ฉันแปลประโยคยาวๆไม่ค่อThermal stability has been investigated by DSC and in-situ XRD
and thermo processability has been studied by thermo-mechanical
analysis (TMA).
The thermal properties of the BMGs were determined using
DSC, which was conducted at a heating rate of 20 K/min using a
standard commercial instrument (Pekin Elmer, DSC-7) under high
purity dry nitrogen at a flow rate of 20 ml/min. To ensure the
reliability of the data, a temperature calibration was performed
before conducting the experiments with indium and zinc standard
specimens, giving an accuracy of ±0.2 K and ±0.02 mW, respectively.
The characteristic temperatures can be obtained: the glass
transition temperature (Tg), the temperature corresponding to the
onset of the crystallization (Tx) and then the supercooled liquid
temperature region (DTx ¼ Tx Tg).
The amorphous nature of the BMGswas characterized by XRD at
room temperature. The XRD equipment was a qq Bruker D8
Advance system (Germany) using Cu Ka radiation (l ¼ 0.1540 nm).
The working voltage of the instrument was 40 kV and the current
was 40 mA. The intensity data were collected by a linear detector
(LynxEye).
Kinetics of crystallization were studied by high temperature Xray
diffractometry (HTXRD). The in-situ experiments were performed
using an Anton Paar HTK 1200 oven chamber, under a high
vacuum. The initial heating was carried out with a heating rate of
20 K/min. The sample was kept at constant temperature and the Xray
measurements were started after a holding time of 10 s, in the
2q region of 28e52. Spectra are registered either duringยออก...ต้องใช้เวลา..เพราะฉันไม่เก่งภาษาอังกฤษ