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1) "Graphite" -- As to graphite crucibles graphite
Pronunciation: 'gra-"fIt
Function: noun
Etymology: German Graphit, from Greek graphein to write
1 : a soft black lustrous form of carbon that conducts electricity and is used in lead pencils and electrolytic anodes, as a lubricant, and as a moderator in nuclear reactors
2 : a composite material in which carbon fibers are the reinforcing material
- graphitic /gra-'fi-tik/ adjective Pronunciation Symbols
| Graphite |
| | General | | Category | Native mineral | | Chemical formula | Carbon, C | | Identification | | Color | Steel black, to gray | | Crystal habit | Tabular, six-sided foliated masses, granular to compacted masses | | Crystal system | Hexagonal (6/m 2/m 2/m) | | Cleavage | Perfect in one direction | | Fracture | Flaky, otherwise rough when not on cleavage | | Mohs Scale hardness | 1 - 2 | | Luster | metallic, earthy | | Refractive index | Opaque | | Pleochroism | None | | Streak | Black | | Density | 2.09–2.23 g/cm³ | | Solubility | Molten Ni | Graphite (named by Abraham Gottlob Werner in 1789 from the Greek γραφειν (graphein): "to draw/write", for its use in pencils) is one of the allotropes of carbon. Like the diamond, graphite is an electrical conductor. Graphite can be used, for instance, as the material in the electrodes of an electrical arc lamp. Graphite holds the distinction of being the most stable form of solid carbon ever discovered. It may be considered to be the highest grade of coal, just above anthracite, although it is not normally used as fuel because it is hard to ignite. - 1 Occurrence
- 2 Structure
- 3 Detailed properties
- 4 Uses
- 5 Graphite milling
- 6 References
- 7 Me..."
2) "Crucibles" -- As to graphite crucibles crucible
Pronunciation: 'krü-s&-b&l
Function: noun
Etymology: Middle English corusible, from Medieval Latin crucibulum earthen pot for melting metals
1 : a vessel of a very refractory material (as porcelain) used for melting and calcining a substance that requires a high degree of heat
2 : a severe test
3 : a place or situation in which concentrated forces interact to cause or influence change or development <conditioned by having grown up within the crucible of Chinatown -- Tom Wolfe> Pronunciation Symbols
Crucibles used in Czochralski method A crucible is a cup-shaped piece of laboratory equipment used to contain chemical compounds when heating them to very high temperatures. The receptacle is usually made of porcelain or an inert metal. - 1 Crucible materials and description
- 2 Use in chemical analysis
- 2.1 Use in Ash Content Determination
- 3 External links
| One of the earliest uses of platinum was to make crucibles. More recently, metals such as nickel and zirconium have been used. Crucibles are commonly used with a high temperature-resistant crucible cover (or lid) made of a similar material. The lids are typically loose-fitting to allow gases to escape during heating of a sample inside. Crucibles and their lids can come in high form and low form shapes (see Ext. Link 2 below) and in various sizes, but rather small 10–15 ml size porcelain crucibles are commonly used for gravimetric chemical analysis. These small size crucibles and their covers made of porcelain are quite cheap when sold in quantity to laboratories and the crucibles are sometimes disposed of after use in precise quantitative chemical analysis. There is usually a large mark-up when they are sold individually in hobby shops. Crucible after being used Melting gold in a graphite crucible Several graphite crucibles of different sizes A crucible is also a container in which metals are melted, usually for temperatures above 500 °C. These crucibles are usually made of graphite with clay as a binder. These crucibles are very durable and resist temperatures to over 1600 °C. A crucible is placed into a furnace and, after the melting, the liquid metal is taken out of the furnace and poured into the mold. Some furnaces (usually electric or induction) have an embedded crucible and are tilted when the metal is poured out. The term crucible is often used for unrelated activities..."
Further Data On Term for graphite crucibles
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Regularly Occuring Typos with graphite crucibles include: rgaphite garphite grpahite grahpite grapihte graphtie graphiet raphite gaphite grphite grahite grapite graphte graphie graphit traphite fraphite vraphite braphite hraphite jraphite geaphite gdaphite gfaphite gtaphite grqphite grsphite grzphite grephite griphite grophite gruphite graohite grapyite grapgite grapjite grapbite grapnite graphute graphkte graphote graphate graphete graphute graphire graphife graphige graphiye graphitw graphits graphitd graphitr graphita graphiti graphito graphitu rcucibles curcibles crcuibles cruicbles crucbiles crucilbes crucibels cruciblse rucibles cucibles crcibles cruibles crucbles cruciles crucibes crucibls crucible xrucibles drucibles frucibles vrucibles krucibles ceucibles cducibles cfucibles ctucibles crycibles crjcibles cricibles cracibles crecibles crocibles cruxibles crudibles crufibles cruvibles crukibles crucubles cruckbles crucobles crucables crucebles crucubles crucivles crucinles crucigles crucihles crucibkes cruciboes crucibpes cruciblws cruciblss cruciblds cruciblrs cruciblas cruciblis cruciblos cruciblus cruciblea cruciblew crucibled cruciblex cruciblez
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