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形状记忆合金驱动的微执行器 总被引:7,自引:0,他引:7
以TiNi基为代表的形状记忆合金(SMA)具有做功密度大、可恢复应变应力大、驱动电压低、良好生物相容性等优点,在微执行器领域具有极为广阔应用前景。本文主要总结了TiNi基SMA丝、薄带、薄膜在微执行器方面的国内外研究应用现状,并对目前SMA在微驱动领域应用所存在的问题及其未来的发展趋势进行了分析讨论。 相似文献
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受经济危机影响,从2008年第四季度起,中国家电出口受到前所未有的冲击,出现持续下滑。2009年1~10月,中国家电累计进出口总额仅为263.6亿美元,与2008年同期相比下降15.2%。主要家电产品——空调、冰箱和洗衣机的出口都出现较大幅度下滑,其中又以2009年上半年的出口形势最为严峻。 相似文献
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结合中职教育的特点,阐述了理实一体化教学模式实施的几个环节,笔者通过电子技术课程的教学实例,对理实一体化教学模式在中职教学中的应用进行了探索性的研究,并就理实一体化教学的实施进行了详细地阐述。 相似文献
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Both sputtering conditions and crystallizing temperatures have great influence on the microstructures and phase transformation characteristics for TislNi44Cus. By means of the resistance-temperature measurement, X-ray diffraction and atomic fore microscopic study, the results indicate that the transformation temperatures of the thin films increase and the “rock candy“ martensitic relief is more easily obtained with promoting the sputtering Ar pressure, sputtering power, orcrystallizing temperature. However, when sputtering Ar pressure, sputtering power, or crystallizing temperature are lower, a kind of “chrysanthemum“ relief, which is related with Ti-rich GP zones, is much easier to be observed. The reason is that during crystallization process, both of the inherent compressive stresses introduced under the condition of higher sputteringpressure or higher crystallizing temperature are helpful to the transition from GP zones to Ti2(NiCu) precipitates and the increase of the transformation temperatures. The addition of copper to substitute for 5 96 nickel in mole fraction can reduce the transformation hvsteresis width to about 10 - 15 ℃. 相似文献
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成都无缝钢管厂用攀钢含钒生铁平炉炼钢过程中,产生出三种渣:初期渣含钒~6%(以V_2O_5计,以下同),中期渣(即沸腾渣)含钒2~3%,末期渣(即出钢渣)含钒1—2%。由于没有合理的处理工艺, 相似文献
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