Corundum Hexagonal Aluminium oxide α-Al2O3 >350 3.98 1.28 Table B.3.2. γ-Al2O3 alumina properties PropertyValue Melting point 2054 ± 6°C Boiling point 3530°C Expansion coefficient at 25°C 7,1.10−6 K Thermal conductivity at 25°C 0.46 J.cm−1.s−1.K−1 Specific hea...
Noun1.photographic film- photographic material consisting of a base of celluloid covered with a photographic emulsion; used to make negatives or transparencies film footage- film that has been shot; "they had stock footage of lightning, tornados, and hurricanes"; "he edited the news footage" ...
The temperature dependence of the resistances of thin films sputtered from three commercially available aluminium alloys (5052, 5086, 5456) has been measured in the temperature range 1.5–4.2 K. The 5052-alloy films had a positive temperature coefficient of resistance (TCR) throughout this ...
To study the performance of pure aluminium (Al) oxide film produced by high-speed wire electrical discharge machining (WEDM-HS), some characterisation indices including phase composition, surface morphology characteristics, roughness, friction coefficient, oxide content and thickness of ...
Coefficient Of Static - ASTM-D-1894 0.35 0.35 0.35 Friction Dynamic - ASTM-D-1894 0.3 0.3 0.3 Wetting Tension Dyne/cm ASTM-D-2578 38 38 38 Tear Strength g/micron ASTM-D-2578 5.2 5.4 5.5 Optical Haze % ASTM-D-1003 3.6 4.2 4.6...
9Thickness of aluminum layer(Square resistance)/2.1GB/T 15717 (Optical density)O.D2.15X·Rite361 10Uniformity of aluminum%7--- 11Coefficient of Friction---0.55ASTM D-1894 12DensityG/cm20.93ASTM D-729 13Sealing strengthG/24mm880ASTM F8...
Aluminium or aluminum is a silvery white member of the boron group of chemical elements. It has the symbol Al and its atomic number is 13. For a typical sample of Al therefractive indexandextinction coefficientat632.8 nmare 1.37289 and 7.617691. Below are files of complete refractive index and...
If a thin film and its substrate have a significantly different coefficient of thermal expansion (CTE), stress can be introduced when one material expands/contracts more rapidly when heated/cooled [1] [2]. Figure 1 depicts a scenario where the change in temperature causes the thin film to exp...
Several properties of these materials were considered, including density, coefficient of thermal expansion, Young's modulus, and Poisson's ratio. These properties were obtained from the built-in material database in COMSOL Multiphysics® and are summarized in Table 6. For TaN, information from ...
Among all the piezoelectric thin films, lead zirconate titanate (PZT) and aluminium nitride (AlN) are considered as representative materials. PZT is a polycrystalline ceramic and belongs to ferroelectric materials. The advantage of PZT films is the high electromechanical coupling coefficient and piezoelec...