PROPERTIES AND FAILURE MODES OF INCANDESCENT TUNGSTEN FILAMENTS
PROPERTIES AND FAILURE MODES OF INCANDESCENT TUNGSTEN FILAMENTS
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DOI：
10.1049/ip-a-1.1980.0023
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发表时间：
1980-01-01
期刊：
影响因子：
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通讯作者：
HORACSEK, O
中科院分区：
文献类型：
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作者：
HORACSEK, O
掺杂钨丝的行为进行了讨论，特别是参考白炽灯的寿命控制过程。由于灯故障是一个复杂的现象，取决于许多条件，似乎没有一个普遍有效的机制，可以在所有情况下令人满意地解释钨丝的有限寿命。有人建议，除了由于局部缺陷的灯丝的不均匀蒸发，其他机制，如钾填充的气泡内的线的迁移和生长，和晶界滑动促进不利的晶粒形状，也可能有助于失败的白炽灯。据推测，在更好地理解掺杂效应和失效机制的基础上，可以通过优化气泡分散、晶粒结构和其他影响寿命的参数来实现灯质量的进一步改善。
The behaviour of doped tungsten filaments is discussed with particular reference to the life-controlling processes in incandescent lamps. Since lamp failure is a complex phenomenon depending on many conditions, it appears that there is no single mechanism of universal validity by which the finite life of the tungsten filaments can be explained satisfactorily in all cases. It is suggested that, in addition to the nonuniform evaporation of the filament owing to local defects, other mechanisms, like migration and growth of the potassium-filled bubbles within the wire, and grain-boundary sliding promoted by unfavourable grain shape, may also contribute to the failure of incandescent lamps. Presumably, on the basis of a better understanding of the doping effect and failure mechanisms, further improvements can be achieved in lamp quality by optimisation of bubble dispersion, grain structure and other life-influencing parameters.