Base materials with high potential: Difference between revisions
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== Best of the best == | == Best of the best == | ||
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* [[rutile]] | * [[rutile]] | ||
* [[stishovite]] - metastable SiO<sub>2</sub> polymorph - rutile structure & very hard and dense | * [[stishovite]] - metastable SiO<sub>2</sub> polymorph - rutile structure & very hard and dense | ||
* [[Neo-polymorph]]s of the above | |||
== Simple salt structures == | == Simple salt structures == | ||
Revision as of 22:27, 12 April 2021
Best of the best
- diamond and its polymorphs including hexagonal diamond aka lonsdaleite
- moissanite - SiC - high heat resistance
- stishovite and Seifertite - metastable ultrahard and dense SiO2 polymorphs
Simple rutile structure & hard
- rutile
- stishovite - metastable SiO2 polymorph - rutile structure & very hard and dense
- Neo-polymorphs of the above
Simple salt structures
- Periclase
- Some transition metal monoxides
Con: low crystal structure symmetry
- leukosapphire - very hard
- quartz
Con: Rather soft materials
- Calcite and aragonite