Restoration of ancient bronze bells: Part I: powder metallurgy
نویسندگان
چکیده
منابع مشابه
(Bells: physics and music cast in bronze)
Os sinos são instrumentos de percussão, da famı́lia dos idiófonos. São dispositivos de produção de som apenas aparentemente simples. O seu corpo é constitúıdo de uma liga metálica chamada bronze, que é uma combinação de cobre e estanho em proporções que podem sofrer ligeiras variações. No interior do sino encontra-se o badalo um pêndulo que, quando oscila, atinge o corpo fazendo com que o sino s...
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Ancient Chinese music bells can be traced back to the Shang dynasty (1600–1100 B.C.). In addition to their significance in history and metallurgy, they provide much insight into the design of musical instruments in the early years and continue to make important contribution to acoustics due to their unique acoustical properties and rich physical mechanisms. These music bells differ from carillo...
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Near-stoichiometric NiTi was foamed in the solid state at elevated temperatures through creep expansion of highpressure argon pores previously entrapped during powder consolidation. A sample with 17% porosity was found to be superelastic up to a compressive stress of 800 MPa.
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detail exactly how sparse medical care was in Scotland. Even if it were available, the authors show that the stringency of the Scottish Poor Law may have denied access to it. One of their tables (9.B) "shows how much was actually spent on doctors per head of the population on the poor roll. The Scottish average was £0.0 154, or no more than 3.d per pauper per year in the old money" (p. 217). Th...
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The chemistry surrounding the pyrolysis of N,NЈ-ethylenebisstearimide (EBS) compacted with iron powder is described for the first time. Heat treatment is carried out in a 5 vol pct hydrogen atmosphere (balance nitrogen) over the 100 °C to 850 °C range. The exhaust from the furnace is monitored by Fourier transform infrared and dispersive ultraviolet absorption spectroscopy; condensable material...
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ژورنال
عنوان ژورنال: Ingeniare. Revista chilena de ingeniería
سال: 2014
ISSN: 0718-3305
DOI: 10.4067/s0718-33052014000400002