en

impurity

1

Terminological databases

EKI terminibaas Esterm

ID 695147 Last modified 03.05.2017
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Domain Electrical Engineeringsemiconductors
  • foreign atoms in a single-element semiconductor
  • foreign atoms or either an excess or a deficiency of atoms with respect to the stochiometric composition of a compound semiconductor
  • small proportion of foreign matter, eg arsenic, boron, phosphorus etc. added to a pure semiconductor, eg silicon to obtain the required type of conduction and conductivity of diodes, transistors and other solid-state devices
lisand
impurity
impureté

EKI terminibaas Esterm

ID 736936 Last modified 03.05.2017
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Domain Chemistry
lisand
  • toodetud aines esinev tahtmatu koostisosa
  • an unintended constituent present in a substance as manufactured
Good to know
  • Toodetud aines esinev tahtmatu koostisosa. See võib pärineda näiteks lähtematerjalidest või olla sekundaarsete või puudulike reaktsioonide tulemus tootmisprotsessi käigus. Kuna see esineb lõppaines, ei ole seda tahtlikult lisatud. Enamikul juhtudel moodustavad lisandid alla 10% ainest.
  • It may, for example, originate from the starting materials or be the result of secondary or incomplete reactions during the production process. While it is present in the final substance, it was not intentionally added. In most cases impurities constitute less than 10% of the substance.
lisand
saasteaine
impurity
Usage examples
  • For the purposes of this Regulation, the following definitions shall apply: ... (b) ‘substance’ means a chemical element and its compounds in the natural state or obtained by any manufacturing process, including any additive necessary to preserve its stability and any impurity deriving from the process used but excluding any solvent which may be separated without affecting the stability of the substance or changing its composition;
impureté
Verunreinigung
epäpuhtaus

Materjalitehnika terminibaas

ID 1122236 Last modified 26.08.2025
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Domain powder metallurgyceramic technologyiron foundry & steel foundry - metals & alloysnon-ferrous metalscastingmaterials science
kahjulik lisand preferred
  • mistahes element, mis ei ole materjali tahtlikult viidud kui legeeriv element (vt tavalisand, legeerelement/legeerlisand; vrd juhulisand, mikrolisand, jääklisand)
  • undesirable substance or chemical element, unlike alloying element (see: ordinary addition; compare: contaminant, trace element, residual element)
  • нежелательное вещество или химический элемент, в отличие от легирующего элемента (ср. посторонняя примесь, следовый элемент, остаточный элемент)
kahjulik lisand preferred
impurity

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