Wear Properties of Electrodeposited Titanium Diboride Coatings

Details

• Personal Author:
  Flinn, David R. ; Kirk JA ; Lynch, Michael J. ; Van Stratum BG
• Description:
  A newly developed chemical conditioning technique, which greatly simplifies the preparation of plating baths for the electrodeposition of titanium diboride (tib2) coatings, is described in this report. The new plating technique was used to prepare samples of titanium diboride (tib2) coatings on three types of substrate materials. These samples were then evaluated in both low- and high-speed wear-test programs to determine the wear resistence, microhardness, and adhesion of the coatings. In general, it was found that the wear resistance of the coatings is independent of substrate. Scanning electron micrographs have shown that the coating wear surfaces are very smooth, suggesting slow and continuous removal of the coating during the wear test (that is, adhesive wear). Adhesion between the coating and all substrates was excellent. Microhardness results show that the tib2 coating is harder than alumina, with a hardness value exceeding 5,000 kg/mm2 measured in one test. The results of the wear tests show that tib2 coatings have relatively poor wear resistance compared with alumina in low-speed unlubricated sliding environments, but exhibit wear properties comparable with alumina in high-speed unlubricated sliding environments. [Description provided by NIOSH]
• Subjects:
  Adhesives Chemistry Occupational Health Safety
• Keywords:
  Coatings; Chemical composition; Wear resistance; Scanning electron microscopy; Materials testing; Adhesives; Alumina
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Conference Publications ; Case Report
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  AVRC - Avondale Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-30
• NIOSHTIC Number:
  nn:10006662
• CAS Registry Number:
  Alumina (CAS RN 1344-28-1)
• Federal Fiscal Year:
  1981
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:470e57234bd4cdab5c7a330c34f29183f93f88ac09059975c87137352bda4b1d6f53d1d98755f8bf7d2702d0c23350c82f3073a0f25d4ab9d4334c3854af52dc
• Download URL:
  https://stacks.cdc.gov/view/cdc/237648/cdc_237648_DS1.pdf
• File Type:
  [PDF - 11.13 MB ]