Mechanism of formation of white spots in the microstructure of titanium carbide-based cermets

1992 ◽  
Vol 47 (2) ◽  
pp. 60
Keyword(s):  
Titanium Carbide ◽  
Mechanism Of Formation ◽  
White Spots

scholarly journals Formation Mechanism of White Spots Observed in Nitrogen Contained Titanium Carbide Based Cermets.

1991 ◽  
Vol 38 (4) ◽  
pp. 499-504
Author(s):  
Osamu Terada ◽  
Nobujiro Tsuchiya ◽  
Akira Sasaki ◽  
Hisashi Suzuki
Keyword(s):  
Titanium Carbide ◽  
Formation Mechanism ◽  
White Spots

scholarly journals OBTAINING COATINGS FROM HARD ALLOYS BY EXPLOSIVE LOADING OF MIXTURES OF CHROME CARBIDE AND TITANIUM CARBIDE POWDERS ON METAL BASES

2020 ◽  
pp. 10-13
Author(s):  
A. V. Krokhalev ◽  
V. O. Kharlamov ◽  
E. A. Ivanenko ◽  
D. R. Chernikov ◽  
S. V. Kuz’min ◽  
...  
Keyword(s):  
Phase Composition ◽  
Detonation Wave ◽  
Titanium Carbide ◽  
Explosive Loading ◽  
Hard Alloys ◽  
Mechanism Of Formation ◽  
Metal Substrates ◽  
Composition And Structure ◽  
Structure Of Coatings ◽  
Explosive Pressing

The principal features of the mechanism of formation of coatings from hard alloys during their production by explosive pressing of mixtures of CrC and Ti powders on metal substrates are described. The phase composition and structure of coatings deposited using loading by a plane normally incident detonation wave and sliding loading are considered.

Tuberöse Sklerose: Erweiterung der Diagnostik durch MR-Tomographie und Computertomographie

1992 ◽  
Vol 31 (05) ◽  
pp. 192-198
Author(s):  
H. Henkes ◽  
J. Richter ◽  
A. Kretschmer ◽  
P. Benz ◽  
G. Brill ◽  
...  
Keyword(s):  
Tuberöse Sklerose ◽  
White Spots

ZusammenfassungEs wird über 10 Kinder und eine 22jährige Erwachsene mit tuberöser Sklerose berichtet. Neben der Erhebung des internistischen und neurologischen Status wurden die Patienten computer- und kernspintomographisch untersucht. Alle 10 Kinder hatten zerebrale Krampfanfälle, nur 8 Hautveränderungen (Adenoma sebaceum, white spots), 4 ein Rhabdomyom des Herzens, 4 Astrozytome der Retina und nur 4 wiesen die vollständige Trias der Erkrankung mit Epilepsie, Hautveränderungen und geistiger/körperlicher Entwicklungsverzögerung auf. Die erwachsene Patientin war an einer Abortivform der tuberösen Sklerose erkrankt und wurde durch beidseitige Angiomyolipome als einzige extrazerebrale Manifestation auffällig. Bei allen Patienten wurden Mark-/Rindentubera, Verkalkungen und subependymale Riesenzellastrozytome in der CT und der MRT des Gehirns gefunden. Die Hirngewebsveränderungen ließen sich in 4 Läsionstypen einteilen. Wegen der humangenetischen Beratung im Erkrankungsfall und der Erfassung der für die Symptome der Patienten zugrunde liegenden Erkrankung sollten alle Kinder mit Epilepsie und ebenso alle Patienten, bei denen die gesamte Trias der Erkrankung fehlt, MR-tomographisch untersucht werden.

West syndrome in identical twins with white spots

2005 ◽  
Vol 36 (02) ◽  
Author(s):  
O Debus ◽  
H Bosse ◽  
B Fiedler ◽  
G Kurlemann
Keyword(s):  
West Syndrome ◽  
Identical Twins ◽  
White Spots

Regarding the mechanism of formation of nonmetallic inclusions conglomerates of system Al2O3-MgO

2019 ◽  
Vol 75 (12) ◽  
pp. 1341-1351
Author(s):  
A. A. Safronov ◽  
V. S. Dub ◽  
V. V. Orlov ◽  
K. L. Kosyrev ◽  
A. S. Loskutov ◽  
...  
Keyword(s):  
Nonmetallic Inclusions ◽  
Mechanism Of Formation

Assessment of ability to varnish turbine oils

2020 ◽  
Vol 06 ◽  
pp. 28-33
Author(s):  
I.V. Mitin ◽  
◽  
I.R. Tatur ◽  
K.U. Smirnov ◽  
A.M. Suloev ◽  
...  
Keyword(s):  
Antioxidant Properties ◽  
Mechanism Of Formation ◽  
Critical Situation ◽  
Antioxidant Content ◽  
Turbine Equipment

The reasons for the formation of varnish deposits of turbine oils are determined. It is shown that the performance of turbine oils is determined by methods of ASTM D7843 (MPC) and ASTM D6971 (RUL) can be assessed, the process of formation of varnish deposits, the level of antioxidant properties, antioxidant content of, amend, and extend the oil change, and to predict critical situation in the operation of turbine equipment. The mechanism of formation of varnish deposits in turbine oils is proposed.

ABOUT HEAT CAPACITY OF TITANIUM CARBIDE TiCx

2019 ◽  
pp. 56-66
Author(s):  
I. Khidirov ◽  
V. V. Getmanskiy ◽  
A. S. Parpiev ◽  
Sh. A. Makhmudov
Keyword(s):  
Heat Capacity ◽  
High Temperature ◽  
Titanium Carbide ◽  
Temperature Dependence ◽  
Carbon Concentration ◽  
Room Temperature ◽  
Thermodynamic Characteristics ◽  
Liquid Nitrogen Temperature ◽  
Analysis Data ◽  
Thermal Excitation

This work relates to the field of thermophysical parameters of refractory interstitial alloys. The isochoric heat capacity of cubic titanium carbide TiCx has been calculated within the Debye approximation in the carbon concentration  range x = 0.70–0.97 at room temperature (300 K) and at liquid nitrogen temperature (80 K) through the Debye temperature established on the basis of neutron diffraction analysis data. It has been found out that at room temperature with decrease of carbon concentration the heat capacity significantly increases from 29.40 J/mol·K to 34.20 J/mol·K, and at T = 80 K – from 3.08 J/mol·K to 8.20 J/mol·K. The work analyzes the literature data and gives the results of the evaluation of the high-temperature dependence of the heat capacity СV of the cubic titanium carbide TiC0.97 based on the data of neutron structural analysis. It has been proposed to amend in the Neumann–Kopp formula to describe the high-temperature dependence of the titanium carbide heat capacity. After the amendment, the Neumann–Kopp formula describes the results of well-known experiments on the high-temperature dependence of the heat capacity of the titanium carbide TiCx. The proposed formula takes into account the degree of thermal excitation (a quantized number) that increases in steps with increasing temperature.The results allow us to predict the thermodynamic characteristics of titanium carbide in the temperature range of 300–3000 K and can be useful for materials scientists.

Sign in / Sign up

Export Citation Format

Share Document