ISO 15379-2:2015 PDF

Carbonaceous materials for the production of aluminium — Cathode block materials — Part 2: Determination of the expansion due to sodium penetration without application of pressure

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Title (English):

ISO 15379-2:2015

Carbonaceous materials for the production of aluminium — Cathode block materials — Part 2: Determination of the expansion due to sodium penetration without application of pressure

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 5
Publication date:: May 22, 2015
Edition:: ISO IS 15379 edition 2 version 1
ICS:: 71.100.10

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Description (English):

ISO 15379-2:2015 specifies a method that covers the determination of linear expansion under external pressure due to sodium penetration in cathode-block materials used in the production of aluminium. The linear expansion of the blocks depends on the sampling direction due to anisotropy.

Technical details

Technical committee: ISO/TC 226 - Materials for the production of primary aluminium
SKU: ISO 15379-2:2015

Abstract

Overview

ISO 15379-2:2015 defines a laboratory test method for measuring linear expansion of cathode block materials due to sodium penetration without applied pressure. The standard is aimed at carbonaceous materials used in aluminium production and specifies a controlled electrolysis test in a cryolitic bath to quantify sodium-induced swelling (sodium penetration / sodium-induced expansion). Results help assess material performance and predict risks like block bulging, cracking, and cell relining.

Key topics and technical requirements

Scope and purpose: Determines maximum relative linear expansion (%) caused by sodium penetration when no external pressure is applied. Notes that expansion is anisotropic and depends on sampling direction.
Sample geometry and sampling: Sample diameter (30.0 ± 0.1) mm, length 100 mm; central drilled hole 6 mm ∅ threaded to (25 ± 5) mm; sampling per ISO 8007-1 and orientation must be reported.
Test bath and temperature: Cryolitic bath with a cryolite ratio of 4.0 (composition detailed in the standard), total bath mass 765 g; furnace maintained at (980 ± 5) °C with

Related standards

Mentioned in the description and other ISO standards

Overview

Key topics and technical requirements

Scope and purpose: Determines maximum relative linear expansion (%) caused by sodium penetration when no external pressure is applied. Notes that expansion is anisotropic and depends on sampling direction.
Sample geometry and sampling: Sample diameter (30.0 ± 0.1) mm, length 100 mm; central drilled hole 6 mm ∅ threaded to (25 ± 5) mm; sampling per ISO 8007-1 and orientation must be reported.
Test bath and temperature: Cryolitic bath with a cryolite ratio of 4.0 (composition detailed in the standard), total bath mass 765 g; furnace maintained at (980 ± 5) °C with

ISO 15379-2:2015 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Related standards

Abstract

Overview

Key topics and technical requirements

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