Boron carbide as atomic oxygen protection for the Lexan-carbon filter on the ROSAT wide-field camera

1992 ◽  
Author(s):  
Barry J. Kent ◽  
Bruce M. Swinyard ◽  
Hans-Joerg Maier ◽  
Dagmar Frischke
Keyword(s):  
Boron Carbide ◽  
Atomic Oxygen ◽  
Wide Field ◽  
Oxygen Protection ◽  
Carbon Filter

SiO(X) coatings for atomic oxygen protection of polyimide Kapton in low earth orbit

1992 ◽  
Author(s):  
BRUCE BANKS ◽  
SHARON RUTLEDGE ◽  
LINDA GEBAUER ◽  
CINDY LAMOREAUX
Keyword(s):  
Atomic Oxygen ◽  
Low Earth Orbit ◽  
Earth Orbit ◽  
Oxygen Protection

Preparation and Properties of Organic Silicon Atomic-Oxygen-Protection Film

2014 ◽  
Vol 1058 ◽  
pp. 290-293
Author(s):  
Cun Hui Li ◽  
Kuo Hai Zheng ◽  
Sheng Sheng Yang ◽  
Zhong Hua Li ◽  
Dao Tan Tang
Keyword(s):  
Atomic Oxygen ◽  
Film Structure ◽  
Environmental Threats ◽  
Organic Silicon ◽  
Oxygen Protection ◽  
Materials Used

Materials used on exterior spacecraft surfaces are subjected to many environmental threats which can cause degradation, atomic oxygen is one of the most threats. We prepared organic silicon atomic-oxygen-protection film using method of polymerization. This paper presented the effects on the film structure and its durability of the preparation processing, and analyzed the polymerization theory, the film structure and composition of the film. At last, we tested the film in our ground based atomic oxygen simulator, and indicated that the film worked well.

scholarly journals On Modeling of Synthesis Process of Boron Carbide Based Nanocomposites

2021 ◽  
Vol 6 (1) ◽  
pp. 3
Author(s):  
Levan Chkhartishvili ◽  
Levan Antashvili ◽  
Lasha Dalakishvili ◽  
Roin Chedia ◽  
Otar Tsagareishvili ◽  
...  
Keyword(s):  
Boron Carbide ◽  
Synthesis Process ◽  
Wide Field ◽  
Optimal Route ◽  
First Order ◽  
Hard Materials ◽  
Reaction Constants ◽  
Boron Carbide B4c ◽  
Modern Technologies ◽  
Additional Phase

Nanocomposites based on boron carbide B4C are hard materials with wide field of applications in modern technologies. A system of first-order ordinary differential equations that simulates the process of chemical synthesis of nanopowders of B4C–TiB2 compositions containing titanium diboride (TiB2) as an additional phase is suggested and resolved numerically for a typical ratio of reaction constants. Reagents and products concentrations are found as time-functions. In this way, the optimal route of production technology of boron carbide-based nanomaterials can be identified.

Osmium atomic-oxygen protection by an iridium overcoat for increased extreme-ultraviolet grating efficiency

2003 ◽  
Vol 42 (25) ◽  
pp. 5149 ◽  
Author(s):  
Richelieu Hemphill ◽  
Mark Hurwitz ◽  
Maria G. Pelizzo
Keyword(s):  
Atomic Oxygen ◽  
Extreme Ultraviolet ◽  
Oxygen Protection

Antiadhesion elastomer seal coatings for UV and atomic oxygen protection

2014 ◽  
pp. n/a-n/a
Author(s):  
Henry C. de Groh ◽  
Bernadette J. Puleo ◽  
Deborah L. Waters ◽  
Sharon K. Miller
Keyword(s):  
Atomic Oxygen ◽  
Oxygen Protection ◽  
Elastomer Seal

STM studies of crystal growth

1991 ◽  
Vol 49 ◽  
pp. 374-375
Author(s):  
M. G. Lagally
Keyword(s):  
Crystal Growth ◽  
Molecular Beam ◽  
Chemical Vapor ◽  
Sputter Deposition ◽  
Field Of View ◽  
Scanning Tunneling ◽  
Wide Field ◽  
Tunneling Microscopy ◽  
Wide Field Of View ◽  
The One

It has been recognized since the earliest days of crystal growth that kinetic processes of all Kinds control the nature of the growth. As the technology of crystal growth has become ever more refined, with the advent of such atomistic processes as molecular beam epitaxy, chemical vapor deposition, sputter deposition, and plasma enhanced techniques for the creation of “crystals” as little as one or a few atomic layers thick, multilayer structures, and novel materials combinations, the need to understand the mechanisms controlling the growth process is becoming more critical. Unfortunately, available techniques have not lent themselves well to obtaining a truly microscopic picture of such processes. Because of its atomic resolution on the one hand, and the achievable wide field of view on the other (of the order of micrometers) scanning tunneling microscopy (STM) gives us this opportunity. In this talk, we briefly review the types of growth kinetics measurements that can be made using STM. The use of STM for studies of kinetics is one of the more recent applications of what is itself still a very young field.

Dynamic X-ray imaging of the penetration of boron carbide

2000 ◽  
Vol 10 (PR9) ◽  
pp. Pr9-583-Pr9-588 ◽  
Author(s):  
W. A. Gooch ◽  
M. S. Burkins ◽  
G. Hauver ◽  
P. Netherwood ◽  
R. Benck
Keyword(s):  
Boron Carbide ◽  
X Ray ◽  
X Ray Imaging
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