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Nikasil was introduced by Mahle in 1967 and was initially developed to allow Wankel engine apex seals to work directly against the aluminum block. [1] This coating allowed aluminum cylinders and pistons to work directly against each other with low wear and friction.
Such phase transformations lead to crack formation within the top coating. Recent efforts to develop an alternative to the YSZ ceramic topcoat have identified many novel ceramics (e.g., rare earth zirconates) exhibiting superior performance at temperatures above 1200 °C, but with inferior fracture toughness compared to that of YSZ.
On January 21, 2015, Axalta and Chinese industrial coatings firm Shanghai Kinlita Chemical formed a partnership to operate in China. [11] In April 2015, Berkshire Hathaway invested $560 million in Axalta Coating Systems. [12] In July 2016, the firm acquired United Paint and Chemical Corp.'s automotive interior coatings business. [13]
Thermal spraying can provide thick coatings (approx. thickness range is 20 microns to several mm, depending on the process and feedstock), over a large area at high deposition rate as compared to other coating processes such as electroplating, physical and chemical vapor deposition. Coating materials available for thermal spraying include ...
One dominant solution to aftermarket upgrades is the use of a ceramic coating applied via thermal spraying as a heat shield. This not only reduces heat loss and lessens back pressure, but also provides an effective way to protect the exhaust system from wear and tear, thermal degradation, and corrosion.
Coatings used in modern motorcycles include chromium, [13] nitride, [14] or ceramic coating made by plasma deposition [15] or physical vapour deposition (PVD). [ 16 ] [ 17 ] Most modern diesel engines have top rings coated with a modified chromium coating (known as CKS or GDC), [ 13 ] [ dead link ] which has aluminium oxide or diamond ...
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