Ahn, HS Cuong, PD Shin, KH Lee, KS 2024-01-21T04:40:17Z 2024-01-21T04:40:17Z 2021-09-03 2005-07 0043-1648 https://pubs.kist.re.kr/handle/201004/136320 Boron carbide thin coatings were deposited on silicon wafers by DC magnetron sputtering using a B4C target with Ar as processing gas. Various amounts of methane gas (CH4) were added in the deposition process to better understand their influence on tribological properties of the coatings. Reciprocating wear tests employing an oscillating friction wear tester were performed to investigate the tribological behaviors of the coatings in ambient environment. The chemical characteristics of the coatings and worn surfaces were studied using X-ray photoelectron spectroscopy (XPS) and Auger electron spectroscopy (AES). It revealed that CH4 addition to Ar processing gas strongly affected the tribological properties of sputtered boron carbide coating. The coefficient of friction was reduced approximately from 0.4 to 0.1, and wear resistance was considerably improved by increasing the ratio of CH4 gas component from 0 to 1.2 vol.%. By adding an optimal amount of CH4 (similar to 1.2 vol.%) in the deposition process the boron carbide coating exhibited the lowest friction and highest wear resistance. (c) 2005 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA THIN-FILMS VAPOR-DEPOSITION Tribological behavior of sputtered boron carbide coatings and the influence of processing gas Article 10.1016/j.wear.2005.02.096 1 WEAR, v.259, pp.807 - 813 WEAR 259 807 813 scie scopus 000230370300002 2-s2.0-19844383744 Engineering, Mechanical Materials Science, Multidisciplinary Engineering Materials Science Article THIN-FILMS VAPOR-DEPOSITION boron carbide coating DC magnetron sputtering processing gas friction and wear X-ray photoelectron spectroscopy Auger electron spectroscopy