Reference

Wear-resistant multicomponent diffusion coatings on chromium steels

Wear-resistant multicomponent diffusion coatings on chromium steels. Zemskov, G. V.; Kogan, R. L.; Shevchenko, I. M.; Koss, E. V.; Khmelevskaya, M. E. (Odess. Politekh. Inst., Odessa, USSR). Izv. Vyssh. Uchebn. Zaved., Chern. Metall., (1), 153-6 (Russian) 1978. CODEN: IVUMAX. ISSN: 0368-0797. DOCUMENT TYPE: Journal CA Section: 55 (Ferrous Metals and Alloys) The wear resistance of stainless steel 2Kh13 [37241-55-7] was improved by coating with Cr or Ti borides in a 2-stage process comprising a consecutive satn. of the steel with B and Cr or Ti. A preferred boronizing activator was NH4BF4 [13826-83-0], which provided sufficient microhardness of the diffusion layer contg. FeB and Fe2B zones. The chromizing or Ti cementation was carried out at 1050° for 5 h in a mixt. of Cr 50, Al2O3 45, NH4Cl 5% or Ti 75, Al2O3 20, NH4Cl 5%, resp. The wear resistance of boronized-chromized and TiB2-coated specimens was 3 and 2 times higher, resp., in comparison with the boronized ones without chromizing or Ti cementation.

Improving fungal resistance of the epoxy polymer KD-4 by fungicidal additives

Improving fungal resistance of the epoxy polymer KD-4 by fungicidal additives. Smirnov, V. F.; Anisimov, A. 30615-19-1 and 94-82-6 are also occured in this study. A.; Semicheva, A. S. (Gorki State Univ., Gorki, USSR). Prikl. Biokhim. Mikrobiol., 13(1), 138-41 (Russian) 1977. CODEN: PBMIAK. DOCUMENT TYPE: Journal CA Section: 36 (Plastics Manufacture and Processing) The resistance to fungi of KD 4 [62340-49-2], an epoxy resin, is increased by addn. of trilan [51888-98-3], AK-Kh(a monochloroacetoamino deriv. of colophony), Cuprozan [8066-21-5], NaF [7681-49-4], NH4BF4 [13826-83-0], CuSO4 [7758-98-7], 2,4-dichlorophenoxybutyric acid [94-82-6], Na trichloroacetate (I) [650-51-1], Na 2,6-dichlorophenolate [29726-01-0], Granosan (II) [107-27-7] and merthiolate [54-64-8] as fungicides. Addn. of 3% I caused surface roughness and addn. of 6% II caused abrupt changes in the dielec. properties of the resin. .