what are the forming and shaping methods of graphite and also fused quartz powder?
On (bulk) graphite conformation/shaping ― not by machining; cf.: Hugh O. Pierson, Handbook of Carbon, Graphite, Diamond and Fullerenes ─ Properties, Processing and Applications, Noyes Publications, New Jersey, 1994, Section 5: "Molded graphite: Processing, properties, and applications".
You can find a few papers on the conformation of fused quartz by slip-casting and sintering:
Article Quartz products made by slip casting
Article The slip casting rate for quartz ceramics
Article Some features of slip casting quartz glass ceramics
Dear sir Carlos,
thanks for your answer but in the case of fused silica someone in researchgate has told me :( If you take pure crystalline powder of SiO2 (ground quartz sand), it will not sintered at all at any temperature (up to 1700°C). Ground quartz glass powder (amorphous SiO2) can be sintered, but will not give a dense product at a sintering temperature of up to 1100°C. If you raise the sintering temperature above 1100°C, then cristobalite will crystallize and the product will crumble into pieces )
based on his statment i cant produce objects of fused quartz by slip casting or gel casting. what do you think?
Maybe you could try a binder
https://www.researchgate.net/publication/265232154_PRODUCTION_OF_FUSED_SILICA_CORES_USING_POWDER_INJECTION_MOULDING_TECHNIQUES
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