The behavior and effect of rare earth CeO2 on in-situ TiC/Al composite

2004 ◽  
Vol 35 (8) ◽  
pp. 2511-2515 ◽  
Author(s):  
Youming Liu ◽  
Wenyi Li ◽  
Xun Cai ◽  
Liuhe Li ◽  
Qiulong Chen ◽  
...  
Keyword(s):  
2004 ◽  
Vol 58 (3-4) ◽  
pp. 432-436 ◽  
Author(s):  
Youming Liu ◽  
Bofan Xu ◽  
Wenyi Li ◽  
Xun Cai ◽  
Zhengwei Yang

2014 ◽  
Vol 989-994 ◽  
pp. 320-324
Author(s):  
Huan Long Yuan ◽  
Ze Hua Zhou ◽  
Ze Hua Wang ◽  
Zhao Jun Zhong ◽  
Xin Zhang ◽  
...  

Formation mechanism of TiC in Al matrix at a rather low melting temperature using in situ technology was studied. And effect of the melting temperature on the microstructure of in-situ TiC/Al composite was investigated. The results indicate that, the resultants of TiC and Al3Ti were found out in the matrix; however, no evidence showed that Al4C3, a resultant phase existed probably in TiC/Al composite in accordance with the relative reference, was found out. Compared to the sample of T750, more TiC and less Al3Ti existed in the sample of T850, and morphography of Al3Ti changed from block to bar with the increasing melting temperature. The melting temperature affected extremely the reaction speed and the resultants.


2019 ◽  
Vol 21 (11) ◽  
pp. 1900378
Author(s):  
Chongchao Li ◽  
Chunxiang Cui ◽  
Xin Wang ◽  
Lichen Zhao ◽  
Shuiqing Liu ◽  
...  
Keyword(s):  

2011 ◽  
Vol 32 (10) ◽  
pp. 4999-5003 ◽  
Author(s):  
Qianlin Wu ◽  
Caiding Yang ◽  
Feng Xue ◽  
Yangshan Sun

2011 ◽  
Vol 286 (1-2) ◽  
pp. 32-47 ◽  
Author(s):  
Christopher M. Fisher ◽  
John M. Hanchar ◽  
Scott D. Samson ◽  
Bruno Dhuime ◽  
Janne Blichert-Toft ◽  
...  

2021 ◽  
Vol 13 (8) ◽  
pp. 4591
Author(s):  
Shuanglei Huang ◽  
Daishe Wu

The tremendous input of ammonium and rare earth element (REE) ions released by the enormous consumption of (NH4)2SO4 in in situ leaching for ion-adsorption RE mining caused serious ground and surface water contamination. Anaerobic ammonium oxidation (anammox) was a sustainable in situ technology that can reduce this nitrogen pollution. In this research, in situ, semi in situ, and ex situ method of inoculation that included low-concentration (0.02 mg·L−1) and high-concentration (0.10 mg·L−1) lanthanum (La)(III) were adopted to explore effective start-up strategies for starting up anammox reactors seeded with activated sludge and anammox sludge. The reactors were refrigerated for 30 days at 4 °C to investigate the effects of La(III) during a period of low-temperature. The results showed that the in situ and semi in situ enrichment strategies with the addition of La(III) at a low-concentration La(III) addition (0.02 mg·L−1) reduced the length of time required to reactivate the sludge until it reached a state of stable anammox activity and high nitrogen removal efficiency by 60–71 days. The addition of La(III) promoted the formation of sludge floc with a compact structure that enabled it to resist the adverse effects of low temperature and so to maintain a high abundance of AnAOB and microbacterial community diversity of sludge during refrigeration period. The addition of La(III) at a high concentration caused the cellular percentage of AnAOB to decrease from 54.60 ± 6.19% to 17.35 ± 6.69% during the enrichment and reduced nitrogen removal efficiency to an unrecoverable level to post-refrigeration.


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