Cobalt-tin alloy coating on aluminum by chemical conversion

Details Cobalt-tin alloy coating on aluminum by chemical conversion Cobalt-tin alloy coating on aluminum by chemical conversion

1999-05-24

2000-10-24

Jones, Deborah

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

148243, 148273, 148275, 148285, 428650, 428652, 428628, 428629, 428469, 4289088, 428926, 428936, B32B 1501, C23C 2200

Patent

active

061364541

ABSTRACT:
An aluminum or aluminum alloy surface which during use is exposed to sliding friction is coated to provide a chemical conversion coating of tin comprising 0.2-10.0 wt. % cobalt. For example, a swash plate type compressor has a cylinder block with cylinder bores disposed parallel to the axis of the cylinder block. A rotary shaft rotatably mounted within the cylinder block carries an aluminum swash plate. The swash plate has a coating preferably between 0.8 to 2.5 microns. The coating on the swash plate permits the use of low silicon alloy aluminum without the need of metal plating or high finish polishing.

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