scholarly journals Characterization of aluminum–aluminum nitride coatings sputter deposited using the pulsed gas process

1982 ◽  
Vol 20 (3) ◽  
pp. 462-465 ◽  
Author(s):  
R. W. Springer ◽  
C. D. Hosford
Keyword(s):  
Aluminum Nitride ◽  
Nitride Coatings ◽  
Sputter Deposited

Deposition and characterization of titanium aluminum nitride coatings prepared by RF magnetron sputtering

2015 ◽  
Vol 350 ◽  
pp. 6-9 ◽  
Author(s):  
Amina Zouina Ait-Djafer ◽  
Nadia Saoula ◽  
Hamid Aknouche ◽  
Bendiba Guedouar ◽  
Noureddine Madaoui
Keyword(s):  
Aluminum Nitride ◽  
Magnetron Sputtering ◽  
Rf Magnetron Sputtering ◽  
Titanium Aluminum ◽  
Nitride Coatings ◽  
Titanium Aluminum Nitride

Construction of plastic contact deformation maps on ceramics: a case study on aluminum nitride

1996 ◽  
Vol 54 ◽  
pp. 636-637
Author(s):  
D. L. Callahan
Keyword(s):  
Plastic Deformation ◽  
Aluminum Nitride ◽  
Mechanical Response ◽  
Three Dimensional ◽  
Bright Field Image ◽  
Perfectly Plastic ◽  
Contrast Analysis ◽  
Deformation Patterns

Modern polishing, precision machining and microindentation techniques allow the processing and mechanical characterization of ceramics at nanometric scales and within entirely plastic deformation regimes. The mechanical response of most ceramics to such highly constrained contact is not predictable from macroscopic properties and the microstructural deformation patterns have proven difficult to characterize by the application of any individual technique. In this study, TEM techniques of contrast analysis and CBED are combined with stereographic analysis to construct a three-dimensional microstructure deformation map of the surface of a perfectly plastic microindentation on macroscopically brittle aluminum nitride.The bright field image in Figure 1 shows a lg Vickers microindentation contained within a single AlN grain far from any boundaries. High densities of dislocations are evident, particularly near facet edges but are not individually resolvable. The prominent bend contours also indicate the severity of plastic deformation. Figure 2 is a selected area diffraction pattern covering the entire indentation area.

CBED analysis of impurity distributions in AlN

1990 ◽  
Vol 48 (4) ◽  
pp. 214-215
Author(s):  
Daniel Callahan ◽  
G. Thomas
Keyword(s):  
Aluminum Nitride ◽  
Bulk Material ◽  
Strong Dependence ◽  
Lattice Parameter ◽  
Promising Technique ◽  
Nitride Ceramics ◽  
Surface Phases ◽  
Convergent Beam ◽  
Oxygen Impurities

Oxygen impurities may significantly influence the properties of nitride ceramics with a strong dependence on the microstructural distribution of the impurity. For example, amorphous oxygen-rich grain boundary phases are well-known to cause high-temperature mechanical strength degradation in silicon nitride whereas solutionized oxygen is known to decrease the thermal conductivity of aluminum nitride. Microanalytical characterization of these impurities by spectral methods in the AEM is complicated by reactions which form oxygen-rich surface phases not representative of the bulk material. Furthermore, the impurity concentrations found in higher quality ceramics may be too low to measure by EDS or PEELS. Consequently an alternate method for the characterization of impurities in these ceramics has been investigated.Convergent beam electron diffraction (CBED) is a promising technique for the study of impurity distributions in aluminum nitride ceramics. Oxygen is known to enter into stoichiometric solutions with AIN with a consequent decrease in lattice parameter.

scholarly journals Mapping the Structure of Oxygen-Doped Wurtzite Aluminum Nitride Coatings from Ab Initio Random Structure Search and Experiments

2021 ◽  
Vol 13 (4) ◽  
pp. 5762-5771
Author(s):  
Piero Gasparotto ◽  
Maria Fischer ◽  
Daniele Scopece ◽  
Maciej O. Liedke ◽  
Maik Butterling ◽  
...  
Keyword(s):  
Aluminum Nitride ◽  
Ab Initio ◽  
Random Structure ◽  
Structure Search ◽  
Nitride Coatings
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