Effect of humidity on friction of carbon nitride coatings under N 2 gas lubrication

Koshi Adachi, Naoya Sodeyama, Koji Kato

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)


The effect of humidity on friction properties of carbon nitride (CNx) in nitrogen (N2) atmosphere were investigated by using a ball-on-disk tribo-tester in atmospheres with controlled humidity and oxygen concentration. It was concluded that friction coefficient in the combination of CNx/CNx and Si3N4/CNx in N2 gas atmosphere were reduced from the order of 0.1 to 0.01 by decreasing of humidity from 40 %RH to 0 %RH when the O2 concentration is kept below 100 ppm. Further, stability of low friction of CNx/CNx in N2 gas atmosphere was confirmed experimentally. The frictional pair of CNx/CNx provided low and a stable friction coefficient of 0.01 in 99.9% nitrogen gas condition under low relative humidity of 2% or less.

Original languageEnglish
Title of host publicationProceedings of the World Tribology Congress III - 2005
PublisherAmerican Society of Mechanical Engineers
Number of pages2
ISBN (Print)0791842029, 9780791842027
Publication statusPublished - 2005
Event2005 World Tribology Congress III - Washington, D.C., United States
Duration: 2005 Sept 122005 Sept 16

Publication series

NameProceedings of the World Tribology Congress III - 2005


Other2005 World Tribology Congress III
Country/TerritoryUnited States
CityWashington, D.C.

ASJC Scopus subject areas

  • Engineering(all)


Dive into the research topics of 'Effect of humidity on friction of carbon nitride coatings under N 2 gas lubrication'. Together they form a unique fingerprint.

Cite this