Zobrazeno 1 - 10
of 63
pro vyhledávání: '"N. deHaas"'
Publikováno v:
IEEE Transactions on Components, Hybrids, and Manufacturing Technology. 15:956-963
Publikováno v:
1992 Proceedings 42nd Electronic Components & Technology Conference.
Commercial and model epoxy die-attach adhesives with and without silver filler, were investigated to examine the effect that the silver filler has on the outgassing characteristics of the organic matrix. The materials were subjected to typical temper
Autor:
N. deHaas, A. A. Westenberg
Publikováno v:
The Journal of Chemical Physics. 62:3321-3325
Rate constants for the reaction H + CH3X → CH3 + HX (X=Br, Cl, F) have been measured over a wide temperature range using a discharge flow reactor, with pseudo‐first‐order decays of CH3X measured mass spectrometrically and excess H concentration
Publikováno v:
IEEE Transactions on Components, Hybrids, and Manufacturing Technology. 12:571-577
An investigation of microelectronic conductive die attach adhesives to determine the volatile species that evolve during cure and after postcure processing, such as preseal bakeout and burn-in, is described, and the results are presented and discusse
Autor:
M. J. Linevsky, N. deHaas
Publikováno v:
The Journal of Chemical Physics. 77:6060-6064
The production of known concentrations of chlorine atoms by the laser photolysis of Cl2 allows the effect of the optical thickness on fluorescent intensity and base‐line chlorine atom decay rates to be evaluated. A simple absorption model leads to
Publikováno v:
IEEE Transactions on Components, Hybrids, and Manufacturing Technology. 9:403-409
Electrical failures due to excessive current leakage have been observed in several hybrids during both hot and cold temperature testing. Failures have been correlated with increased amounts of ionic and gaseous contamination in the package. Short-ter
Autor:
N. deHaas, D. M. Silver
Publikováno v:
The Journal of Chemical Physics. 74:1745-1749
Using the flash photolysis–resonance fluorescence technique, the rate of the reaction H+CF3Br was measured over the temperature range 225–377 K. The rate constants are found to obey k=(1.53±0.19)×1013 cm3 mol−1 s−1 exp[(−4341±70) cal mol
Autor:
A. A. Westenberg, N. deHaas
Publikováno v:
The Journal of Chemical Physics. 63:5411-5415
The rate of the reaction O+SO2+M→SO3+M has been measured under pseudo‐first‐order conditions in a discharge flow reactor with ESR detection. For M=He at room temperature, extensive measurements over a wide SO2 mole fraction range were used to e
Autor:
A. A. Westenberg, N. deHaas
Publikováno v:
The Journal of Chemical Physics. 66:4900-4905
The kinetics of the reactions O+C2H2 and O+C2H3Cl have been studied at room temperature by the flash photolysis–resonance fluorescence technique. In the O+C2H2 case the measurements were complicated by a strong background chemiluminescence in the v
Autor:
N. deHaas, A. A. Westenberg
Publikováno v:
The Journal of Chemical Physics. 58:4066-4071
New measurements are reported on the rate constant for OH + OH → H2O + O (k2) at room temperature. The study was made with a fast flow reactor using a fixed ESR detector and a movable NO2 injector for generating OH by the H + NO2 reaction. Careful