Influence of anodic oxide coatings on screwing behaviour and susceptibility to stress corrosion cracking of self-tapping aluminium screws

• Enhanced use of lightweight materials, namely aluminium and magnesium, requires the application of appropriate production techniques. Self-tapping screws represent an innovative joining technology. High-strength aluminium alloys can be used as screw material. Stringent requirements regarding the wear resistance of screw surfaces result from the thread-forming process. These requirements are met by oxide ceramic conversion layers produced by hard anodizing. Based on application-oriented testing methods, the influence of hard anodized layers on the screwing behaviour and susceptibility to stress corrosion cracking of high-strength aluminium screws is examined. 

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Materialteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Materials Engineering (hsv//eng)

Keyword

gewindefurchende Schrauben

Hartanodisieren

hochfestes Aluminium

Spannungsrisskorrosion

Verbindungselement

Anodic oxide coatings

Application-oriented

Hard anodizing

High-strength

Joining technology

Lightweight materials

Oxide ceramics

Production techniques

Self-tapping screws

Stringent requirement

Testing method

Aluminum

Magnesium

Protective coatings

Screws

Stress corrosion cracking

Anodic oxidation

Publication and Content Type

ref (subject category)

art (subject category)