Preparation and characterization of composite tin/Chevrel phase PbMo6S8 and tin/titanium–niobium carbonitride Ti0.63Nb0.34C0.38N0.58
| Autor: | V. Rubene, I Vı̄tiņa, I Zālı̄te, O Kovaļova, M Pelēcis |
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| Rok vydání: | 1998 |
| Předmět: |
Materials science
Scanning electron microscope Composite number Metallurgy Metals and Alloys Niobium chemistry.chemical_element Surfaces and Interfaces Thermal treatment Electrochemistry Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry Phase (matter) Materials Chemistry Tin Nuclear chemistry Titanium |
| Zdroj: | Thin Solid Films. 323:23-30 |
| ISSN: | 0040-6090 |
| Popis: | The composite coatings of Sn–PbMo 6 S 8 (PbMo 6 S 8 content 28–88 wt.%), Sn–NbC x N y (NbC x N y content 10–88 wt.%) and Sn–Ti 0.63 Nb 0.34 C 0.38 N 0.58 (Ti 0.63 Nb 0.34 C 0.38 N 0.58 content 55–70 wt.%) were electrodeposited from potassium pyrophosphate Sn(IV) and Sn(II) complex salt K 8 [Sn(P 2 O 7 ) 3 ], K 6 [Sn(P 2 O 7 ) 2 ] electrolytes containing cation active organic substances alkylbenzyltrimethylammonium (I) or alkyldiethanolbenzylammonium (II) chlorides. The structure of the composite coatings was dependent on the conditions of electrodeposition, the disperse phase content and the thermal treatment was investigated by means of scanning electron microscopy. It was determined that pores or crevices which may form, depending on the conditions of electrodeposition, can be prevented by means of a thermal treatment for 4–8 h at 260, 280 and 310°C. The composite coatings of Sn–PbMo 6 S 8 obtained with a PbMo 6 S 8 content >54 wt.% are superconductive coatings. The Sn–Ti 0.63 Nb 0.34 C 0.38 N 0.58 coatings are conductive coatings. The Sn–NbC x N y coatings are corrosion resistive coatings at a temperature of 40±10°C and relative humidity of 98% The Sn–NbC x N y with NbC x N y content up to 30 wt.% are solderable coatings at a temperature of 310°C. |
| Databáze: | OpenAIRE |
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