scholarly journals Structure and properties of white Si–O–C(–H) ceramics derived from polycarbosilane by thermal oxidation curing and H2 decarbonization process

2016 ◽  
Vol 124 (10) ◽  
pp. 1094-1099 ◽  
Author(s):  
Masaki NARISAWA ◽  
Hiroki HOKAZONO ◽  
Kei MITSUHARA ◽  
Hirofumi INOUE ◽  
Toshiaki OHTA
Keyword(s):  
Thermal Oxidation ◽  
Structure And Properties ◽  
Decarbonization Process

Structure and Properties of ZnO: (Cr, N) Film Prepared by Thermal Oxidation Method

2017 ◽  
Vol 9 (4) ◽  
pp. 471-475
Author(s):  
Wenjun Sun ◽  
Kexin Sun ◽  
Lili Wang ◽  
Jinding Sun ◽  
Chengbao Yao ◽  
...  
Keyword(s):  
Thermal Oxidation ◽  
Structure And Properties ◽  
Oxidation Method

Influence of air circulation on the structure and properties of melt-spun PAN precursor fibers during thermal oxidation

RSC Advances ◽  
2015 ◽  
Vol 5 (47) ◽  
pp. 37669-37674 ◽  
Author(s):  
Shuping Liu ◽  
Keqing Han ◽  
Lei Chen ◽  
Ying Zheng ◽  
Muhuo Yu
Keyword(s):  
Ionic Liquid ◽  
Thermal Oxidation ◽  
New Method ◽  
Structure And Properties ◽  
Melt Spun ◽  
Air Circulation

A new method of melt-spun process was developed to prepare PAN precursor fibers using ionic liquid as the medium of processing.

scholarly journals Characteristic of Oxide Layers Obtained on Titanium in the Process of Thermal Oxidation

2016 ◽  
Vol 61 (2) ◽  
pp. 853-856 ◽  
Author(s):  
K. Aniołek ◽  
M. Kupka ◽  
A. Barylski ◽  
Ł. Mieszczak
Keyword(s):  
Thermal Oxidation ◽  
Layer Growth ◽  
Oxidation Temperature ◽  
Structure And Properties ◽  
Initial State ◽  
Crystallographic Form ◽  
Oxide Layers ◽  
X Ray ◽  
Oxide Particles ◽  
Oxidation In Air

Abstract Thermal oxidation in air may be one method to improve the properties of titanium and its alloys through its influence on the structure and properties of the material’s surface layer. This paper presents a description of oxide layers obtained on the surface of Grade 2 titanium as a result of oxidation at temperatures of 600 and 700°C. On the basis of kinetic curves, it was found that the intensity of oxide layer growth increased with oxidation temperature. Studies of the surface morphology of oxide layers showed that the size of the formed oxide particles was greater following oxidation at 600°C. The obtained layers were subjected to X-ray phase analysis and microhardness measurements. Irrespective of oxidation temperature, the scale consisted of TiO2 oxide in the crystallographic form of rutile and of Ti3O oxide. The hardness of oxide layers amounted to around 1265 HV and was more than 4 times higher compared to the material in i ts initial state.

Influence of External Tension on the Structure and Properties of Melt-Spun PAN Precursor Fibers during Thermal Oxidation

2015 ◽  
Vol 300 (10) ◽  
pp. 1001-1009 ◽  
Author(s):  
Shuping Liu ◽  
Keqing Han ◽  
Lei Chen ◽  
Ying Zheng ◽  
Muhuo Yu ◽  
...  
Keyword(s):  
Thermal Oxidation ◽  
Structure And Properties ◽  
Melt Spun

Structure of second phases in TiAl alloys containing Cr and B

1991 ◽  
Vol 49 ◽  
pp. 576-577
Author(s):  
Ernest L. Hall ◽  
Shyh-Chin Huang
Keyword(s):  
Grain Size ◽  
Second Phase ◽  
Structure And Properties ◽  
Tial Alloys ◽  
Second Phases ◽  
Interstitial Elements

Addition of interstitial elements to γ-TiAl alloys is currently being explored as a method for improving the properties of these alloys. Previous work in which a number of interstitial elements were studied showed that boron was particularly effective in refining the grain size in castings, and led to enhanced strength while maintaining reasonable ductility. Other investigators have shown that B in γ-TiAl alloys tends to promote the formation of TiB2 as a second phase. In this study, the microstructure of Bcontaining TiAl alloys was examined in detail in order to describe the mechanism by which B alters the structure and properties of these alloys.

Relationships between hierarchical structure and properties in macromolecular systems

1987 ◽  
Vol 45 ◽  
pp. 440-443
Author(s):  
E. Baer
Keyword(s):  
Uniaxial Tension ◽  
Hierarchical Structure ◽  
Inorganic Material ◽  
Hierarchical Structures ◽  
Bone Collagen ◽  
Structure And Properties ◽  
Connective Tissues ◽  
Scale Level ◽  
Fibrous Protein ◽  
Macromolecular Systems

The most advanced macromolecular materials are found in plants and animals, and certainly the connective tissues in mammals are amongst the most advanced macromolecular composites known to mankind. The efficient use of collagen, a fibrous protein, in the design of both soft and hard connective tissues is worthy of comment. Very crudely, in bone collagen serves as a highly efficient binder for the inorganic hydroxyappatite which stiffens the structure. The interactions between the organic fiber of collagen and the inorganic material seem to occur at the nano (scale) level of organization. Epitatic crystallization of the inorganic phase on the fibers has been reported to give a highly anisotropic, stress responsive, structure. Soft connective tissues also have sophisticated oriented hierarchical structures. The collagen fibers are “glued” together by a highly hydrated gel-like proteoglycan matrix. One of the simplest structures of this type is tendon which functions primarily in uniaxial tension as a reinforced elastomeric cable between muscle and bone.

The Structure and Properties of MoSi2 Thin Film in Mos Process

1980 ◽  
Vol 38 ◽  
pp. 326-327
Author(s):  
C.K. Wu ◽  
P. Chang ◽  
N. Godinho
Keyword(s):  
Thin Film ◽  
Integrated Circuits ◽  
High Performance ◽  
Large Scale ◽  
Process Development ◽  
Structure And Properties ◽  
Metal Silicides ◽  
High Oxidation ◽  
Important Approach ◽  
High Oxidation Resistance

Recently, the use of refractory metal silicides as low resistivity, high temperature and high oxidation resistance gate materials in large scale integrated circuits (LSI) has become an important approach in advanced MOS process development (1). This research is a systematic study on the structure and properties of molybdenum silicide thin film and its applicability to high performance LSI fabrication.

Structure and properties of H5O2+

1991 ◽  
Vol 88 ◽  
pp. 411-420 ◽  
Author(s):  
D Peeters ◽  
G Leroy
Keyword(s):  
Structure And Properties
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