Corrosion of a High Intensity Discharge Lamp

950596

02/01/1995

Event
International Congress & Exposition
Authors Abstract
Content
A connector subassembly for an automotive High Intensity Discharge (HID) lamp failed a 672 hour salt fog test. The connector backshell, made from either nickel plated or anodized A413.0 aluminum alloy, corroded heavily where a braided electromagnetic interference (EMI) shield was attached. Pitting corrosion enhanced by the presence of chloride ions and a galvanic cell is the cause. Five design concepts are evaluated and then ranked based on cost, assembly ease, schedule impact, and aesthetics. For the leading design, the nickel plated backshell remained, but a nickel plated braid and polymer clamp replaced the existing shield and clamp.
Meta TagsDetails
DOI
https://doi.org/10.4271/950596
Pages
10
Citation
Smith, M., Sakaguchi, K., Carroll, C., Gabriel, T. et al., "Corrosion of a High Intensity Discharge Lamp," SAE Technical Paper 950596, 1995, https://doi.org/10.4271/950596.
Additional Details
Publisher
Published
Feb 1, 1995
Product Code
950596
Content Type
Technical Paper
Language
English