Reference

Wear-resistant aluminum alloys for cylinders and cylinders liners

Wear-resistant aluminum alloys for cylinders and cylinders liners. (Laystall Engineering Co., Ltd.; Izumi Automotive Industry Co., Ltd., UK). Jpn. Kokai Tokkyo Koho JP 59043895 A2 12 Mar 1984 Showa, 7 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C25D007-00. ICA: C25D005-48. APPLICATION: JP 82-149354 30 Aug 1982. DOCUMENT TYPE: Patent CA Section: 56 (Nonferrous Metals and Alloys) Section cross-reference(s): 72 Al alloy engine cylinders or their inner surfaces are coated with Fe 40-80, Ni 20-100, or Cr 20-100 m thick, and 600-2000 SiC particles/mm2 are embedded in the coated surface by lapping. The lapping process consists of (1) supplying process for a slurry contg. lapping oil and SiC particles 40-70 m diam. (2) permanent embedding process for the hard particles on the coated surface by applying pressure with a lapping tool and repeating motion of the tool on the coated surface to create cross shaped fine grooves (3) 2nd supplying process for the slurry contg. lapping oil and SiC particles 15-40 m diam. to the surface (4) permanent embedding process of the 2nd slurry (5) final finishing lapping. Thus, the inner wall of an AC 4C [3768-18-1] cylinder having a 110 mm inner diam. was electroplated with a ~50 m-thick Cr layer in a bath contg. CrO3 200 g/L at 10 A/dm2 for 100 min. The coated surface was embedded with SiC particles.