Making Chemically Bonded Phosphate Ceramic

Wagh in chemically bonded phosphate ceramics second edition 2016.

Making chemically bonded phosphate ceramic.

A chemically bonded phosphate ceramic is a type of coating that is used to protect certain types of metals from corrosion. October 19th 2010 reviewed. Wollastonite based chemically bonded phosphate ceramic composites. The monovalent alkali metal phosphate or ammonium hydrogen phosphate and sparsely soluble oxide are both in powder form and combined in a stochiometric molar ratio.

The process of preparing chemically bonded sol gel ceramics comprises phosphating a sol gel derived oxide or hydrated oxide and polymerizing the phosphated product with heat treatment. They host radioactive and hazardous contaminants into their natural phosphate minerals and mimic the way nature has stored them for millions of years. Wagh aluminum phosphate ceramics chemically bonded phosphate ceramics 10 1016 b978 008044505 2 50015 6 121 133 2004. Chemically bonded phosphate ceramics brings together the latest developments in chemically bonded phosphate ceramics cbpcs including several novel ceramics from us federal laboratories such as argonne oak ridge and brookhaven national laboratories as well as russian and ukrainian nuclear institutes.

A chemically bonded phospho silicate ceramic formed by chemically reacting a monovalent alkali metal phosphate or ammonium hydrogen phosphate and a sparsely soluble oxide with a sparsely soluble silicate in an aqueous solution. Phosphate bonds are found in nature as one of the fundamental blocks of dna structure and in bones and their use in the production of cbpcs for various. Phase evolution on heating and mechanical properties cement and concrete. Crossref nora e hipedinger alberto n scian esteban f aglietti magnesia ammonium phosphate bonded cordierite refractory castables.

Making a chemically bonded phosphate ceramic like ceramicrete using. Chemically bonded phosphate ceramics cbpcs are the most natural and hence appropriate materials for immobilization of radioactive and mixed waste streams. By henry colorado clem hiel h. April 9th 2011 published.

Chemically bonded phosphate ceramics cbpcs are abcs in which the acid component is orthophosphoric acid or a soluble orthophosphate and the resulting ceramic is an insoluble orthophosphate. Chemically bonded phosphate ceramics are comprised of a mixture of phosphates water metal oxides and minerals. This invention relates to a novel method of decreasing porosity of ceramics produced by sol gel processing. Cbpcs are synthesized by chemical reactions most of them at.

Mgo 50 grams mono potassium phosphate 40 grams water 35 grams borax 5 grams th. Such combined sol gel chemical bonding process can be used to fabricate dense thick ceramics or.