- Author
-
Baker, M. A.
- Title
- Adherence of Porcelain Enamel to Aluminum.
- Coporate
- National Bureau of Standards, Washington, DC
- Sponsor
- Porcelain Enamel Inst., Washington, DC
- Report
-
NBS BSS 059,
November 1974,
45 p.
- Distribution
- Available from National Technical Information Service
- Keywords
-
adherence
|
aluminum
|
electron microprobe
|
electron microscope
|
precelain enamel
|
spalling
|
x ray diffraction
- Abstract
- Light and electron microscopy, electron microprobe, and X-ray diffraction techniques were used to determine the mechanisms of adherence of porcelain enamel to aluminum. A theory is presented that adherence depends upon diffusion of aluminum into the enamel and further, the diffusion zone should be relatively free of reaction products for the enamel-metal system to retain good adherence after exposure to chemical solutions or to weathering. Round-robin testing of 6063 aluminum alloy extrusions indicated that this alloy can be enameled if care is exercised in the selection of the enamel and the pretreatment.