Detail of "12006-79-0"

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A study on the diffusion kinetics of borides on boronized Cr-based steels

All Rights Reserved. Several substances are used for example 12006-84-7 and 12741-56-9 which are their cas registry numbers. A study on the diffusion kinetics of borides on boronized Cr-based steels. Taktak, Sukru (Technical Education Faculty, Department of Metal Education, Afyon Kocatepe University, Afyon, Turk.). Journal of Materials Science, 41(22), 7590-7596 (English) 2006 Springer. CODEN: JMTSAS. ISSN: 0022-2461. DOCUMENT TYPE: Journal CA Section: 55 (Ferrous Metals and Alloys) The kinetics of borides formed on AISI H13 hot work tool steel and AISI 304 stainless steel have been investigated. Boronizing was carried out in a slurry salt bath consisting of borax, boric acid and ferrosilicon at 1073-1223 K for 3, 5 and 7 h. X-ray diffraction anal. of the boride layers on the steel surface revealed various peaks of FeB, Fe2B, CrB and Ni3B. Metallog. studies revealed that the boride layer has a flat and smooth morphol. in AISI 304 while H13 steel was a ragged morphol. Depending on temp. and layer thickness, the activation energies of boride formation in AISI 304 and H13 steels were 253.35 and 244.37 kJ/mol, resp. Keywords boride formation diffusion kinetics boronizing chromium contg steel Index Entries Boronizing Diffusion diffusion kinetics of boride formation in boronized Cr-contg. steels 11109-50-5 12741-56-9 12006-79-0 12006-84-7 12006-85-8 12007-02-2 diffusion kinetics of boride formation in boronized Cr-contg. steels .

Microstructural investigations of a nickel-based repair coating processed by liquid-phase diffusion sintering

Microstructural investigations of a nickel-based repair coating processed by liquid-phase diffusion sintering. Jahnke, B.; Demny, J. (Res. Lab., Brown, Boveri Cie A.-G., Heidelberg 6900, Fed. Rep. Ger.). Thin Solid Films, 110(3), 225-35 (English) 1983. CODEN: THSFAP. ISSN: 0040-6090. DOCUMENT TYPE: Journal CA Section: 56 (Nonferrous Metals and Alloys) The microstructure of samples processed by liq.-phase diffusion sintering of prealloyed atomized and mixed powders was investigated by electron microprobe anal., x-ray diffraction, and metallog. Repair castings were obtained from powders based on the cast superalloys NIM-75 [11068-69-2], IN-939 [59316-28-8], and IN-738LC [62200-19-5], and braze materials based on the systems Ni-Cr-B as Nicrobraze 150 [37302-35-5] or Ni-Cr-Fe-Si-B. The structure consists of a dispersion of borides and/or silicides in the alloy matrix, and eutectic grain boundary pptn. 12006-79-0 and 37302-35-5 are cas registry numbers of chemicals which are used as reagents here. depending on thermal cycle and compn. The porosity does not exceed that of the cast IN-738LC and IN-939. The corrosion resistance to salt melts is only sufficient in blends with a high Cr content, as boride pptn. caused Cr depletion. Liq.-phase diffusion sintering meets the repair requirements of crack and erosion damage, by filling and sintering with a braze mix consisting of a superalloy and a braze alloy contg. a m.p. depressant. .