scholarly journals THE EFFECT OF COMPOSITION ON CRYSTALLIZATION TEMPERATURE OF Fe-BASE AMORPHOUS ALLOYS

1987 ◽  
Vol 36 (4) ◽  
pp. 483
Author(s):  
CHE GUANG-CAN ◽  
SHEN BAO-GEN ◽  
ZHAO JIAN-GAO ◽  
ZHAN WEN-SHAN ◽  
LIANG JING-KUI
Keyword(s):  
Crystallization Temperature ◽  
Amorphous Alloys

scholarly journals Oxidation Behavior of Zr-based Amorphous Alloys at 400˚- 450˚C in Air

2019 ◽  
Vol 6 (1) ◽  
pp. 24
Author(s):  
Triwikantoro Triwikantoro ◽  
Romdhoni Graha Pribadi ◽  
Fatimatul Munawaroh
Keyword(s):  
Crystallization Temperature ◽  
Amorphous Alloys ◽  
Oxidation Behavior ◽  
Intermetallic Phase ◽  
Isothermal Oxidation ◽  
Thermo Gravimetric ◽  
Parabolic Law ◽  
Thermo Gravimetric Analyzer ◽  
Kinetics Of ◽  
Dominant Phase

<em><span lang="EN-US">The study of oxidation behavior of amorphous alloys based on Zirconium with 2 variations in composition was carried out: Zr<sub>64.5</sub>Cu<sub>17</sub>Ni<sub>11</sub>Al<sub>7.5 </sub>and Zr<sub>69.5</sub>Cu<sub>12</sub>Ni<sub>11</sub>Al<sub>7.5 </sub>at temperatures of 400 - 450˚C in air. Amorphous Zr-based alloys were thermally characterized using Differential Scanning Calorimeter (DSC) to determine the crystallization temperature and glass transition temperature. The oxidation characterization was carried out using a Thermo gravimetric Analyzer (TGA) at temperatures of 400, 425, and 450˚C for 4 hours in air. The phase analysis of the oxidation product was identified using X-Ra</span><span>y Diffaction</span><span lang="EN-US"> (XRD). Based on DSC data the crystallization temperature for Zr<sub>64.5</sub>Cu<sub>17</sub>Ni<sub>11</sub>Al<sub>7.5</sub> and Zr<sub>69.5</sub>Cu<sub>12</sub>Ni<sub>11</sub>Al<sub>7.5 </sub>is 426 and 442˚C respectively. The oxidation kinetics of the two alloys follow parabolic law and the oxidation rate increases with the addition of temperature. Oxides formed during isothermal oxidation in the Zr<sub>64.5</sub>Cu<sub>17</sub>Ni<sub>11</sub>Al<sub>7.5 </sub>and Zr<sub>69.5</sub>Cu<sub>12</sub>Ni<sub>11</sub>Al<sub>7.5</sub> alloys are t-ZrO<sub>2</sub> (tetragonal) as the dominant phase and ZrO<sub>2</sub> (monoclinic) and CuO as the minor phase. The intermetallic phase is also formed in both samples, t-Zr<sub>2</sub>Ni and Zr<sub>2</sub>Cu.</span></em>

Magnetic moment, Curie temperature and crystallization temperature of amorphous alloys of the type Fe-TM-B

1991 ◽  
Vol 94 (3) ◽  
pp. 243-246 ◽  
Author(s):  
W. Dudek ◽  
J. Gwiazda ◽  
E. Mariańska ◽  
R. Moskalewicz ◽  
J. Oleniacz ◽  
...  
Keyword(s):  
Curie Temperature ◽  
Magnetic Moment ◽  
Crystallization Temperature ◽  
Amorphous Alloys

scholarly journals EFFECT OF COMPOSITION AND TRANSITION METALS ON CRYSTALLIZATION TEMPERATURE OF Fe-Zr-BASED AMORPHOUS ALLOYS

1990 ◽  
Vol 39 (9) ◽  
pp. 1488
Author(s):  
SHEN BAO-GEN ◽  
WO FENG ◽  
YANG LIN-YUAN ◽  
ZHAO JIAN-GAO ◽  
GUO HUI-QUN ◽  
...  
Keyword(s):  
Transition Metals ◽  
Crystallization Temperature ◽  
Amorphous Alloys

scholarly journals Crystallization Temperature and Hardness of New Chromium-Based Amorphous Alloys

1979 ◽  
Vol 20 (5) ◽  
pp. 255-262 ◽  
Author(s):  
Akihisa Inoue ◽  
Shuzi Sakai ◽  
Hisamichi Kimura ◽  
Tsuyoshi Masumoto
Keyword(s):  
Crystallization Temperature ◽  
Amorphous Alloys

Thermodynamic Predictions of Phase Stability and Crystallization Temperature of Silicon-Based Amorphous Alloys

1993 ◽  
Vol 297 ◽  
Author(s):  
J.R.A. Carlsson ◽  
X.H. Li ◽  
S.F. Gong ◽  
H.T.G. Hentzell
Keyword(s):  
Free Energy ◽  
Phase Stability ◽  
Crystallization Temperature ◽  
Amorphous Alloys ◽  
Thermodynamic Calculation ◽  
Experimental Results ◽  
Group Iii ◽  
Silicon Based

A thermodynamic calculation of Si-X alloys has been carried out, where X is any element from group III or V. Free-energy diagrams for those systems have been established. A comparison between thermodynamic predictions and experimental results is carried out for the Si-B and the Si-Sb alloys. It is found that the agreement between theory and experimental results for the free- energy diagrams and for the crystallization temperature predictions are good. The model and the different features for the various elements are described in detail.

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