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Nissan Motor and its partners Riken, Hitachi and Nippon ITF jointly developed and developed DLC coatings. DLC coating is a hydrogen-free diamond-like coating that can be used on valve lifters to improve fuel efficiency. The new product has the characteristics of low friction and high wear resistance. In essence, it is a non-crystalline carbon coating. Because it does not contain hydrogen molecular structure, it greatly reduces the resistance and improves the lubrication effect. At present, Nissan has begun to apply the coating to antennas and cars, which can reduce the friction between the cam and the valve lifter by about 40%.
Tokyo, Japan, Nissan's hydrogen-free diamond-like carbon (DLC) coating has been awarded the second Monozukuri Nippon by the Ministry of Trade and Economics (METI). Paint products and technology development awards.