Aluminium nitride

"AlN" redirects here. For other uses, see Aln (disambiguation). Not to be confused with Aluminium nitrate.
Aluminium nitride
Aluminium Nitride powder
Names
Other names
AlN
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.041.931 Edit this at Wikidata
EC Number
  • 246-140-8
13611
RTECS number
  • BD1055000
UNII
  • InChI=1S/Al.N checkY
    Key: PIGFYZPCRLYGLF-UHFFFAOYSA-N checkY
  • InChI=1/Al.N/rAlN/c1-2
    Key: PIGFYZPCRLYGLF-PXKYIXAJAH
  • [AlH2-]1[N+]47[AlH-]2[N+][AlH-]3[N+]8([AlH2-][NH+]([AlH2-]4)[AlH2-]6)[AlH-]4[N+][AlH-]5[N+]6([AlH2-]6)[Al-]78[N+]78[AlH-]([NH+]69)[NH+]5[AlH2-][NH+]4[AlH-]7[NH+]3[AlH2-][NH+]2[AlH-]8[NH+]1[AlH2-]9
  • [AlH2-]1[NH+]([AlH2-]6)[AlH2-][NH+]7[AlH-]2[N+][Al-]3([N+][AlH-]9[N+]5)[N+]18[Al-]45[N+][AlH-]5[NH+]6[Al-]78[N+]78[AlH2-][NH+]5[AlH2-][N+]4([AlH2-][NH+]9[AlH2-]4)[AlH-]7[N+]34[AlH2-][NH+]2[AlH2-]8
Properties
AlN
Molar mass 40.989 g/mol[1]
Appearance white to pale-yellow solid
Density 3.255 g/cm3[1]
Melting point 2,500 °C (4,530 °F; 2,770 K)[6]
hydrolyses (powder), insoluble (monocrystalline)
Solubility insoluble, subject of hydrolysis in water solutions of bases and acids [2]
Band gap 6.015 eV[3][4] (direct)
Electron mobility ~300 cm2/(V·s)
Thermal conductivity 321 W/(m·K)[5]
Structure[7]
Wurtzite
C6v4-P63mc, No. 186, hP4
a = 0.31117 nm, c = 0.49788 nm
2
Tetrahedral
Thermochemistry[8]
30.1 J/(mol·K)
20.2 J/(mol·K)
−318.0 kJ/mol
−287.0 kJ/mol
Hazards
GHS labelling:
GHS07: Exclamation markGHS08: Health hazardGHS09: Environmental hazard
Warning
H315, H319, H335, H373, H411
P260, P261, P264, P271, P280, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P321, P332+P313, P337+P313, P362, P363, P403+P233, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
1
0
0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

Aluminium nitride (AlN) is a solid nitride of aluminium. It has a high thermal conductivity of up to 321 W/(m·K)[5] and is an electrical insulator. Its wurtzite phase (w-AlN) has a band gap of ~6 eV at room temperature and has a potential application in optoelectronics operating at deep ultraviolet frequencies.

  1. ^ a b Haynes, p. 4.45.
  2. ^ Fukumoto, S.; Hookabe, T.; Tsubakino, H. (2010). "Hydrolysis behavior of aluminum nitride in various solutions". J. Mat. Science. 35 (11): 2743–2748. doi:10.1023/A:1004718329003. S2CID 91552821.
  3. ^ Haynes, p. 12.85.
  4. ^ Feneberg, M.; Leute, R. A. R.; Neuschl, B.; Thonke, K.; Bickermann, M. (2010). Phys. Rev. B. 82 (7): 075208. Bibcode:2010PhRvB..82g5208F. doi:10.1103/physrevb.82.075208.{{cite journal}}: CS1 maint: untitled periodical (link)
  5. ^ a b Cheng, Zhe; Koh, Yee Rui; Mamun, Abdullah; Shi, Jingjing; Bai, Tingyu; Huynh, Kenny; Yates, Luke; Liu, Zeyu; Li, Ruiyang; Lee, Eungkyu; Liao, Michael E.; Wang, Yekan; Yu, Hsuan Ming; Kushimoto, Maki; Luo, Tengfei; Goorsky, Mark S.; Hopkins, Patrick E.; Amano, Hiroshi; Khan, Asif; Graham, Samuel (2020). "Experimental observation of high intrinsic thermal conductivity of AlN". Physical Review Materials. 4 (4): 044602. arXiv:1911.01595. Bibcode:2020PhRvM...4d4602C. doi:10.1103/PhysRevMaterials.4.044602. S2CID 207780348. Retrieved 2020-04-03.
  6. ^ Haynes, p. 12.80.
  7. ^ Vandamme, Nobuko S.; Richard, Sarah M.; Winzer, Stephen R. (1989). "Liquid-Phase Sintering of Aluminum Nitride by Europium Oxide Additives". Journal of the American Ceramic Society. 72 (8): 1409–1414. doi:10.1111/j.1151-2916.1989.tb07662.x.
  8. ^ Haynes, p. 5.4.