Zobrazeno 1 - 10
of 29
pro vyhledávání: '"C. E. Birchenall"'
Autor:
Diana Farkas, C. E. Birchenall
Publikováno v:
Metallurgical Transactions A. 16:323-328
Eutectic compositions and congruently melting intermetallic compounds in binary and multicomponent systems among common elements such as Al, Ca, Cu, Mg, P, Si, and Zn may be useful for high temperature heat storage. In this work, heats of fusion of n
Publikováno v:
Oxidation of Metals. 8:409-455
By use of radiotracer techniques, the iron self-diffusion coefficient in ferrous sulfide single crystals above 620 K was found to be D = D0δ exp {−[(81±4) + (84±20)δ]/RT}where the exponential units are kJ/mole, D0 is 1.7± 0.1×10−2 and 3.0±
Publikováno v:
Journal of Applied Physics. 50:551-554
Indium doping of nominally pure n‐type CdS containing excess Cd can raise the free‐carrier concentration by an order of magnitude over the 77–300 °K temperature range even though this increase is only a small fraction of the total concentratio
Publikováno v:
Journal de Chimie Physique. 53:810-816
Autor:
C. E. Birchenall, H. W. Mead
Publikováno v:
JOM. 8:1336-1339
Self-diffusion of iron in austenite has been studied for 0 to 1.4 wt pet C from 1000° to 1300°C. A large increase in diffusivity and decrease in activation energy with increasing carbon content were observed. The interaction of iron ion vacancies a
Autor:
C. E. Birchenall, R. C. Ruder
Publikováno v:
JOM. 3:142-146
The method of decrease in surface activity was used to determine the rates of diffusion of Coau]60_ into cobalt and into nickel. Since the absorption curves for cobalt radiation were quite complex under the conditions of these experiments, the effect
Publikováno v:
Corrosion. 14:57-64
A study is made of the deep oxidation of iron at high temperatures and in an oxygen atmosphere. Large cavities are always found in specimens whose total oxygen content has been brought to that of FeO. The scale thickness of such specimens, along with
Autor:
C. H. Cheng, C. E. Birchenall
Publikováno v:
JOM. 1:428-434
Autor:
C. E. Birchenall, H. M. Schadel
Publikováno v:
JOM. 2:1134-1138
The vapor pressure of silver has been measured by the Knudsen orifice effusion method 750° to 1050°C using radioactive Ag110 as a tracer. The pressures are given by the following equations: Solid silver: log p = 8.887 − 1.402 × 104/T. Liquid sil
Autor:
C. E. Birchenall, J. G. Faller
Publikováno v:
Journal of Applied Crystallography. 3:496-503
Cation ordering in magnesium and nickel ferrites was studied by X-ray diffraction measurements carried out at the temperature of equilibration and also on quenched specimens. The order parameters on quenched specimens agreed with results previously r