Thermal analysis method for measuring glass transition temperature of amorphous alloy

A glass transition and amorphous alloy technology, applied in the field of amorphous alloy and thermal analysis testing, can solve the problems of single function and narrow application area, and achieve the effect of overcoming data dispersion and great application prospects
CN101504382AInactive Publication Date: 2009-08-12GUANGDONG UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GUANGDONG UNIV OF TECH
Publication Date
2009-08-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a thermal analysis method for measuring glass transition temperature of amorphous alloy. A determination method based on differential scanning calorimetry (hereinafter shortened as DSC) or differential thermal analysis (hereinafter shortened as DTA) adopts a DSC or DTA thermal analyser to establish a heat flux (temperature difference)-temperature curve of alloy and further evaluate a heat flux (temperature difference) change rate-temperature curve, thereby evaluating the reference temperature range of glass transition; and a maximum slope method is used to determine the glass transition temperature Tig or Teg within the analysis temperature range determined by the reference temperature range. The thermal analysis method adopts the DSC or DTA thermal analyser to finish the test, overcomes the disadvantages of poor accuracy and repetitiveness of an ordinary DSC or DTA method, is far popular than the application of special instruments such as a dilatometer and the like, and is particularly suitable for on-spot quality detection in production process.
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Description

technical field

[0001] The invention relates to two fields of amorphous alloy and thermal analysis testing technology, in particular to a thermal analysis method for measuring glass transition temperature of amorphous alloy. Background technique

[0002] Amorphous alloys have good comprehensive mechanical properties and unique physical and chemical properties, and have broad application prospects in the future. Glass transition temperature T g It is one of the important indicators to measure the thermal stability of the alloy.

[0003] There are currently two ways to measure T g The first is the thermal analysis method based on differential scanning calorimeter (hereinafter abbreviated as DSC) and differential thermal analyzer (hereinafter referred to as DTA). The baseline on the DTA curve changes, and this region corresponds to the glass transition process of the alloy. The degree of change of the baseline of different alloy systems is very different, and the degree of ...

Claims

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