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Standard ČSN ISO 11877 1.4.2015 preview

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ČSN ISO 11877 (420849)

Hardmetals - Determination of silicon in cobalt metal powders - Photometric method



STANDARD published on 1.4.2015


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The information about the standard:

Designation standards: ČSN ISO 11877
Classification mark: 420849
Catalog number: 96881
Publication date standards: 1.4.2015
SKU: NS-583663
The number of pages: 12
Approximate weight : 36 g (0.08 lbs)
Country: Czech technical standard
Category: Technical standards ČSN

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Powder metallurgy

Annotation of standard text ČSN ISO 11877 (420849):

Tato norma umožní sjednotit fotometrický postup předmětného rozboru používaného v různých laboratořích a tím snížit nejistoty měření prezentovaných analytických výsledků. Tato analytická norma specifikuje fotometrickou metodu, která se používá ke stanovení hmotnostního podílu křemíku v rozsahu od 20 g/g do 300 g/g v kovových prášcích kobaltu. Po zpracování vzorku ve směsi kyselin se vzniklý tetrafluorid křemíku destiluje do směsi kyseliny borité a molybdenanu sodného. Vzniklý molybdenanokřemičitý komplex se extrahuje v metylizobutylketonu a měří se absorbční schopnost roztoku

Preview of the standard ČSN ISO 11877 (420849)

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Latest update: 2024-04-18 (Number of items: 2 859 866)
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