Work

Chemical deoxidation with Cr-free solution for less-polluting pretreatment of aviation aluminium alloy

Year: 2024

Type: article

Abstract: Deoxidation via chemical etch is an important step in the pretreatment of aluminium alloy chemical oxidation. Typically, the chemical deoxidation of aluminium alloy is carried out in triacid solution that contains chromic anhydride. While the use of Cr (VI) in triacid solution can cause severe chemical contamination. In this paper, we have developed a Cr-free solution for deoxidation, iron sulphate and etch inhibitors are selected to replace Cr (VI). The formula of deoxidation solution was optimised through the combination of single-factor method and Box-Behnken method. The results show that the Cr-free deoxidation solution we proposed shows a deoxidation effect comparable to that of a triacid solution.

Source: Corrosion Engineering Science and Technology The International Journal of Corrosion Processes and Corrosion Control

DOI: 10.1177/1478422x241270134

Authors: Dongdong Li, Xinying Xu, Pan Tian, Yu Fu, Baihang He, Yang Wang, Lanxuan Liu

Institution: State Key Laboratory of Special Surface Protection Materials and Application Technology

Language: English

Topic: Corrosion Behavior and Inhibition

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W4401767398

FWCI: 0.288

Cites: 34

Cited by: 3

Related to: 10