axial dissolution rate does not occur at r = 0 as explained by West et aI., 13 but gradually the etching rate in the axial direction becomes much faster than that of the radial direction and is slowly retarded as dissolution continues. To machine the hole with a diameter of 140 ~m, the time required is approximately 90 s (20~ which is fast compared with the chemical etching (240 -480 s) at high temperature (40 -50~ 15 The simulated etch factors, E F as a function of time were compared with the experimental values for the aspect ratio of 0.074 in Fig. 11.…”

Invar/WC Composite Compacts Obtained by Spark Plasma Sintering from Mechanically Alloyed Powders

“…The Invar’s coefficient of thermal expansion (CTE) at the ambient temperature is less than 2 × 10 −6 °C − 1 , as compared with the coefficient of thermal expansion of most metals, which is between (10−20) × 10 −6 °C −1 [ 2 , 3 ]. Due to their properties, the Invar-type alloys are used in high precision mechanical instruments, large size cryogenic liquid containers, large telescopes, electronic industry, or aerospace technology [ 4 , 5 , 6 ]. A disadvantage of the Invar alloys is that it has both low mechanical strength and hardness, due to its crystalline structure.…”