Structural Characterization and Wear Investigations of Palladium Layers Electrochemically Deposited Using Ionic Liquids
Structural Characterization and Wear Investigations of Palladium Layers Electrochemically Deposited Using Ionic Liquids
复制标题
使用离子液体电化学沉积的钯层的结构表征和磨损研究
DOI:
10.1002/adem.201300117
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发表时间:
2013
影响因子:
3.6
通讯作者:
T. Lampke
中科院分区:
文献类型:
--
作者:
T. Mehner;D. Nickel;S. Nehrkorn;G. Lanzinger;R. Böck;T. Lampke
Noble-metal coatings provide an excellent chemical and oxidation resistance in combination with good electrical properties that make them an interesting material for many applications such as different kinds of electrical contacts. Especially for separable connectors, good wear resistance is required. Owing to cost limitations, Au and Pt have to be replaced with lower-priced metals with similar properties. Pd is an appropriate alternative; its price is less than half of that of Au. Therefore, the importance of Pd as contact material is increasing.[1]Thin Pd layers can be deposited electrochemically; several electrolytes are known.[eg 2] Up to now, Pd layers have been deposited using aqueous electrolytes, because of easy handling and relatively low costs. However, the undesirable codeposition of hydrogen is a major drawback leading to hydrogen-induced embrittlement (HIE) with possible spalling of the layer. This limits the Pd layer thickness to< 2.5 mm, because high residual stresses (up to 700MPa) occur.[2, 3] Especially for security-relevant applications, eg automobiles, it is crucial to avoid the related component fatigue. For automotive purposes, plug contacts in engine compartments have to withstand temperatures above 150 C and high vibration loads (ie wear stress). At the same time, the mileage of engines has to exceed 240 000 km. An interesting alternative deposition technique is the aprotic electrochemical deposition with the help of ionic liquids (IL). Using IL, HIE can be avoided due to the absence of acidic hydrogen. IL can already be applied for depositions of several materials–pure metals and alloys, eg Al, Cu, Cu-Mn, Cr, Fe or Pd-Au.[4–9]
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DOI:
10.1179/0020296713z.00000000097
发表时间:
2013-05
期刊:
Transactions of the IMF
影响因子:
--
作者:
G Lanzinger-;R. Böck;R. Freudenberger;T. Mehner;I. Scharf;T. Lampke
通讯作者:
G Lanzinger-;R. Böck;R. Freudenberger;T. Mehner;I. Scharf;T. Lampke
影响因子:
4.5
作者:
I. Sun;C. Hussey
通讯作者:
C. Hussey
影响因子:
3.9
作者:
H. Long;J. Wilkes;R. T. Carlin
通讯作者:
R. T. Carlin
影响因子:
3.9
作者:
F. Su;Jing;I. Sun
通讯作者:
I. Sun
影响因子:
8.6
作者:
R. Birringer;M. Hoffmann;P. Zimmer
通讯作者:
P. Zimmer