Vacuum-coated compound body and process for its production

Details Vacuum-coated compound body and process for its production Vacuum-coated compound body and process for its production

1995-05-22

1997-12-02

Turner, Archene

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428216, 428469, 428472, 428698, 428701, 428702, 2041921, 20419215, 20419222, C23C 800

Patent

active

056934173

ABSTRACT:
Vacuum coated compound body and a process for its production. Such compound bodies, when coated in a known manner, have a carrier of a metal or of an alloy, a layer that is thermally, mechanically and chemically unstable, with their surface showing cracks and being partially porous. These shortcomings are overcome via an improved eco-friendly vacuum deposition process wherein at least one layer of a material having an outer layer is of Al.sub.2 O.sub.3, is applied to the metal or alloy carrier at a maximum of 700.degree. C., with this layer being completely crystalline and comprised of an .alpha.Al.sub.2 O.sub.3 phase and possibly of a .gamma.Al.sub.2 O.sub.3 phase with a (440) texture, having a compressive stress of at least 1 Gpa and a hardness of at least 20 Gpa, with the Al.sub.2 O.sub.3 layer being deposited via reactive magnetron sputtering, wherein the magnetrons are pulse powered, the pulse frequency lies between 20 and 100 Khz, and the deposition rate is at least 1 nm/s, with the compound bodies being utilized for cutting treatments, particularly as drills, milling cutters, reamers, broaches or saw blades.

REFERENCES:
patent: Re32110 (1986-04-01), Hale
patent: 3836392 (1974-09-01), Lux et al.
patent: 3914473 (1975-10-01), Hale
patent: 4180400 (1979-12-01), Smith et al.
patent: 4357382 (1982-11-01), Lambert et al.
patent: 4399168 (1983-08-01), Kullander et al.
patent: 4463062 (1984-07-01), Hale
patent: 4608098 (1986-08-01), Hale
patent: 4619866 (1986-10-01), Smith et al.
patent: 4984940 (1991-01-01), Bryant et al.
patent: 5071696 (1991-12-01), Chatfield et al.
patent: 5137774 (1992-08-01), Ruppi
patent: 5256266 (1993-10-01), Blanchette et al.
patent: 5350607 (1994-09-01), Tyson et al.
patent: 5357389 (1994-10-01), Blanchette et al.
patent: 5487625 (1996-01-01), Ljungberg et al.
patent: 5492606 (1996-02-01), Stauder et al.
patent: 5543019 (1996-08-01), Lee et al.
European Search Report of EPO 96 10 6600.
"Characterization of .alpha.-A1.sub.2 O.sub.3, k-A1.sub.2 O.sub.3 and .al.-k Multioxide Coating on Cemented Carbides", Thin Solid Films, 193/194, pp. 536-546 (1990).
"Alumina Deposition by Activated Reactive Evaporation", Thin Solid Films, 40, pp. 211-216 (1977).
English translation of: JP-59-40223, published Sep. 28, 1984.
Thornton and Chin, "Structure and Heat Treatment Characteristics of Sputter-Deposited Alumina", Ceramic Bulletin, vol. 56, No. 5, 1977, pp. 504-512, cited and described on p. 3, first full paragraph, of the instant application.
Scherer, Latz, and Patz; Proc. 7th Int. Conf. IPAF, Geneva, 1989, pp. 181 et al., entitled "A novel solution for the fast deposition of A1203 by DC reactive magnetron sputering", cited and described on p. 3, penultimate paragraph, of the instant application.
Bunshah, Schramm; entitled "Alumina deposition by activated reactive evaporation", in Thin Solid Films 40 (1977), pp. 211-216, cited and described on p. 4, first paragraph, of the instant application.

Affiliated with

Also associated with

Rating

Vacuum-coated compound body and process for its production does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vacuum-coated compound body and process for its production, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum-coated compound body and process for its production will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-799701