Download or read book FRICTION AND WEAR PROPERTIES OF A DLC BASED FUNCTIONALLY GRADIENT NANOCOMPOSITE COATINGS NASA TM 1998 206962 AUG 6 1998 written by United States. National Aeronautics and Space Administration and published by . This book was released on 1999* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1999 with total page 1144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Friction and Wear Properties of a DLC Based Functionally Gradient Nanocomposite Coatings written by and published by . This book was released on 1998 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sliding Wear and Fretting Wear of DLC Based Functionally Graded Nanocomposite Coatings written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-15 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Improving the tribological functionality of diamondlike carbon (DLC) films--developing, good wear resistance, low friction, and high load-carrying capacity-was the aim of this investigation. Nanocomposite coatings consisting of an amorphous DLC (a-DLC) top layer and a functionally graded titanium-titanium carbon-diamondlike carbon (Ti-Ti(sub x) C(sub y)-DLC) underlayer were produced on AISI 440C stainless steel substrates by the hybrid technique of magnetron sputtering and pulsed-laser deposition. The resultant DLC films were characterized by Raman spectroscopy, scanning electron microscopy, and surface profilometry. Two types of wear experiment were conducted in this investioation: sliding friction experiments and fretting wear experiments. Unidirectional ball-on-disk sliding friction experiments were conducted to examine the wear behavior of an a-DLC/Ti-Ti(sub x) C(sub y)-DLC-coated AISI 440C stainless steel disk in sliding contact with a 6-mm-diameter AISI 440C stainless steel ball in ultrahigh vacuum, dry nitrogen, and humid air. Although the wear rates for both the coating and ball were low in all three environments, the humid air and dry nitrogen caused mild wear with burnishing, in the a-DLC top layer, and the ultrahigh vacuum caused relatively severe wear with brittle fracture in both the a-DLC top layer and the Ti-Ti(sub x) C(sub y)-DLC underlayer. For reference, amorphous hydrogenated carbon (H-DLC) films produced on a-DLC/Ti-Ti(sub x) C(sub y)-DLC nanocomposite coatings by using an ion beam were also examined in the same manner. The H-DLC films markedly reduced friction even in ultrahigh vacuum without sacrificing wear resistance. The H-DLC films behaved much like the a-DLC/Ti-Ti(sub x) C(sub y)-DLC nanocomposite coating in dry nitrogen and humid air, presenting low friction and low wear. Fretting wear experiments were conducted in humid air (approximately 50% relative humidity) at a frequency of 80 Hz and an amplitude of 75 micron on an a-DLC/Ti-Ti(sub x
Download or read book Sliding Wear and Fretting Wear of DLC Based Functionally Graded Nanocomposite Coatings written by and published by . This book was released on 1999 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Northeast Missouri Soil Health Guide written by and published by . This book was released on 1999 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Farmer Direct Marketing Bibliography written by Jennifer-Claire V. Klotz and published by . This book was released on 1998 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book U S Government Subscriptions written by and published by . This book was released on 1999 with total page 864 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Childhood Obesity Causes Prevention written by and published by . This book was released on 1999 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a conference on the causes and prevention of obesity in children.
Download or read book Your Guide for the American Community Survey written by and published by . This book was released on 2002 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cotton Ginnings written by and published by . This book was released on 1972 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cotton ginned by counties.
Download or read book 1997 Census of Agriculture written by and published by . This book was released on 1999 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Income Tax Treatment of Cooperatives Patronage refunds written by Donald A. Frederick and published by . This book was released on 1993 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ricky Ray Hemophilia Relief Fund Act of 1998 written by United States and published by . This book was released on 1998 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quick Bibliography Series written by National Agricultural Library (U.S.). Reference Division and published by . This book was released on 1992 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Mulberry Empire written by Philip Hensher and published by HarperCollins UK. This book was released on 2016-08-25 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: The bestselling novel from the Man Booker Prize shortlisted author of The Northern Clemency and King of the Badgers.
