Laser-glazing

The so-called vitreons metals , amorphous alloys or metallic glasses with disordered structures can be obtained by extremely rapid chilling of molten mixtures of one or more metals with B, C, Si, or P In some cases, they may be obtained by ion sputtering, laser glazing or electrodeposition (Section 12.7). 

Laser glazing A method of rapidly melting and cooling a surface or a film on a surface. Used to densify and smooth the surface and to enhance interdiffusion and reaction. 

Use of inductively coupled plasma-mass spectrometry (1CP-MS) coupled to a laser-ablation sample introduction system (LA-ICP-MS) as a minimally destructive method for chemical characterization of archaeological materials has gained favor during the past few years. Although still a relatively new analytical technique in archaeology, LA-ICP-MS has been demonstrated to be a productive avenue of research for chemical characterization of obsidian, chert, pottery, painted and glazed surfaces, and human bone and teeth. Archaeological applications of LA-ICP-MS and comparisons with other analytical methods are described. 

The compositions of the ceramic glazes were examined using laser-ablation inductively coupled-mass spectroscopy (LA-ICP-MS) at the University of Missouri Research Reactor (MURR). LA-ICP-MS is a surface analysis technique requiring little sample preparation. Because of its small spot size, areas of weathered glaze could be avoided during analysis (24). 

Analysis of Historic Latter-day Saint Pottery Glazes by Laser Ablation-Inductively Coupled Plasma-Mass... 

Nevertheless, ICP-MS has proven to be an integral analytical technique for the analysis of glaze recipes when coupled with laser ablation (LA-ICP-MS) 12, 18-20). Because the laser only ablates the surface of ceramics, data is generated for glazes and paints alone. This allows the researcher to focus on various glaze and paint colors on a single ceramic surface, which would not be possible using traditional bulk analytical techniques such as INAA and MD-ICP-MS. 

Figure 2. Glazed surface that has been ablated with the laser for ICP-MS...

Neodymium 60 Nd Electronics, steel manufacture, glazes and coloured glass (including didymium glass), lasers, magnets, petroleum cracking catalysts, misch metal ... 

Use Praseodymium salts, ingredient of mischmetal, core material for carbon arcs, colorant in glazes and glasses, catalyst, phosphors, lasers. 

IR absorbers and reflectors are used to limit the heat development in rooms (e.g., in greenhouses) and are incorporated in agricultural films or in glazing. Typical materials range from kaolin (aluminum silicate) or other silicates and hydrotalcites [68] in agricultural films to dyes (e.g., phthalocyanines or anthraquinones). Furthermore, dyes with near-IR absorption are added to enhance laser welding of polymers. 

The distribution of the conductive particles and the contact between them also determines the resistance of the deposited film. Final resistance values are obtained either by sand blasting, where the thickness of the film is reduced, or by laser trimming, to increase the effective length of the resistor. These procedures would be performed after the resistor has been fired, but before the application of the protective glaze coating. 

Hazardous Decomp. Prods. Sulfuryl and thionyl fluorides heated to decomp., emits highly toxic fumes of F and SOx Uses Dielectric insulating medium for high-voltage elec, and electronic equip. as tracer gas for ventilation measurements in occupied spaces lasers protective atmosphere for casting of magnesium alloys inert filler gas (multiply-glazed windows)... 

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