Difference between revisions of "Boron carbide"
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An extremely hard, black crystalline powder. Boron carbide is used as an [[abrasive]] and as a refractory material. It is also provides increased resistance to chemicals and abrasion when it is added to ceramics and metal alloys. | An extremely hard, black crystalline powder. Boron carbide is used as an [[abrasive]] and as a refractory material. It is also provides increased resistance to chemicals and abrasion when it is added to ceramics and metal alloys. | ||
| − | == | + | == Physical and Chemical Properties == |
Soluble in fused alkali. Insoluble in water, acids. | Soluble in fused alkali. Insoluble in water, acids. | ||
| Line 16: | Line 16: | ||
|- | |- | ||
! scope="row"| Melting Point | ! scope="row"| Melting Point | ||
| − | | 2350 | + | | 2350 C |
|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 2.6 | + | | 2.6 g/ml |
|- | |- | ||
! scope="row"| Boiling Point | ! scope="row"| Boiling Point | ||
| − | | 3500 | + | | 3500 C |
|} | |} | ||
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[[media:download_file_180.pdf|Properties of Common Abrasives]] | [[media:download_file_180.pdf|Properties of Common Abrasives]] | ||
| − | + | ==Resources and Citations== | |
| − | |||
| − | == | ||
* G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 111 | * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971 Comment: p. 111 | ||
Latest revision as of 07:35, 10 May 2022
Description
An extremely hard, black crystalline powder. Boron carbide is used as an Abrasive and as a refractory material. It is also provides increased resistance to chemicals and abrasion when it is added to ceramics and metal alloys.
Physical and Chemical Properties
Soluble in fused alkali. Insoluble in water, acids.
| Composition | B4C |
|---|---|
| Mohs Hardness | 9.0 |
| Melting Point | 2350 C |
| Density | 2.6 g/ml |
| Boiling Point | 3500 C |
Comparisons
Properties of Common Abrasives
Resources and Citations
- G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 111
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 1374