Nanocomposite tribological coatings with “chameleon” surface adaptation

Nanocomposite tribological coatings were designed to respond to changing environmental conditions by self-adjustment of their surface properties to maintain good tribological performance in any environment. These smart coatings have been dubbed “chameleon” because, analogous to a chameleon changing its skin color to avoid predators, the coating changes its “skin” chemistry and structure to avoid wear. The concept was originally developed using WC, diamondlike carbon, and WS2 material combination for adaptation to a humid/dry environment cycling. In order to address temperature variation, nanocomposite coatings made of yttria-stabilized zirconia (YSZ) in a gold matrix were developed with encapsulated nanosized reservoirs of MoS2 and diamondlike carbon (DLC). Coatings were produced using a combination of laser ablation and magnetron sputtering. They were characterized by x-ray photoelectron spectroscopy, x-ray diffraction, transmission electron microscopy, x-ray energy dispersive spectroscopy, and micro-Ram...

[1]  R. Hauert,et al.  From Alloying to Nanocomposites—Improved Performance of Hard Coatings , 2000 .

[2]  A. A. Voevodin,et al.  Architecture of multilayer nanocomposite coatings with super-hard diamond-like carbon layers for wear protection at high contact loads , 1997 .

[3]  G. Stachowiak,et al.  Unlubricated wear and friction of toughened zirconia ceramics at elevated temperatures , 1991 .

[4]  Andrey A. Voevodin,et al.  Combined magnetron sputtering and pulsed laser deposition of carbides and diamond‐like carbon films , 1996 .

[5]  J. Musil,et al.  Magnetron sputtering of films with controlled texture and grain size , 1998 .

[6]  P. D. Fleischauer,et al.  Applications of solid lubricant films in spacecraft , 1992 .

[7]  G. Pharr,et al.  An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments , 1992 .

[8]  A. A. Voevodin,et al.  Nanocomposite tribological coatings for aerospace applications , 1999 .

[9]  A. Voevodin,et al.  Investigation into three-dimensional laser processing of tribological coatings , 1998 .

[10]  P. T. Murray,et al.  Deposition and properties of MoS2 thin films grown by pulsed laser evaporation , 1988 .

[11]  Eitan Grossman,et al.  Systematic variation of the Raman spectra of DLC films as a function of sp2:sp3 composition , 1996 .

[12]  W. Gissler,et al.  Use of nanoscaled multilayer and compound films to realize a soft lubrication phase within a hard, wear-resistant matrix , 2000 .

[13]  A. Tanaka,et al.  The tribological characteristics of diamond-like carbon films at elevated temperatures , 1999 .

[14]  P. D. Fleischauer,et al.  Tribological performance and deformation of sputter-deposited MoS2 solid lubricant films during sliding wear and indentation contact. Technical report , 1990 .

[15]  T. Spalvins.  Frictional and morphological properties of Au-MoS2 films sputtered from a compact target , 1984 .

[16]  P. T. Murray,et al.  Deposition of stoichiometric MoS2 thin films by pulsed laser evaporation , 1989 .

[17]  S. Vepřek.  The search for novel, superhard materials , 1999 .

[18]  A. Voevodin,et al.  WC/DLC/WS2 nanocomposite coatings for aerospace tribology , 1999 .

[19]  E. Roberts.  Ultralow friction films of MoS2 for space applications , 1989 .

[20]  T. Spalvins.  A review of recent advances in solid film lubrication , 1987 .

[21]  A. Voevodin,et al.  Tribological properties of adaptive nanocomposite coatings made of yttria stabilized zirconia and gold , 2001 .

[22]  J. Zabinski,et al.  Synthesis and characterization of tungsten disulphide films grown by pulsed-laser deposition , 1994, Journal of Materials Science.

[23]  Andrey A. Voevodin,et al.  Nanocrystalline WC and WC/a-C composite coatings produced from intersected plasma fluxes at low deposition temperatures , 1999 .

[24]  Andrey A. Voevodin,et al.  Design of a Ti/TiC/DLC functionally gradient coating based on studies of structural transitions in Ti–C thin films , 1997 .

[25]  Stephen M. Hsu,et al.  Ceramic Wear Maps: Zirconia , 1993 .

[26]  Andrey A. Voevodin,et al.  Supertough wear-resistant coatings with ‘chameleon’ surface adaptation , 2000 .

[27]  Yan Liu,et al.  Evidence of graphitization of diamond-like carbon films during sliding wear , 1997 .

[28]  W. 0. Winer.  Molybdenum disulfide as a lubricant: A review of the fundamental knowledge , 1967 .

[29]  A. Voevodin,et al.  Load-adaptive crystalline–amorphous nanocomposites , 1998 .

[30]  P. N. Gibson,et al.  Microstructure and properties of nanocomposite Ti-B-N and Ti-B-C coatings , 1999 .

[31]  J. Schneider,et al.  Multilayer composite ceramicmetal-DLC coatings for sliding wear applications , 1996 .

[32]  T. Schneider,et al.  The Effects of Dopants on the Chemistry and Tribology of Sputter-Deposited MoS2 Films , 1995 .

[33]  John G. Jones,et al.  Structure control of pulsed laser deposited ZrO2/Y2O3 films , 2001 .

[34]  John G. Jones,et al.  Structural modification of single-axis-oriented yttria-stabilized-zirconia films under zirconium ion bombardment , 2001 .

[35]  A. A. Voevodin,et al.  Nanocrystalline carbide/amorphous carbon composites , 1997 .

[36]  William B. White,et al.  Characterization of diamond films by Raman spectroscopy , 1989 .

[37]  Andrew Wells Phelps,et al.  Friction induced phase transformation of pulsed laser deposited diamond-like carbon , 1996 .

[38]  J. Musil.  Hard and superhard nanocomposite coatings , 2000 .

[39]  A. A. Voevodin,et al.  Pulsed laser deposition of diamond‐like amorphous carbon films from graphite and polycarbonate targets , 1995 .

[40]  John G. Jones,et al.  Growth and structural characterization of yttria-stabilized zirconia–gold nanocomposite films with improved toughness , 2001 .

[41]  A. A. Voevodin,et al.  Tribological performance and tribochemistry of nanocrystalline WC/amorphous diamond-like carbon composites , 1999 .

[42]  B. Stupp.  Synergistic effects of metals co-sputtered with MoS2 , 1981 .