Y.F. Wang
,
J.M. Wang
,
C.B. Jiang
,
H.B. Xu*
金属学报(英文版)
A statistical work has been done to collect the composition ranges of Ni-Mn-Ga alloys exhibiting different structures and martensite start temperature (Ms), large magnetostrain or the co-existence of magnetic and structural transitions. The alloys with five-layered (5M), seven-layered (7M) modulated and non-modulated (T) martensitic structures were mapped in the graph. An empirical formula has been presented to reflect the effect of elements nickel (Ni), manganese (Mn) and gallium (Ga), on the martensite start temperature (Ms). The martensitic structure is sensitive to the composition and the martensitic transformation temperature is most drastically affected by the Ni content. The alloys with large magnetostrain or co-existence effect of the magnetic and structural transitions were also listed in a limited area.
关键词:
Ni2MnGa alloy
,
null
,
null
D.M. Xie
,
J.M. Hu
,
J.M. Wang
金属学报(英文版)
This paper discussed the possibility of obtaining electrochemical impedance spec-troscopy (EIS) responses of zinc rich paints (ZRP) using serial double-cell (SDC).The influence of counter electrode was outlined. An equivalent circuit (EC) for thedouble-cell was then discussed. The relationship between EC, the time constant, theparameters in EC of SDC and those of two single cells was also discussed. The resultsgained by serial double cell test are consistent with those of single cell test. It can beconcluded that double cell test method can be used to study ZRP completely.
关键词:
serial double-cell
,
null
,
null
,
null
