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- W3067137 abstract "The corrosion resistance of a number of metals, alloys, ceramic materials, and enamel coatings was investigated in mixtures of fused freshly prepared chlorides at 500 to 550/sup 0/C in air. The chlorides NaCl, KCl, and CaCl/sub 2/ of cp and ar grade were dried in air at 200 to 250/sup 0/C for 6 h, remelted at 800/sup 0/C, and fused in given ratios for 3 h; anhydrous commercial MgCl/sub 2/, AlCl/sub 3/, and FeCl/sub 3/, until a homogeneous melt was obtained. The corrosion resistances of the metals and ceramic materials were assessed from the change in weight. The chemical resistance of the enamel coating were determined from the loss of continuity of the coating by means of an IDS flaw detector. The corrosion rate of W, Mo, Ni, Ta, Cr, Zr, NMZhMts (28-1.5-2), KhN4510, N50Kh40Yu10, N60KH40, OKh15N65M16G3, OKh15N65M16V, N65M20V15, N65M19V16, N70M27F, and stainless steels Kh28Yu5, Kh28S2, Kh18N10T, Kh20N18Yu3, Kh25N20S2, and OKh23N28M3D3T in melts of these compositions exceeded 100g/m/sup 2/h. Ceramic of pure oxides, silicon carbide with a nitride binder, and silicified graphite are strongly impregnated by the melt, and may therefore crack with a sudden change in temperature. Cermet coating M1 disintegrated in places. Of the cermic materials tested themore » most stable are basalt ceramic and fluorphlogopite. Enamel coating 6S-12 has a low resistance, the surface became rough; enamel coating 15, Kh19-6, N-14-15, and N14-10 became porous.Enamels 8/2-72, 81A/sub 8/, and 81 are quite unstable in these melts at 500 to 550/sup 0/C. Enamel coatings 143/54-15, 143/54-50, 54, and 122 are the most stable in fused chlorides. These studies showed that none of the metallic materials tested can be used as a structural material in the chloride melts (%) KCl 39, NaCl 7 CaCl/sub 2/ 3.5, MgCl/sub 2/ 2.5, AlCl/sub 3/ 20, and FeCl/sub 3/ 28 and KCL 58-FeCl/sub 3/ 42 at 500 to 550/sup 0/C. Fluorphlogopite, basalt ceramic, and enamels 143/54-15, 143/54-50, 54, and 122 are recommended for pilot plant tests. (RWR)« less" @default.
- W3067137 created "2016-06-24" @default.
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- W3067137 date "1976-09-01" @default.
- W3067137 modified "2023-09-27" @default.
- W3067137 title "Applicability of certain materials and protective coatings in fused chlorides" @default.
- W3067137 hasPublicationYear "1976" @default.
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