Glazing effect

In summary, we can conclude that very small amounts of NazO will cause liquid to form in a fireclay refractory above 1063°C. If the liquid is confined to the surface of the refractory, a glazing effect will prevent serious damage to the refractory. If Na20 concentrations are significant, even a fraction of 1 wt %, a fireclay refractory will be prone to erosion at high temperatures and serious thermal shock at low temperatures. Fireclay refractories would seem to have poor-to-moderate resistance to Na20. 

Mercerization was discovered by John Mercer in England and the process is named after him mercerizing. The process of alkaline treatment of cotton was patented in 1850. Later Horace Lowe in England found that the glazing effect became even more pronounced when cold caustic soda acted on cotton under tension. He discovered the actual mercerizing process and applied for its patent in 1890. 

Peach Bloom. A glaze effect on pottery produced by the Chinese and characterized by its soft pink colour with patches of deeper red. It is achieved by the addition of copper oxide to a high-alkali glaze but requires very careful control of the kiln atmosphere the bloom results from incipient devitrification of the glaze surface. Peacock Blue. A ceramic colour made from a batch such as 33% Cobalt oxide, 7% standard black (q.v.), 45% China Stone, 15% Flint. 

For the successful fabrication of Type A-F glass-ceramics (Table 2-1), Echeverrfa (1992) developed a process in which a self-glazing effect is... 

Color Matching. Color matching is a process in which a technician prepares a formulation, ie, a mixture of pigments in a desired medium, that has the color effects desired by the customer. A good color match in one medium, eg, plastic, is not always a good match in another medium, eg, ceramic glaze. Thus the medium as well as the processing conditions have to be identical to those used by the customer. 

Atmospheric Toxicity. The only known atmospheric toxicity effect of phthalates is the phytotoxicity arising from the use of DBP plasticized glazing bars in greenhouses. However, the higher phthalates such as DEHP are not phytotoxic. General atmospheric concentrations of phthalates are extremely low and it is concluded that they pose no risk to plants or animals. 

Cadmium acetate is a colorant for glass and textiles, a glaze for ceramics where it produces iridescent effects, a starting material for preparation of the cadmium haUdes, and is an alternative to the cyanide bath for cadmium electroplating. In 1991, cadmium acetate dihydrate sold for 59.50/kg in 2 kg lots of reagent-grade material. 

Thus, someone working near a window will receive hot solar radiation through the window in summer and cold radiation from the cold window surface in winter, causing uncomfortable radiant asymmetry even if the room temperature is perfect for personnel working away from the window. Ventilation will not be the correct solution for this problem - sun shading and double-glazing would be more effective. 

As stoneware and porcelain can be given a glazed finish on both interior and exterior surfaces, articles made from these materials can be very easily cleaned, even after years of use. The glaze also has an effect on the strength of the ware, increasing it by up to 20%, but certain types of body are difficult to glaze satisfactorily. 

Fish which is frozen in air blast will often be dipped into clean water afterwards, resulting in a layer of ice on the surface. This glazing process protects the fish from the effects of dehydration in subsequent storage. 

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