ASTM G69-2020 測(cè)定鋁合金潛在腐蝕性的標(biāo)準(zhǔn)試驗(yàn)方法

ASTM G69-2020發(fā)行信息

標(biāo)準(zhǔn)號(hào)ASTM G69-2020

中文名 測(cè)定鋁合金潛在腐蝕性的標(biāo)準(zhǔn)試驗(yàn)方法

英文名 Standard Test Method for Measurement of Corrosion Potentials of Aluminum Alloys

發(fā)布日期2020

實(shí)施日期

廢止日期無(wú)

國(guó)際標(biāo)準(zhǔn)分類號(hào)77.120.10 (Aluminium and aluminium alloys)

發(fā)布單位US-ASTM

ASTM G69-2020適用范圍

1.1 This test method covers a procedure for measurement of the corrosion potential (see Note 1) of an aluminum alloy in an aqueous solution of sodium chloride with enough hydrogen peroxide added to provide an ample supply of cathodic reactant.

NOTE 1:The corrosion potential is sometimes referred to as the open-circuit solution or rest potential. See Terminology G193.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

注1：腐蝕電位有時(shí)稱為開(kāi)路電位或靜止電位。見(jiàn)術(shù)語(yǔ)G193。

1.2以國(guó)際單位制表示的數(shù)值應(yīng)視為標(biāo)準(zhǔn)值。本標(biāo)準(zhǔn)不包括其他計(jì)量單位。

1.3本標(biāo)準(zhǔn)并非旨在解決與其使用相關(guān)的所有安全問(wèn)題（如有）。本標(biāo)準(zhǔn)的使用者有責(zé)任在使用前建立適當(dāng)?shù)陌踩?、健康和環(huán)境實(shí)踐，并確定監(jiān)管限制的適用性。

1.4本國(guó)際標(biāo)準(zhǔn)是根據(jù)世界貿(mào)易組織技術(shù)性貿(mào)易壁壘（TBT）委員會(huì)發(fā)布的《關(guān)于制定國(guó)際標(biāo)準(zhǔn)、指南和建議的原則的決定》中確立的國(guó)際公認(rèn)標(biāo)準(zhǔn)化原則制定的。

1.1本試驗(yàn)方法包括測(cè)量鋁合金在氯化鈉水溶液中的腐蝕電位（見(jiàn)注1）的程序，該溶液中添加了足夠的過(guò)氧化氫，以提供充足的陰極反應(yīng)物。