Preparation of mesocarbon microbeads from a synthetic Isotropic pitch through two stage heat treatment in the presence of carbon black

Carbon ◽  
1998 ◽  
Vol 36 (7-8) ◽  
pp. 1231-1233 ◽  
Author(s):  
Y.-G. Wang ◽  
Y.-C. Chang ◽  
S. Ishida ◽  
Y. Korai ◽  
I. Mochida
Keyword(s):  
Heat Treatment ◽  
Carbon Black ◽  
Two Stage ◽  
Mesocarbon Microbeads ◽  
Isotropic Pitch ◽  
Stage Heat Treatment

Crystallization and dielectric properties of SrO–BaO–Nb2O5–GeO2 tungsten–bronze glass–ceramics

2001 ◽  
Vol 16 (7) ◽  
pp. 2057-2063 ◽  
Author(s):  
Jiin-Jyh Shyu ◽  
Hsin-Wei Peng
Keyword(s):  
Heat Treatment ◽  
Dielectric Properties ◽  
Tungsten Bronze ◽  
Glass Ceramics ◽  
Dielectric Behavior ◽  
Dendritic Morphology ◽  
Dielectric Constants ◽  
Two Stage ◽  
Tetragonal Tungsten Bronze ◽  
Stage Heat Treatment

The crystallization and dielectric properties of SrO–BaO–Nb2O5–GeO2 glass–ceramics were investigated. One- and two-stage heat-treatment methods were used to convert the parent glass to glass–ceramics. Strontium barium niobate (SBN) with a tetragonal tungsten-bronze structure formed as the major crystalline phase. When the crystallizing temperature/time was increased, the secondary crystalline BaGe2O5 phase coexisted with SBN. BaGe2O5 formed as a surface layer grown from the surface into the interior of the sample. The dendritic morphology of SBN crystals was examined. The glass–ceramics crystallized by two-stage heat treatment have higher dielectric constants than those crystallized by one-stage heat treatment. The highest dielectric constant that was obtained in the present glass–ceramics was 320. The glass–ceramics showed relaxor-type dielectric behavior.

Two-Stage Heat Treatment of Steel 30CrMnSi and Its Optimization

2016 ◽  
Vol 58 (5-6) ◽  
pp. 362-368 ◽  
Author(s):  
Rasoul Khayyam Nekouei ◽  
Reza Akhaghi ◽  
Rouhollah Tahmasebi ◽  
Arsalan Ravanbakhsh ◽  
Ali Jafari Moghaddam
Keyword(s):  
Heat Treatment ◽  
Two Stage ◽  
Stage Heat Treatment

Effects of Two-stage Heat Treatment on Delayed Coke and Study of Their Surface Texture Characteristics

JOM ◽  
2016 ◽  
Vol 69 (12) ◽  
pp. 2460-2466 ◽  
Author(s):  
Ui-Su Im ◽  
Jiyoung Kim ◽  
Seon Ho Lee ◽  
Byung-Rok Lee ◽  
Dong-Hyun Peck ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Surface Texture ◽  
Two Stage ◽  
Texture Characteristics ◽  
Stage Heat Treatment

Optimisation of a two-stage heat treatment process: durability aspects

2006 ◽  
Vol 41 (1) ◽  
pp. 31-57 ◽  
Author(s):  
M. J. Boonstra ◽  
J. van Acker ◽  
E. Kegel ◽  
M. Stevens
Keyword(s):  
Heat Treatment ◽  
Treatment Process ◽  
Heat Treatment Process ◽  
Two Stage ◽  
Stage Heat Treatment

scholarly journals The Effect Of Carbon Concentration On The Retained Austenite Content And The Mechanical Properties Of TRIP Steel Wire Rod Obtained From The Stelmor Controlled Cooling Line

2015 ◽  
Vol 60 (3) ◽  
pp. 1949-1952
Author(s):  
Z. Muskalski ◽  
S. Wiewiórowska
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Carbon Concentration ◽  
Retained Austenite ◽  
Steel Wire ◽  
Controlled Cooling ◽  
Two Stage ◽  
Wire Rod ◽  
Austenite Content ◽  
Stage Heat Treatment

Abstract The austenite content of the multiphase TRIP-structure steels depends, inter alia, on the carbon concentration and the properly selected parameters of the two-stage heat treatment. Under the existing industrial conditions, it is possible to (approximately) reproduce approximately the optimal parameters of the two-stage wire rod heat treatment via the controlled wire rod cooling from the end temperature of rolling on the Stelmor line. The investigation of the retained austenite content of TRIP wire rods with a varying carbon concentration, produced under industrial conditions, has been discussed and the effect of the multiphase structure of these wire rods on their mechanical properties has been determined in the paper.

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