1618. Adsorption of carbon monoxide on tungsten abundances, dipole moments and sticking coefficients

Classified abstracts 1611-1629 R R McWithey and R J Hayduk, Rep NASA-TN-D-3065, 1965, (NASA, Langley Res, Center, Va).

Nov 39

1611. Interferometer for hypervelocity ranges. (USA) The design of a horizontal plate Mach-Zehnder interferometer use inside the vacuum of hypervelocity ranges is discussed. R L Rowe, ISA Trans, 5, Jan 1966, 44-52.

for

39 1612. Establishment of a synchronous regime in a vacuum-tube oscillator in the presence of noise. (USSR) The transient processes in a vacuum-tube oscillator synchronized by a small harmonic signal with a random initial phase in the presence of noise using the Fokker-Planck equation are analysed. J G Akopian, Radiotechnika Elektronika, 11, Jan 1966, 32-41. 39 1613. Determination of elevated temperature fatigue data on refractory alloys in ultrahigh vacuum. (USA) A molybdenum-base alloy TZC in plate form and an alloy TZM in bar form were evaluated as both notch and smooth specimens. The results indicate that the TZM exhibits a fatigue curve that is extremely sensitive to stress level in the 10’ to lOlo cycle range. C R Honeycutt and J C Sawyer, NASA-CR-54775, Ott 1965, (TRW Equipment Lmbs, Cleveland, Ohio).

IV. Materials technology 40. Gases and

and techniques

used in vacuum

vapours

41 : 37 Study of the laws governing the evaporation of alloys. See abstract number 1558. 41 : 37 Zone melting molybdenum in deep vacuum. See abstract number 1559. 41 : 31 The heat treatment of metallic materials in vacua. See abstract number 1601. 41 : 3Y Generation of long time creep dam of refractory alloys at elevated temperatures. See abstract numher 1607. 41 : 39 Determination of elevated temperature fatigue data on refractory alloys in ultrahigh vacuum. See abstract number 1609. 41 1623. Mass-spectrometric determination of the dissociation energy of beryllium monofluoride. (USA) D L Hildenbrand and E Mm-ad, J Chem Phys, 44 (4), Feb 1966, 1524-1529. 41 1624. Device for adsorption of mercury vapour. (USA) Mercury may be removed from an atmosphere containing the element by passing the vapours through a chamber which contains an extended surface upon which a thin film of metal such as Ag or Au or some combination of these has been deposited. S H Williion and M H Morris, US Patent 3,232,033 (Cl 55-387), I Feb 1966, Appl24 Apr 1962, 4pages. 41 1625. Working with tantalum. (USA) E Droegkamp, Metal Progress, 89 (4), Apr 1966, 133-142.

40

1614. Infrared studies of absorbed molecules on metal surfaces by reflection techniques. (USA) R G Greenler, J Chem Phys, 44 (I), Jan 1966, 310-315. 40 1615. Dissociation energy of Fa (g) obtained from the study of gas flow of intermediate pressures through an orifice. (USA) R E Yates, et al, J Chem Phys, 44 (2), 15 Jan 1966, 498-504. 40 1616. On the calibration of the mass spectrometer for measurement of partial vapour pressures. (USA) E D Cater, J Chem Phys, 44 (4), Feb 1966, 1342-1345. 40 1617. Detection of long-lived excited states of molecules by Penning ionization. (USA) V Cermak, J Chem Phys, 44 (4), Feb 1966, 1318-1323. 40 1618. Adsorption of carbon monoxide on tungsten abundances, dipole moments and sticking coefficients. (USA) A A Bell and R Gamer, J Chem Phys, 44 (3), Feb 1966, 1065-1080. 40 1619. Mass-spectrometric studies of the rare gases using an electron velocity selector. (USA) C E Brion, et al, J Chem Phys, 44 (3), Feb 1966, 1034-1038.

42. Glass, ceramics

and refractory

oxides

42 : 30 Refractory crucible for vacuum deposition of metals. See abstract . number 1397. 42 1626. Mechanical working of glass. Part 8. Automatic vacuum glassblowing machines. (Italy) F Franceschini, Vetro Silicati, 9 (51), 1965, 10-I 7, (in Italian). 42 1627. Dielectric properties of electrovacuum glasses and method of calculating the loss factor. (USSR) The dielectric properties of a number of glasses used in electrovacuum work were measured. The glass samples were taken direct from the factory, cut into cylindrical discs, polished, degreased, and dried: silver electrodes for the resistance measurements were sealed in at 350°C. The loss angles and dielectric constants were determined by the bridge method at 100 c/s to 10 kc/s and by the resonance method at 1 MC/S, a correction being introduced for end effects. The results are tabulated and compared. V B Brailovskii and 0 V Mazurin, Collection “Electronic Equipment” (Elektron pribostroenie), Moscow-Leningrad, “Energiya”, 1965, 107-113, (in Russian).

1620. Photoionization mass spectrometry of CO. (USA) R M Reese and H M Rosenstock, J Chem Phys, 44 (5), I Mar 1966, 2007-2009. 43. Plastics 1621. Pulsed-mass-spectrometric study of the bimolecular formation of Na+. (USA) M C Cress, et al, J Chem Phys, 44 (5), I Mar 1966, 2212-2213. 1622. Effect of oxygen, nitrogen and water in low-pressure hydrogen discharges. (USA) P R Rony and D N Hanson, J Chem Phys, 44 (6), 15 Mar 2966, 2536-2538. 41. Metals

and alloys

41 : 30 Structure and growth of polycrystalline Fe and permalloy thm films. See abstract number 1362. 41 : 37 Effect of vacuum on the mechanical behaviour of metals. See abstract number 1554.

and elastomers

43 : 28 Vacuum thermocouple feedthrough. See abstract number 1340. 43 : 30 Evaporation on plastics in high vacuum. See abstract number 1357. 43 1628. Polyurethans as cryogenic adhesives. (USA) Polyurethans containing a polyether backbone had superior adhesion at cryogenic temperature as compared with epoxy-resin systems, but the latter were stronger at 400°F. The good low temperature behaviour of these systems is attributed to the flexibility of the backbone. j R Sandler and F R Berg, J Appl Polymer Sci, 9 (Z2), 1965, 39091916. 43 1629. Vacuum forming ABS (Acrylonitrile-butadiene-styrene). (USA) Guide to ABS vacuum forming and its application potential. Equipment used is illustrated. E J McDonald Jr, Plastics Technol, II (ZZ), 1965, 35-37. 475