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Al al2o3

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Cambridge Nanotherm presenting nanoceramics for high-power packaged LEDs at
Until now electronics-grade ceramics, in particular cost-effective alumina (Al2O3), have been used as a substrate in high-power LEDs. Where Al2O3 falls down is in its thermal performance – at about 20W/mK it's a poor performer, says the firm.
Cientistas criam material cerâmico semelhante ao revestimento das pérolas
O material possui plaquetas de alumina (Al2O3) compactadas e apresenta uma segunda fase com menor rigidez, que é responsável por garantir a redistribuição da carga aplicada e a deflexão de fraturas. ... Foto: Florian Bouville et al.
铝及大多数铝合金有相当高的抗蚀性,因为在空气中能极为迅速地在它们的表面上形成一层薄薄的致密的Al2O3膜,其厚度仅5nm,颜色与铝相同。通常,氧化膜在PH4.0~9.0的溶液中是稳定的, ...
“Yolks” and “shells” improve rechargeable batteries
“We came up with the method serendipitously, it was a chance discovery,” he says. The aluminum particles they used, which are about 50 nanometers in diameter, naturally have an oxidized layer of alumina (Al2O3).

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