A New Dental Superalloy System: IV. X-Ray Diffraction Analysis
نویسندگان
چکیده
منابع مشابه
A new dental superalloy system. IV. X-ray diffraction analysis.
X-ray diffraction analysis of the alloy system Co-Ni-Cr-Ta showed that the ternary alloy base consisted of three phases (a, ,8, and v-). Addition of Ta caused a decrease in the intensity of the 3 lines. Further Ta additions caused diffraction lines characteristic of the intermetallic compound a-Co3Ta. At higher Ta concentrations, the intensity of the lines characteristic of the aphase increased...
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OBJECTIVES It is important to characterize the surface of dental amalgam in order to understand the process of mercury release from amalgam restorations in the oral cavity. The mercury evaporation occurs not only from the newly made restoration but also from the set material. METHODS The surfaces of four different types of amalgams, which had been well set, were analyzed with X-ray photoelect...
متن کاملA new dental superalloy system. 3. Microstructure and phase transformations.
A microstructural study was conducted on 15 cobalt-chromium-nickel alloys of the basic composition 40 Co-30 Ni-30 Cr. The alloys were strengthened by the addition of tantalum and tantalum-rich regions were found at the interdendritic spaces. The increase in Ta concentration caused a decrease in the concentration of the a phase and an increase in the amounts of the a phase. Excessive amounts of ...
متن کاملA new dental superalloy system. II. Mechanical properties.
Theoretical considerations that lead to the design of strong and ductile cobalt (Co)base alloys were discussed in part I of this series of articles.' It was hypothesized that the composition 40 Co-30 nickel (Ni)-30 chromium (Cr) is an acceptable compromise for the requirements of an alloy base. It also was found that tantalum (Ta) may have the qualities that are acceptable for an additional ele...
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ژورنال
عنوان ژورنال: Journal of Dental Research
سال: 1973
ISSN: 0022-0345,1544-0591
DOI: 10.1177/00220345730520041701