DONG Zhili
,
MA Jusheng
,
TANG Xiangyun
,
YOU Liang Tsinghua University
,
Beijing
,
China lecturer Department of Materials Science and Engineering
,
Tsinghua University
,
Beijing 100084
,
China
金属学报(英文版)
The oxidation rate,the growth,morphology and structure of oxide scale and whiskers for Fe-Ni-Cr sealing alloys in H_2-H_2O atmosphere at high temperatures have been studied. The growth rate of scale is controlled by diffusion.The scale is composed of Cr_2O_3 and spinel(Fe,Mn)O·Cr_2O_3 and the oxide ...
关键词:
oxidation
,
null
,
null
,
null
Y Huang
,
H.N Hao
,
Y.L. Chen and B.L.Zhou (1)Department of Materials Science and Engineering
,
Tsinghua University
,
Beijing 100084
,
China 2)Institute of Metal Research
,
Chinese Academy of Sciences
,
Shenyang 110015
,
China Manuscript received 26 August 1996)
金属学报(英文版)
A new way of designing and preparing silicon nitride ceramic composite with high fracture toughness and nacre structure has been proposed. To mimic the laminated structure of nacre, Si_3N_4 matrix ceramic layer can be obtained through compacting rolling method. To mimic the secondary toughening of n...
关键词:
:secondary toughening
,
null
,
null
,
null
JIANG Hai TAO Kun LI Hengde Tsinghua University
,
Beijing
,
China lecturer
,
Department of Materials Science and Engineering
,
Tsinghua University
,
Beijing 100084
,
China
金属学报(英文版)
BN films,synthesized by ion beam assisted deposition,were analysed by RBS,AES, IR spectra and TEM.Formatiom of c-BN phase was shown not only by IR spectra at absorption peak of 1100 cm~(-1),but also by electron diffraction pattern.The results of AES demonstrate an effect of N~+ implantation near the...
关键词:
ion beam assisted deposition
,
null
YU Jingfen LIU Difei Tsinghua University
,
Beijing
,
China professor
,
Dept.of Chemical Engineering
,
Tsinghua University
,
Beijing 100084
,
China
金属学报(英文版)
The thermodynamics of micella formation,interfacial characteristics,synergistic effects and interfacial kinetics for synergistic extraction system D_2 EHPA-MPA-Fe~(3+) have been studied.It was found that D_2EHPA in the mixed system strongly exhibits the effect on the micella formation thermodynamics...
关键词:
interfacial chemistry
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null
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null
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null