In situ measurements of deformation behavior of individual phases in composites by X-ray diffraction.
Lattice strains in matrix phase of aluminum-boron and copper-tungsten composites measured by X ray diffraction
Cheskis, H. P.↗
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Microstrain behavior of metal-matrix composites.
Metal matrix composites compression microstrain behavior, analyzing continuous fiber composites of magnesium-boron and copper-tungsten
Hay, D. R.↗
Casting copper to tungsten for high power arc lamp cathodes
A method for making 400-kW arc lamp cathodes is described. The cathodes are made by casting a 1.75-in. diameter copper body onto a thoriated tungsten insert. The addition of 0.5-percent nickel to the copper prevents voids from forming at the copper-tungsten interface. Cathodes made by this process have withstood more than 110 hours of operation in a 400-kW arc lamp.
Will, H. A.↗
Effect of current ripple on cathode erosion in 30 kWe class arcjets
An investigation was conducted to study the effect of current ripple on cathode erosion in 30 kWe class arcjets to determine the change in the cathode erosion rate for high (11 percent) and low (4 percent) current ripple. The measurements were conducted using a copper-tungsten cathode material to accelerate the cathode erosion process. It is shown that the high ripple erosion rate was initially higher than the low ripple erosion rate, but decreased asymptotically with time to a level less than half that of the low ripple value. Results suggest that high ripple extends the cathode lifetime for long duration operation, and improves arc stability by increasing the cathode attachment area.
Harris, William J.↗