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The effect of borate addition on the properties of sintered pulverised fuel ash (PFA) has been investigated. PFA from a major coal-fired power station in the UK has been formed into monolithic ceramic samples using dry powder compaction and sintering. Borax pentahydrate (Na 2 B 4 O 7 ·5H 2 O), anhydrous borax (Na 2 B 4 O 7 ) and boric acid (H...
Engineering ceramics are often difficult to prepare metallographically because of their hardness, wear resistance, and chemical inertness. Two silicon carbides, a silicon nitride and a sialon, are prepared and etched using several different techniques. The most efficient methods are identified.
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