увод
ИСО (Међународна организација за стандардизацију) је глобална федерација националних тела за стандардизацију (Тела чланица ИСО). Развој међународних стандарда се обично спроводи преко ИСО техничких комитета. Свака група чланова заинтересована за предмет за који је формиран технички комитет има право да буде заступљена у комисији. Међународне организације, владе и невладине организације у контакту са ИСО такође су укључене у овај посао. ИСО блиско сарађује са Међународном електротехничком комисијом (ИЕЦ) о свим питањима електричне стандардизације.

Парт 1 of the ISO/IEC Directive describes the procedures used to develop this document and for further maintenance. Нарочито, треба обратити пажњу на различите критеријуме одобрења који су потребни за различите типове ИСО докумената. This document has been drafted in accordance with the editorial rules of ISO/IEC Directive Part 2 (види исо.орг/дирецтивес).

Имајте на уму да неки елементи овог документа могу бити предмет патентних права. ИСО није одговоран за идентификацију било ког или свих таквих патената. Details of any patent rights identified during the development of the document will be found in the introduction and/or list of ISO Patent declarations received (see iso.org/patents).

Any trade names used in this document are provided as information for the convenience of the user and do not constitute an endorsement.

ИСО 11844-1-2020 Корозија метала и легура – Classification of low atmospheric corrosion in chambers – Парт 1: Determination and estimation of corrosion in chambers

Voluntary interpretation, related standards and conformity assessment related ISO specific terminology and express the meaning of and the ISO in the technical barriers to trade (ТБТ) adhere to the principle of the world trade organization (WTO) information, please see the iso.org/iso/foreword.html.

This document, prepared by the ISO/TC 156 Technical Committee on Corrosion of Metals and Alloys in collaboration with the CEN/TC 262 Technical Committee on Metals and Other Inorganic Coatings of the European Committee for Standardization (CEN), covers corrosion protection and corrosion testing of metals and alloys. According to the Technical Cooperation Agreement between ISO and CEN (Vienna Agreement).

The second edition cancels and replaces the first edition (ИСО 11844-1:2006), which has been technically revised. The main changes compared with the previous edition are as follows:

– Added a reference to the ISO 16000 series in Article 7;

– Added a model for estimating indoor concentrations and deposition of pollutants originating outdoors;

Lead has been used as a standard sample for high sensitivity to vaporous organic acids.

A list of all the parts in the ISO 11844 series can be found on the ISO website.

Any feedback or questions on this document should be referred to the user’s national standards body. A complete list of these institutions can be found at iso.org/members.html.

ИСО 11844-1-2020 Корозија метала и легура – Classification of low atmospheric corrosion in chambers – Парт 1: Determination and estimation of corrosion in chambers

увести

Metals, alloys and metal coatings are susceptible to atmospheric corrosion under the influence of air humidity, especially when gaseous and solid substances of atmospheric pollution work together. The importance of corrosion data in deriving appropriate corrosion protection or assessing the suitability of a product’s metallic elements cannot be overstated.

ИСО 9223 classifies atmospheric environments into six corrosive categories.

A low corrosive indoor atmosphere is an indoor atmosphere that meets the C 1 (very low) or C 2 (low) corrosive category of ISO 9223.

The classification in ISO 9223 is too broad for certain uses in low-corrosive indoor atmospheres, such as places to store electronic equipment, precision technology products, or art and historical objects.

For this reason, it is necessary to subdivide the corrosivity categories C 1 (very low) and C 2 (low) into the indoor corrosivity categories given in this document.

The assessment of low corrosive indoor atmospheres can be done by directly determining the corrosion attack of the selected metal (see ISO 11844-2) or by measuring environmental parameters that may cause corrosion of metals and alloys (see ISO 11844-3).

ИСО 11844-1-2020 Корозија метала и легура – Classification of low atmospheric corrosion in chambers – Парт 1: Determination and estimation of corrosion in chambers

This document describes general procedures for deriving and estimating categories of indoor corrosivity.

The purpose of this document is to describe the characteristics of low-corrosive indoor atmospheric environments that may affect metals and metal coatings during storage, transport, installation or operational use, to establish a consistent classification of indoor corrosivity and to provide for the deduction and estimation of procedural indoor corrosivity classes.

The scheme shown in Figure 1 gives a general method for classifying indoor atmospheric corrosivity.

шипак. 1 Classification scheme of indoor atmospheric low corrosion

шипак. 1 Classification scheme of indoor atmospheric low corrosion

1 Обим примене
The document establishes a classification of low corrosive atmospheres in indoor environments.

It specifies the reference metal that is used to determine the corrosive class of the low corrosive indoor atmosphere after a specified exposure period of corrosion attack.

It defines the corrosive class of the indoor atmosphere in terms of corrosion erosion on standard samples.

It indicates the important parameters of indoor atmosphere, which can be used as the basis for estimating indoor corrosivity.

ИСО 11844-2 gives the selection of methods for measuring corrosion, description of standard samples, exposure conditions and assessment. The measurement of environmental parameters affecting indoor corrosion is given in ISO 11844-3.

ИСО 11844-1-2020 Корозија метала и легура – Classification of low atmospheric corrosion in chambers – Парт 1: Determination and estimation of corrosion in chambers

2 Нормативни референтни документи
There are no normative references in this document.

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminology databases for standardization at the following addresses:

– ISO online browsing platform: iso.org/obp

– ИЕЦ Елецтропедиа: доступно на елецтропедиа.орг/

3.1 Climate

The statistics of temperature, влажност, притисак, wind, rainfall and other meteorological elements in a certain place over a long period of time

[Извор: ИН 15759-1:2011, 3.1]

3.2 Atmosphere

A mixture of gases, aerosols, and particles surrounding a given material, object, or structure

ИСО 11844-1-2020 Корозија метала и легура – Classification of low atmospheric corrosion in chambers – Парт 1: Determination and estimation of corrosion in chambers

3.3 Indoor Atmosphere

The environment [the combined influence of climate (3.1) and atmosphere (3.2)] is inside a box, room, or building

3.4 Microclimate

The climate (3.1) of a small area, a specific room, part of a building, итд., may differ from that of a general area

3.5 Temperature and Humidity Complex

Combined effects of temperature and relative humidity on atmospheric corrosivity (3.10)

[Извор: ИСО 9223:2012, 3.4]

3.6 Wet Time

The period in which the surface of a metal is covered by an adsorption film and/or liquid film of an electrolyte that can cause atmospheric corrosion

[Извор: ИСО 9223:2012, 3.5]

ИСО 11844-1-2020 Корозија метала и легура – Classification of low atmospheric corrosion in chambers – Парт 1: Determination and estimation of corrosion in chambers

3.7 Air Pollution

Specific corrosive active substances, gases or suspended particles in the air (natural and human activities)

3.8 Corrosion System

A system consisting of one or more metals and environmental components that affect corrosion

[Извор: ИСО 8044:2020, 3.4, modified — Белешка 1 to the entry has been removed.]

3.9 Корозија

The ability of the environment to cause metal corrosion in a given corrosion system (3.8)

[Извор: ИСО 8044:2020, 3.14]

ИСО 11844-1-2020 Корозија метала и легура – Classification of low atmospheric corrosion in chambers – Парт 1: Determination and estimation of corrosion in chambers

3.10 Atmospheric corrosiveness

The ability of the atmosphere to cause corrosion in a given corrosion system (3.8)

Example: Atmospheric corrosion of a given metal or alloy.

[Извор: ИСО 9223:2012, 3.1, modified – an example added.]

Јаван је само одељак са стандардним информацијама. Да бисте видели цео садржај, морате купити стандард преко званичних канала.