oxide+of+aluminium
61Metal Oxide Varistor — Schaltzeichen Ein Varistor ist ein elektronisches Bauteil. Es handelt sich dabei um einen spannungsabhängigen Widerstand. Oberhalb einer bestimmten Schwellspannung, die typisch für den jeweiligen Varistor ist, wird der Widerstand abrupt kleiner.… …
62céramique à oxyde d'aluminium — aliuminio oksido keramika statusas T sritis radioelektronika atitikmenys: angl. aluminum oxide ceramics vok. Aluminiumoxidkeramik, f rus. алюмооксидная керамика, f pranc. céramique à oxyde d aluminium, f …
63Thermite — is a pyrotechnic composition of aluminium powder and a metal oxide which produces an aluminothermic reaction known as a thermite reaction. It is not explosive, but can create short bursts of extremely high temperatures focused on a very small… …
64Nano-thermite — A Nano thermite or super thermite [1] is a metastable intermolecular composite (MICs) characterized by its highly exothermic reaction after ignition. Nano thermites contain an oxidizer and a reducing agent, which are intimately mixed on the… …
65Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …
66Diamond simulant — Due to its low cost and close visual likeness to diamond, cubic zirconia has remained the most gemologically and economically important diamond simulant since 1976. The high price of gem grade diamonds, as well as significant ethical concerns of… …
67Hot cathode — is also a name for a hot filament ionization gauge, a vacuum measuring device.In vacuum tubes, a hot cathode is a cathode electrode which emits electrons due to thermionic emission. ( Cf. cold cathodes, where field emission is used and which do… …
68Strontium — (pronEng|ˈstrɒntiəm, ) is a chemical element with the symbol Sr and the atomic number 38. An alkaline earth metal, strontium is a soft silver white or yellowish metallic element that is highly reactive chemically. The metal turns yellow when… …
69Tricalcium aluminate — (3CaO.Al2O3) is the most basic of the calcium aluminates. It does not occur in nature, but is an important mineral phase in Portland cement.PropertiesPure tricalcium aluminate is formed when the appropriate proportions of finely divided calcium… …
70Cadwelding — is joining together two conductors of like or dissimilar materials by exothermic reaction. The process uses a mixture of several chemicals. A mixture of copper oxides (copper(II) oxide and copper(I) oxide) and aluminium powder provide the main… …
