Enhanced heat transfer by room temperature deposition of AlN film on aluminum for a light emitting diode package

Fabrication of a Thick Crystalline Al2O3 Coating with Insulation and High Thermal Conductivity via Anodic Oxidation and Subsequent Mic Arc Discharge Treatment

“…According to the types of acid, the electrolyte used in the process of anodizing can be divided into sulfuric acid, phosphate acid, chromic acid, oxalic acid and so on. The parameters of the micro-structure of the aluminum alloy anodic coating in different electrolytes are shown in Table 2 (5) Due to the heat released by Equation (2) being lower than the heat required by the Equation 3, the anodic coating is mainly consisted of Al(OH)3, resulting in the insulation and thermal conductivity of anodic coating being far lower than MAO coating.…”

“…Typically, an LED heat sink substrate consists of three layers: aluminum alloy at the bottom, a copper circuit in the top, and various organic compounds have been used as middle layers to ensure insulation between them [4]. Nonetheless, poor thermal emissivity decrease the thermal dissipation efficiency of radiation [5]. With the rapid development of LED lamps to high power, high light intensity and small volume, heat dissipation has become an essential challenge [6].…”

Dense and highly textured coatings obtained by aerosol deposition method from Ti3SiC2 powder: Comparison to a dense material sintered by Spark Plasma Sintering

“…4 Many kinds of materials have already been deposited by ADM, including non-oxides, [30][31][32][33][34] simple ceramic oxides, [35][36][37][38][39] apatites, 40 ferrites, 41 perovskites, 35,[42][43][44][45][46][47] spinel, 48 and more recently some composite materials with ceramic-ceramic, 49,50 ceramic-metal 51 or ceramic-organic 52,53 combinations. These coatings have many application possibilities in different fields such as batteries, 54 thermal barriers, electrolytes or anticorrosion coatings for SOFC, 55 catalysis, 36,56 biomedicine, 36 membranes, 57 microdevices 35 and many others.…”

Influence of Carrier Gas Composition on the Stress of Al2O3 Coatings Prepared by the Aerosol Deposition Method

“…Therefore, AD is advantageous for a broad spectrum of temperature sensitive substrate materials, including ceramics [ 2 ], metals [ 7 ], silicon [ 8 ], or even polymers [ 9 ]. Materials that have been successfully deposited by this process are non-oxide materials (AlN [ 10 ], MgB 2 [ 11 ]) as well as oxide materials (Al 2 O 3 [ 12 ], TiO 2 [ 5 , 13 ], Y 2 O 3 [ 14 ], Pb(Zr,Ti)O 3 [ 15 ], SrTi 1−x Fe x O 3 [ 5 ]), and compound materials (Al 2 O 3 /PTFE [ 16 ], ZnS/Diamond [ 8 ]).…”