Coating processes – Coating by vapor – gas – or smoke – Carbon or carbide coating
Patent
1990-03-08
1991-04-09
Morgenstern, Norman
Coating processes
Coating by vapor, gas, or smoke
Carbon or carbide coating
427250, 427252, 427253, 4272552, 4272551, 427404, 427405, 4274177, C23C 1608, C23C 1632
Patent
active
050063715
ABSTRACT:
An improved highly erosive and abrasive wear resistant multi-layered coating system on a substrate which provides protection against impact of large particles is disclosed comprising a plurality of composite layers. In each of the composite layers, the first layer closest to the substrate comprises tungsten of sufficient thickness to confer substantial erosion and abrasion wear resistance characteristics to the coating system and a second layer deposited on the first layer comprises a mixture of tungsten and tungsten carbide and the tungsten carbide comprises W.sub.2 C, W.sub.3 C, or a mixture of both. Because the resulting coating system has enhanced high cycle fatigue strength over the substrate, the coating system is especially useful on such structures as turbine blades and similar articles of manufacture where such chemical vapor depositing the first and second layers at a temperature in the range of about 300.degree. to about 550.degree. C. and then repeating the chemical vapor deposition steps to achieve the multi-layered coating system such that the overall thickness of the system is at least about 20 .mu.m.
REFERENCES:
patent: 2872350 (1959-02-01), Homer et al.
patent: 3150938 (1964-09-01), Pelton et al.
patent: 3230110 (1966-01-01), Smith
patent: 3368914 (1968-02-01), Darnell et al.
patent: 3389977 (1968-06-01), Tarver
patent: 3574672 (1971-04-01), Tarver
patent: 3721577 (1973-03-01), Woerner
patent: 3814625 (1974-06-01), Lewin et al.
patent: 4741975 (1988-05-01), Naik et al.
patent: 4761346 (1988-08-01), Naik
Dyer Paul N.
Fabregas Keith R.
Garg Diwakar
Mueller Carl F.
Schaffer Leslie E.
Air Products and Chemicals Inc.
Bueker Margaret
Dannells, Jr. Richard A.
Marsh William F.
Morgenstern Norman
LandOfFree
Low temperature chemical vapor deposition method for forming tun does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low temperature chemical vapor deposition method for forming tun, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low temperature chemical vapor deposition method for forming tun will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2033497