Fusible alloy 1781347 205567270 2008-04-14T15:26:00Z 69.233.202.125 cleanup A '''fusible alloy''', usually [[eutectic]] [[alloy]] is capable of being [[heat of fusion|fused]], as well as being liquefied by heat. Sometimes the term "fusible alloy" is used to describe alloys with a melting point below 150 °C. Fusible alloys in this sense are used for [[solder]]. Melted fusible alloys can be used as [[coolant]]s as they are stable under heating and can give much higher thermal conductivity than most other coolants; particularly with alloys made with a high thermal conductivity metal such as [[indium]] or [[sodium]]. Metals with low neutron cross-section are used for cooling nuclear reactors. Fusible alloys are usually alloys of the relatively low melting point metals such as [[gallium]], [[indium]], [[bismuth]], [[tin]], [[lead]], and [[cadmium]]. [[Sodium]] and [[potassium]] are also used but must be kept well away from air and water. Some reasonably well-known fusible alloys are [[Wood's metal]], [[Field's metal]], [[Rose metal]], [[Galinstan]], [[NaK]]. ==Fusible alloy melting points== {|class="wikitable" !align=center|Composition !align=center|°C !align=center|Name |- |Cs 77.0, K 23.0||−48|| |- |Hg 100||−39|| |- |Ga 68.5, In 21.5, Sn 10||−19|| [[Galinstan]] |- |K 78.0, Na 22.0||−11|| [[NaK]] |- |Ga 62.5, In 21.5, Sn 16.0||10.7|| |- |Ga 69.8, In 17.6, Sn 12.5||10.8|| |- |Ga 100||30|| |- |Bi 40.63, Pb 22.1, In 18.1, Sn 10.65, Cd 8.2||46.5|| |- |Bi 32.5, In 51.0, Sn 16.5||60.5|| [[Field's metal]] |- |Bi 50.0, Pb 25.0, Sn 12.5, Cd 12.5||70|| [[Wood's metal]] |- |Bi 50.0, Pb 31.2, Sn 18.8||97|| [[Newton's metal]] |- |Bi 50.0, Pb 28.0, Sn 22.0||109|| [[Rose's metal]] |- |Sn 63.0, Pb 37.0||183|| Eutectic [[solder]] |- |Sn 92.0, Zn 8.0||199|| [[Tin foil]] |} ==References== *Weast, R.C., "CRC Handbook of Chemistry and Physics", 55th ed, CRC Press, Cleveland, 1974, p. F-22 ==External links== *[http://www.harpellassociates.com/a/a-fusible.htm Fusible (Low Temp) Alloys] *Making your own low-melting point eutectic: ''[http://scitoys.com/scitoys/scitoys/thermo/thermo4.html Science Toys: A metal that melts in hot water]'' [[Category:Fusible alloys| ]] [[Category:Coolants]] {{alloy-stub}} [[ru:Легкоплавкие сплавы]]