Laser & Optoelectronics Progress, Volume. 47, Issue 4, 41602(2010)
Influence on Spectral Characteristics of Purple Jade by Heat Treatment
Purple jade sample was tested before and after heat treatment under oxidational atmosphere with X-ray diffractometer(XRD),ultraviolet visible (UV-VIS) absorption spectrosmeter and Raman spectrometer. XRD analysis results show that the major components of the sample are jadeite. The sample UV-VIS absorption spectra before and after heat treatment shows that after heat treatment the spikes at 437 nm and 580 nm almost disappear,while Raman spectra of purple jade brown section after heat treatment shows that the baseline presents rising trend. According to the above analysis,the following conclusion is drawn:the main color-causing ion is Fe2+,while Fe2+ changes to Fe3+after heat treatment and Fe2O3 is formed. Therefore the sample of purple jade shows brown after the heat treatment.
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Chen Chen, Guo Shouguo, Mao Jian. Influence on Spectral Characteristics of Purple Jade by Heat Treatment[J]. Laser & Optoelectronics Progress, 2010, 47(4): 41602
Category: Materials
Received: Nov. 5, 2009
Accepted: --
Published Online: Mar. 25, 2010
The Author Email: Chen Chen (huoqiuchenchen@163.com)