A thick platinum metal layer was deposited on ceramics using electroless- and electro-plating. The ceramics, which consist of ZrO
2, Al
2O
3, SiO
2, Na
2O, and other oxides, were etched in HF solution, and then immersed in a platinum electroless plating solution containing Pt(NH
3)
2(NO
2)
2 and N
2H
4 as a reducing regent. The mass of the ceramics specimen decreased slightly with the electroless plating time and then increased at a rate depending on temperature, but independent of Pt
2+ concentration. A2μm thick platinum layer could be deposited uniformly on ceramics by electroless plating for 14.4ks at 323K. Electroplating of platinum in Pt(NH
3)
2(NO
2)
2 solution after electroless plating caused the formation of a platinum layer as think as several tens of microns, and many cracks were formed on the platinum layer after a long period of electroplating.
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