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Phase Selection of YAG Melt under Containerless Solidification Condition
Ma Xiaoguang1,2; Li Jianqiang1; Peng Zhijian2; Ma Bingqian1; Pan Wei3; Qi Longhao3
AbstractRare earth elements doped yttrium aluminum garnet (YAG) transparent ceramics are technologically important laser host materials. Containerless solidification-controlled crystallization (CSCC) solution is a promising new technology for preparation of YAG transparent ceramic because of its advantages of simple process and mild condition. However, the mechanism of phase selection of YAG melt under containerless solidification condition is not clear. The containerless solidification of garnet Y3Al5O12 (YAG) was carried out using the aerodynamic levitation method at different cooling rates. The metastable YAlO3 perovskite (YAP) and subsequent YAP+Al2O3 eutectic were formed when the melts of YAG solidified at the cooling rates of 4 K/s. The samples contained both the metastable YAP/Al2O3 and stable YAG phase were obtained by increasing the cooling rate to 13 K/s. When the cooling rates increased to about 53 K/s, the YAG melts formed into monophasic YAG. At the cooling rate of about 250 Kis, the glass-ceramics was successively obtained without recalescence. The glass transition temperature T-g and crystallization temperature T-x were 880 degrees C and 910 degrees C respectively. XRD results indicate that the glass-ceramics contains metastable YAP and YAG.
KeywordYag Containerless Solidification Aerodynamic Levitation Method Phase Selection
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000367214200016
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Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China
2.China Univ Geosci, Beijing 100083, Peoples R China
3.Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
Recommended Citation
GB/T 7714
Ma Xiaoguang,Li Jianqiang,Peng Zhijian,et al. Phase Selection of YAG Melt under Containerless Solidification Condition[J]. RARE METAL MATERIALS AND ENGINEERING,2015,44(S1):60-64.
APA Ma Xiaoguang,Li Jianqiang,Peng Zhijian,Ma Bingqian,Pan Wei,&Qi Longhao.(2015).Phase Selection of YAG Melt under Containerless Solidification Condition.RARE METAL MATERIALS AND ENGINEERING,44(S1),60-64.
MLA Ma Xiaoguang,et al."Phase Selection of YAG Melt under Containerless Solidification Condition".RARE METAL MATERIALS AND ENGINEERING 44.S1(2015):60-64.
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YAG熔体无容器凝固条件下相选择机制的研(2945KB)期刊论文出版稿限制开放CC BY-NC-SAApplication Full Text
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