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molten salt

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080409
EISBN: 978-1-62708-304-1
... Abstract Containment materials used in power generating applications are subject to molten salt corrosion. This chapter reviews the data relevant to corrosion problems in molten salt environments. It describes the corrosion behavior of steel, aluminum, nickel, and titanium alloys in molten...
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Published: 01 November 2011
Fig. 7.8 Principal types of furnaces used for molten-salt-bath dip brazing applications: (a) and (b) externally heated; (c) and (d) internally heated. Source: Ref 7.8 More
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Published: 01 November 2007
Fig. 15.10 Corrosion of Ni-Cr-Fe-Mo alloy in a molten CaCl 2 -NaCl salt bath at 570 °C (1050 °F) for 6 months. (a) Little corrosion at the area not cold worked (away from the sheared edge). (b) Intergranular attack at the cold worked area (specimen sheared edge). Source: Ref 14 More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140117
EISBN: 978-1-62708-264-8
.... It also discusses the use of various quenchants, including oil, polymer, and molten salt, and explains how to measure and compare their performance using a standard (ISO 9950) test. austempering cooling performance martempering molten salt bath quenchants oil quenchants polymer quenchants...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120085
EISBN: 978-1-62708-269-3
... of scale and how it can be removed via belt grinding, abrasive blasting, and molten salt descaling baths. It also discusses the role of acid pickling, barrel finishing, polishing, and buffing as well as the use of chemical conversion coatings and protective platings. barrel finishing chemical...
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Published: 01 December 2003
Fig. 19 Microstructures of various ferritic materials that have undergone salt bath nitrocarburizing. All etched in 3% nital. All 500×. Courtesy of Kolene Corp. (a) Ferritic nodular iron; 90 min at 580 °C (1075 °F), oxidizing molten salt quench. (b) Low-carbon steel; 90 min at 580 °C (1075 °F More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900053
EISBN: 978-1-62708-350-8
... source. When heat is applied from either an internal or external source, the salt melts and liberates nitrogen to the steel for diffusion. When a steel workpiece is introduced into the salt and heated up to a temperature in the molten salt, similar reactions begin to occur as in gas nitriding...
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Published: 01 December 2003
Fig. 2 Ferritic nodular iron, salt bath nitrided 90 min at 580 °C (1075 °F), oxidizing molten salt quenched. 500×, nital etch. Courtesy of Kolene Corp. More
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Published: 01 January 1998
Fig. 6-15 Fluidized-bed heating compared with conventional immersion heating (molten salt and molten lead baths) and convection heating for 16 mm (⅝ in.) diam steel bars. Source: Ref 7 More
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Published: 01 December 2003
Fig. 3 SAE 5115 (UNS G51150), chromium-manganese low-carbon steel, salt bath nitrided 90 min at 580 °C (1075 °F), oxidizing molten salt quenched. 500×, nital etch. Courtesy of Kolene Corp. More
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Published: 01 December 1995
Fig. 24-50 Correlation curves for identical cooling times in end-quench hardenability specimens and round bars quenched in hot salt, oil, and water. Water was at 75 °F (24 °C); mineral oil [Saybolt universal viscosity at 100 °F, (38 °C), 79 sec], at 120 °F (49 °C); molten salt, at 400 °F (204 More
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Published: 01 November 2007
Fig. 10.61 Tube wastage as a function of tube metal temperature after 125,000 h, with low wastage rate by oxidation and accelerated wastage rates by molten salt corrosion. Source: Ref 15 More
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Published: 01 November 2007
Fig. 12.2 Cooling curve at the surface and center of a martempered bar of 5140 steel superimposed on the continuous transformation curve. Solid curves are molten salt quench baths; dashed curves are hot oil quench baths More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900201
EISBN: 978-1-62708-350-8
... ). Melonite Process The Melonite process, also known as Meli 1, uses a molten salt bath of a special composition. It provides a wear- and scuff-resistant surface on steels, sintered irons, cast irons, and similar materials. Treated parts exhibit excellent wear and corrosion resistance and good sliding...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2024
DOI: 10.31399/asm.tb.phtpp.t59380017
EISBN: 978-1-62708-456-7
... of heterogeneity in the bed: bed geometry; gas flow rate; type of gas distributor; and internal vessel features such as screens, baffles, and heat exchangers. One of the most important characteristics of fluidized beds is high-efficiency heat transfer, which is comparable to that of salt-bath equipment. Molten...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440055
EISBN: 978-1-62708-262-4
... is the immersed electrode salt bath or a fluidized bed. While all three modes of heating are utilized in a molten salt, molten metal bath, or a fluidized bed, conduction plays an important role because the hot medium is in direct contact with the work-metal surfaces. Convection Convection involves...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.pnfn.t65900193
EISBN: 978-1-62708-350-8
.... The action of the molten salt at the process temperature also caused slight surface porosity on the treated steel. This allowed the surface pores to become minute reservoirs, retaining lubricant on the immediate surface. The net result was that the treated component resisted scuffing and exhibited...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 1998
DOI: 10.31399/asm.tb.ts5.t65900109
EISBN: 978-1-62708-358-4
... product that fails to meet tool life expectations and does not justify its high initial expense. Furnaces for heat treatment of tool steels include ceramic-lined salt bath furnaces, vacuum furnaces, controlled-atmosphere furnaces, and fluidized-bed furnaces. Salt Bath Furnaces Molten salts...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410487
EISBN: 978-1-62708-265-5
... temperature. Martempering or interrupted quenching is a hardening treatment that consists of quenching to a temperature just above the M s temperature of a steel, usually by quenching into a molten salt bath, holding for a time sufficient to equalize temperature through the part, and then air cooling...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440141
EISBN: 978-1-62708-262-4
... explanation of this process is given in Ref 7 . Liquid Carburizing The term “liquid carburizing” should not be confused with drip carburizing. Liquid carburizing is a method of case hardening ferrous metal parts by holding them above their transformation temperature in a molten salt bath. The salt...