Surface texture providing improved thermal spray adhesion

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United States of America Patent

PATENT NO 10106878
APP PUB NO 20170362691A1
SERIAL NO

15184699

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Abstract

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An improved substrate surface texture i.e., roughness, significantly improves the adhesion of thermal spray coatings. The surface texture is defined by two metrology parameters and the invention comprehends a range of average roughness (Sa) between 9 and 15 μm and developed interfacial area ratio (Sdr) of greater than 100%. This surface texture is achieved by methods such as water jet erosion, mechanical roughening, laser texturing, chemical etching and plasma etching. The surface texture is especially beneficial for walls of cylinders of internal combustion engines, hydraulic cylinders and similar components to which a thermal spray coating is adhered and which are exposed to sliding or frictional wear.

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Patent Owner(s)

  • GM GLOBAL TECHNOLOGIES OPERATIONS LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kramer, Martin S Clarkston, US 23 719
Li, Zhe Rochester, US 363 4574
Wang, Yucong West Bloomfield, US 70 474
Yang, Jianghuai Rochester Hills, US 32 16

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