Tensile Behavior of Tetragonal Zirconia Micro/Nano-Fibers and Beams In-Situ Tested in Push-to-Pull Devices

2021 ◽  
Author(s):  
Xiaomei Zeng ◽  
Pengcheng Ye ◽  
Zehui Du ◽  
Chee Lip Gan
2016 ◽  
Vol 840 ◽  
pp. 375-380
Author(s):  
Meor Yusoff Meor Sulaiman ◽  
Khaironie Mohamed Takip ◽  
Ahmad Khairulikram Zahari

The high temperature phase transition of zirconia produced from commercial zirconyl chloride chemical was compared with that produced from a Malaysian zircon mineral. Zirconyl chloride was produced from zircon by using the hydrothermal fusion method. Initial XRD diffractogram of these samples at room temperature show that they are of amorphous structure. High temperature XRD studies was then performed on these samples; heated up to 1500°C. The XRD diffractograms shows that the crystalline structure of tetragonal zirconia was first observed and the monoclinic zirconia becomes more visible at higher heating temperature.


2001 ◽  
Vol 11 (4) ◽  
pp. 1092-1095 ◽  
Author(s):  
HuaZhang Zhai ◽  
JianBao Li ◽  
ShuXia Zhang ◽  
YongJun Chen ◽  
Bo Zhang

1997 ◽  
Vol 51 (8) ◽  
pp. 1224-1228 ◽  
Author(s):  
Masatomo Yashima ◽  
Masato Kakihana ◽  
Ryosuke Shimidzu ◽  
Hirotaka Fujimori ◽  
Masahiro Yoshimura

A new ultraviolet (UV) Raman spectroscopic system to measure the Raman scattering from materials at high temperatures up to 1500 °C has been designed. This system is based on a CW (continuous-wave) ultraviolet argon-ion laser (363.8 nm), a spatial filter, a single monochromator coupled to a double-grating rejection filter, and a two-dimensional charge-coupled device (CCD) detector. The plasma lines from the laser are almost completely rejected by a Pellin—Broca prism combined with apertures. In situ Raman measurements for a zirconia (ZrO2) specimen at various high temperatures have been performed by using the UV excitation as well as the conventional visible 488.0-nm excitation for comparison. In the case of visible excitation, thermal emission obstructs the observation of the Raman scattering from zirconia even at 900 °C; it becomes rapidly pronounced between 900 and 1100 °C, and finally it is impossible to observe Raman spectra at temperatures higher than 1200 °C. In sharp contrast to the visible excitation, the UV excitation provides good-quality Raman spectra with practically flat backgrounds for the Raman signal of tetragonal zirconia in the spectral region of 20–1100 cm−1 even at 1500 °C, and it enables clear observation of the monoclinic-tetragonal phase transformation of zirconia occurring between 1100 and 1200 °C.


2016 ◽  
Vol 65 (7) ◽  
pp. 596-604 ◽  
Author(s):  
Ali Al-Ahmad ◽  
Lamprini Karygianni ◽  
Max Schulze Wartenhorst ◽  
Maria Bächle ◽  
Elmar Hellwig ◽  
...  

2020 ◽  
Vol 189 ◽  
pp. 93-104 ◽  
Author(s):  
Dingchang Zhang ◽  
Leyun Wang ◽  
Huan Zhang ◽  
Alireza Maldar ◽  
Gaoming Zhu ◽  
...  

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