Thermal expansion coefficient has to be matched to the materials being joined and often is chosen in between the coefficients of expansion of the materials.
12.
If the inner material's coefficient of expansion is slightly less, the seal will tighten as it cools, which is often beneficial.
13.
The volume coefficient of expansion is given by 2?0 " 6 T 2 " 0.0002T + 0.006 K " 1.
14.
Antimony and tin are added to make the character produced durable and tough while reducing the difference between the coefficients of expansion of the matrix and the alloy.
15.
Special alloys are often used for this purpose, ensuring that the coefficients of expansion match, and sometimes thin, metallic coatings may be applied to a metal to create a good bond with the glass.
16.
Douglas-fir parallel to grain, e . g ., has a thermal coefficient of expansion of 3.5 ( our article, orig . source ), which is 1 / 6 of that of brass.
17.
In 1930, Georg Joos conducted an experiment using an automated interferometer with arms forged from pressed quartz having very low thermal coefficient of expansion, that took continuous photographic strip recordings of the fringes through dozens of revolutions of the apparatus.
18.
The thermal cycle of being switched on and off caused stress on the " metal-to-glass " seal ( both which have different coefficients of expansion and contraction ) leading to the ingress of air and failure.
19.
The two main reasons were improper installations ( poor workmanship ) and the differences in the coefficient of expansion between aluminum wire used in the 1960s to mid-1970s and the terminations, particularly when the termination was a steel screw on an electrical device.
20.
The coefficient of expansion of glass is miniscule compared to that of mercury, much below the significant figure range; I wouldn't even consider it a factor here .-- 32 " "'04 : 02, 27 September 2009 ( UTC)
