HF-resistant ceramics and use thereof

Details HF-resistant ceramics and use thereof HF-resistant ceramics and use thereof

1993-11-15

1995-05-02

Bell, Mark L.

Compositions: coating or plastic

Coating or plastic compositions

Corrosion inhibiting coating composition

10628717, 1062865, 1062868, 1062866, 501119, 501153, 501127, C04B 3510

Patent

active

054115833

ABSTRACT:
Hydrogen fluoride-resistant articles are disclosed which have HF contact surfaces consisting essentially of sintered, single phase, polycrystalline, solid solution alumina and magnesia ceramic. The ceramic has a magnesia content equal to or less than the solubility limit of magnesia in alumina at the sintering temperature for the ceramic. Also disclosed are processes using such surfaces as HF contact surfaces.

REFERENCES:
patent: 3026210 (1962-03-01), Coble
patent: 3484376 (1969-12-01), Paris et al.
patent: 4442676 (1984-04-01), Rudolph et al.
patent: 4762655 (1988-08-01), Rhodes et al.
patent: 4766260 (1988-08-01), Manzer et al.
patent: 4797238 (1989-01-01), Rhodes et al.
patent: 5015791 (1991-05-01), Rao
patent: 5051537 (1991-09-01), Manzer
patent: 5136113 (1992-08-01), Rao
Roy et al, "Solubilities of Magnesia, Titania, and Magnesium Titanate in Aluminum Oxide", Jour Amer Soc, 51(1) pp. 1-6, 1968, No month.
Bennett, J. P., "Corrosion Resistance of Selected Ceramic materials to Sulfuric Acid", Bureau of Mines Report of Investigations, Report No. 9011, U.S. Dept. of the Interior, 1986. No month.
Avgustinik, A. I. et al., "Thermodynamic Analysis of the Interaction of Certain Oxides with Hydrofluoric Acid Solutions", Russian Journal of Physical Chemistry, 50(4), 1976. No month.
Coble, R. L., "Sintering Crystalline Solids. II. Experimental Test of Diffusion Models in Powder Compacts", Journal of Applied Physics, 32(5), 793-799, 1961. No month.
Haroun, N. A. et al., Chap. 12, "Effects of Additions of MgO, ZnO and NiO on Grain Growth in Dense Alumina", Transactions of the British Ceramic Society, 69, 73-79, 1970 No month.
Genthe, W. et al., "Influence of Chemical Composition on Corrosion of Alumina in Acids and Caustic Solutions", J. Eur. Ceramic Socity, 9, 417-425, 1992 No month.
Bennison, et al, "A History of the Role of MgO in the Sintering of .alpha.-A1.sub.2 O.sub.3 ", Ceramic Transactions, 7, 13-49, 1990 No month.
Roy, S. K. et al., "Solubilities of Magnesia, Titania, and Magnesium Titanate in Aluminum Oxide", Journal of the American Ceramic Society, 5(1), 1-6, 1968 No month.
Cohen, A. et al, "Effect of MgO Dopant Dispersing Method on Density and Microstructure of Alumina Ceramics", Advanceds in Ceramics: Structure and Properties of MgO and Al.sub.2 O.sub.3 Ceramics10, 780-790, 1984 no month.

Affiliated with

Also associated with

Rating

HF-resistant ceramics and use thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with HF-resistant ceramics and use thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and HF-resistant ceramics and use thereof will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1134254