长时间退火 meaning in English
long term annealing
long-term annealing
prolonged alloy
Examples
- The maximal power outputs of 37 . 0 mw / cm2 and 30 . 0 mw / cm2 for the p - and n - type laminated materials respectively at the temperature difference 490 have been experimentally obtained , which are about 2 . 5 and 3 . 0 times those of - fesi2 . chemical analyses show that the interface failure between the bridge alloy and the semiconductor bi2te3 results mainly from the eutectic mixtures with low melting point and brittle compounds formed during welding and long time annealing at 190 . it is found that the electrical properties of a laminated structure are mainly controlled by the wettability of the bridge alloy on the semiconductor surface
发现： 1 )叠层材料具有明显优于均质材料的热电性能，在490温差下， p -型和n -型叠层材料的最大输出功率分别达到37 . 0和30 . 0 ( mw / cm ~ 2 ) ，是同类型均质- fesi _ 2的2 . 5和3倍； 2 )在焊接过程和190长时间退火处理过程中，焊接过渡层合金和基体半导体(特别是bi _ 2te _ 3 )之间存在明显的元素相互扩散，从而在过渡层中形成一些低熔点共晶体和脆性化合物，这是导致叠层材料破坏的主要原因； 3 )焊接过渡层合金与半导体基体之间的润湿性是影响界面层电性能的主要因素。