Abstract

Nitrogen-doped diamond-like carbon films were deposited on tool steel substrate througha plasma electrolytic technique. These coatings were fabricated using the hydrocarbons containing nitrogen vapor as a nitrogen and source. The formation of films was proved by Raman spectroscopy, X-ray diffraction patterns, and cross-section scanning electron microscopy. According to the results, by increasing the urea content, the highest amount of Raman intensity ratio for graphite/disordered graphite (ID/IG) was obtained 3.57. On the other hand, N-doped DLC, graphite and nitride phases in X-ray diffraction patterns were observed. The N-doped films had better tribological properties because of significant nitride phases and less surface roughness with an optimum amount of 1.229 μm for the sample with 4 wt. % urea. The friction coefficient of films was obtained as about 0.1–0.25. Subsequently, the sample with 4 wt. % urea indicated the maximum wear resistance by 70 m compared with 10 m resistance for the sample with 0 wt. % urea.

摘要

通过等离子体电解技术将掺氮类金刚石碳膜沉积在工具钢基材上。这些涂层是使用含氮蒸气作为氮源的碳氢化合物制成的。通过拉曼光谱、X 射线衍射图和横截面扫描电子显微镜证明了薄膜的形成。根据结果​​，通过增加尿素含量，石墨/无序石墨的拉曼强度比（ID/IG）的最高量为3.57。另一方面，在 X 射线衍射图中观察到 N 掺杂的 DLC、石墨和氮化物相。由于显着的氮化物相和较小的表面粗糙度，N 掺杂薄膜具有更好的摩擦学性能，对于具有 4 wt. % 尿素。薄膜的摩擦系数约为 0.1-0.25。随后，样品与 4 重量。% 尿素表明 70 m 的最大耐磨性与 0 wt. 样品的 10 m 耐磨性相比。% 尿素。