Estimation of Corrosion Rate of Bulk and Powder Ni-Re Alloy

被引:2
|
作者
Rybalka, K. V. [1 ]
Beketaeva, L. A. [1 ]
Davydov, A. D. [1 ]
Abisheva, Z. S. [2 ]
Agapova, L. Ya. [2 ]
Kilibaeva, S. K. [2 ]
机构
[1] Russian Acad Sci, Frumkin Inst Phys Chem & Electrochem, Leninskii Pr 31, Moscow 119071, Russia
[2] Inst Met & Ore Beneficat, Ul Shevchenko 29-133, Almaty 050010, Russia
关键词
nickel-rhenium alloy; Ni85Re15 alloy powder; method of compensating additives; corrosion; CATHODIC DEPOLARIZER CONSUMPTION; CURRENT-DENSITY; RHENIUM; ELECTRODEPOSITION; CITRATE;
D O I
10.1134/S1023193518050051
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The corrosion current density of Ni-Re alloy (15.8 wt % Re) was estimated using recently developed method of compensating additives. The alloy was fabricated by the electrodeposition in the form of bulk specimen and the powder prepared of this specimen. The electrodeposition was performed in stirred 5 x 10(-3) M HCl solution. The method enabled us to determine the corrosion rate with no external polarization of studied specimens and at virtually constant pH value. A specific electrochemical activity of powder surface was estimated by comparing the corrosion currents of bulk and powder specimens. The powder was intended for testing its catalytic activity in several electrochemical reactions.
引用
收藏
页码:451 / 455
页数:5
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