Melting enamel

The (Ti02) films are also appHed to glass or vitreous enamel for decorative purposes. Thin films enhance brilliance thicker films impart a silver-gray luster. Milk glass can be produced by mixing the titanate with a low melting enamel, which skaters when the coatkig is baked (424). 

Lithium Borates. Lithium metaborate [13453-69-5], LLBO2 2H20, is prepared from reaction of lithium hydroxide and boric acid. It is used as the fluxing agent for the matrix for x-ray fluorescence analytical techniques and in specialty glasses and enamels. The anhydrous salt melts at 847°C. 

Porcelain enameling requires the use of frits and melting temperatures of 550 °C or below. Enamels are appHed over chemical conversion coatings that are compatible with the frit. AHoy selection is important to obtain good spall resistance. Alloys 1100, 3003, and 6061 are employed most extensively among wrought products and alloy 356 for castings. 

BaCl2 is used in heat treating baths because of the eutectic mixtures it readily forms with other chlorides. The melting points of some eutectic mixtures are BaCl2 KCl, 672—680°C BaCl2 N Cl, 39 mol % BaCl2) 654°C 631°C. BaCl2 is so used to set up porcelain enamels for sheet... 

The PAI resin is utilized for small, simple parts. Because of its stiff melt flow, the resin is available in compression moldable powder. Grades include neat, filled, and glass-reinforced resins it is also available in solution for use as an enamel. Because of high prices ( 33—44/kg) the market is limited, estimated at 150—300 tons for the mol ding resin. Resins competing with PAI include PEI, polyethersulfones, and thermoset resins. 

Schmelz, m. enamel, glaze fusion, melting, melt (Zinc) blue powder. 

Schmelz-lSsung, /. molten solution, melt, -malerei, /. enamel painting, -mittel, n. flux, -ofen, m. melting furnace smelting fmnace. -dl, n. = Schmalzdl. 

Schmelz-verfahren, n. melting process, fusion process smelting process, -warme, /. heat of fusion, -wasser, n. water from melting ice or snow, -werk, n. smeltery foundry enameled work. 

Enamel Preparation. Soluble oligoester diols (Ib-ld, 2a-2g, and 3a-3g), HMMM, methyl isobutyl ketone (MIBK) and -toluenesulfonic acid ( -TSA) were thoroughly mixed in a 70/30/30/0.3 wt. ratio. The solution was cast on panels and baked at 150" for 30 min. Less soluble LC diols le-lg were melted, dispersed in MIBK, mixed with HMMM and -TSA in the above proportions and immediately cast as films. Oligoester diol la was too insoluble for enamel formation. 

Glazes are thin, transparent coatings (colored or colorless) fused on ceramic materials. Vitreous enamels are thin, normally opaque or semiopaque, colored coatings fused on metals, glasses, or ceramic materials. Both are special glasses but can contain little silica. They have typically low melting points and are often not easily mixed in with more traditional glasses. 

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