Abrasive wear of DLC/PVD multilayer coatings: AFM studies

被引：0
作者：
Martini, C. [1 ]
Prandstraller, D. [1 ]
Lanzoni, E. [1 ]
Poli, G. [1 ]
机构：
[1] Institute of Metallurgy, University of Bologna, Bologna
来源：
TriboTest | 2004年 / 10卷 / 03期
关键词：
Abrasive wear; AFM; Atomic force microscopy; DLC; DOE; Multilayer coating; PVD;
D O I：
10.1002/tt.3020100304
中图分类号：
学科分类号：
摘要：
The tribological behaviour of multilayered coatings deposited on plain carbon steel was investigated by microscale abrasion tests (MSATs). The multilayered coatings consisted of an outer diamond-like carbon (DLC) layer, a physical vapour deposition (PVD) nitride-based interlayer, and an inner electroless Ni-P layer. PVD TiN- and Ti(C,N)-coated samples with and without the DLC outer layer were studied in order to evaluate the influence of each layer on the tribological behaviour of the multilayer-coated system. The MSATs were carried out using a device based on ball-cratering geometry: a hard steel sphere was rotated against the coated specimen in the presence of an aqueous suspension of SiC particles. The wear coefficients of the multilayers were calculated from the diameter of the wear craters. The morphology of the wear scars produced by the MSATs was studied by atomic force microscopy (AFM). The wear damage was described by measuring the r.m.s. roughness (Sq) on the sides of the wear craters. Roughness values were related to the wear coefficients (kc) for the different multilayers on the basis of mathematical elaboration typical of the 'design of experiment' (DOE) statistical technique. The presence of the DLC outer layer reduced the roughness of the crater sides and significantly increased the wear resistance of the multilayer only in the case of the PVD TiN sublayer.
引用
收藏
页码：241 / 250
页数：9
相关论文
共 18 条
  • [1] Berger M., Wiklund U., Eriksson M., Engqvist H., Jacobson S., The multilayer effect in abrasion - Optimising the combination of hard and tough phases, Surf. Coatings Technol., 116-119, pp. 1138-1144, (1999)
  • [2] Wiklund U., Wanstrand O., Larsson M., Hogmark S., Evaluation of new multilayered physical vapour deposition coatings in sliding contact, Wear, 236, pp. 88-95, (1999)
  • [3] Nordin M., Larsson M., Hogmark S., Mechanical and tribological properties of multilayered PVD TiN/CrN, Wear, 232, pp. 22-25, (1999)
  • [4] Bhushan B., Sundararajan S., Micro/nanoscale friction and wear mechanisms of thin films using atomic force and friction force microscopy, Acta Mater., 46, 11, pp. 3793-3804, (1998)
  • [5] Bhushan B., Nano- to microscale wear and mechanical characterization using scanning probe microscopy, Wear, 251, pp. 1105-1123, (2001)
  • [6] Nobili L., Cavallotti P.L., Coccia L.G., De Ponti G., Lenardi C., a-C(:H) and a-CNx(:H) films deposited by magnetron sputtering and PACVD, Thin Solid Films, 317, 1-2, pp. 359-362, (1998)
  • [7] Grill A., Diamond-like carbon: State on the art, Diamond Relat. Mater., 8, 2-5, pp. 428-434, (1999)
  • [8] Grill A., Tribology of diamond-like carbon and related materials: An updated review, Surf. Coatings Technol., 94-95, pp. 507-513, (1997)
  • [9] Matthews A., Erskilden S.S., Engineering applications for diamond-like carbon, Diamond Relat. Mater., 3, pp. 903-911, (1994)
  • [10] Li K.Y., Zhou Z.F., Chan C.Y., Bello I., Lee C.S., Lee S.T., Mechanical and tribological properties of diamond-like carbon films prepared on steel by ECR-CVD process, Diamond Relat. Mater., 10, 9-10, pp. 1855-1861, (2001)
12