Effect of DLC and Si-DLC Films Deposited on Engineering Plastics on Tribological Properties

抄録

Improving the sliding properties of plastic materials adds significant industrial value. Diamond-like carbon (DLC) is well known for its exceptional characteristics as a coating material, offering remarkable attributes such as low friction and high wear resistance. It has been the subject of extensive study. Therefore, this study attempts to investigate the effect of DLC coating on plastic materials. Among plastic materials, engineering plastics were selected as the base material because of their superior mechanical properties and heat resistance. However, because it is necessary to consider temperature when depositing films on plastic materials, DLC with different source gases was deposited via low- temperature treatment utilizing plasma chemical vapor deposition. After deposition, the effects of the low-temperature treatment and its effects on the adhesion, mechanical properties, and friction and wear properties of the DLC films to the plastic substrate were investigated. The results revealed that the deposition speed was independent of the processing temperature. Moreover, as the percentage of elements impeding carbon bonding in the raw deposition gas decreased, the resulting DLC film exhibited superior performance in terms of friction and wear resistance.