Density and specific heat of zirconium and zirconium alloys
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Zircon is sometimes confused with cubic Zirconia, a synthetic, inexpensive diamond simulant. Adinacati two substances are entirely independent and have no connection with each other except that they both contain the element zirconium in its chemical structure.
Annually produces about 7,000 tonnes of zirconium. The zirconium combines with the silicate to produce a natural semi-precious zircon jewel. Zirconium in combination with dioxide creates a cubic Zirconia, which is commonly used as a substitute for diamonds.
Zirconium has a very low toxicity, and is estimated that people consume about 50 micrograms (with 1.8 x 10−6 oz) a day, most of which passes through the digestive system without being absorbed. The human body consists of approximately 0.000001 percent of zirconium.
The use of lithium zirconate can be useful for the absorption of carbon dioxide in the atmosphere. Rocks containing zircon, discovered in Australia in 2000 was dated to 4.4 billion years, and the ratio of isotopes of oxygen (O16 / O18) showed that life began on Earth nearly 500 million years earlier than previously thought,
Powder of zirconium can spontaneously ignite in air. Because of this, the properties of the powdery Zirconia is sometimes used in explosive devices. according to
The zirconium powder can cause eye irritation for short-term exposure and may be harmful to lungs through prolonged or repeated exposure.
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The main uses of zirconium
Due to the high resistance against corrosion and durability, zirconium is present in several compounds in various medicinal purposes. The use of zirconium compounds in medicine began in 1969, when it was used for the manufacture of dental prostheses. Prosthetic zirconium (ZrO2) was developed as an alternative to titanium, steel and aluminum, and it has been shown that they are more stable and have better biocompatibility. About 300,000 patients over the past four decades with prosthetics Zirconia did not Express negative feedback.
Zirconium is also widely used in dental restorations, which usually stabiliziruemost yttrium (ZrO2 Y2 O3). The compound yttrium-zirconium has many advantages over other materials: it is more compatible with the human body, has twice the bending strength and four times compression resistance (compared to steel). Cubic Zirconia also has a higher resistant to acid bases, found in many foods.
New ideas are the use of zirconium alloys in the medical field include a patent filed in 1999 by James Davidson and Lee Tuneberg, American inventors.
They describe the alloy containing niobium, titanium, zirconium and molybdenum (NbTiZrMo) and its advantages for dental and other medical devices. Zirconium in the alloy provides higher mechanical properties and also lowers the melting point (along with titanium), additional stabilization, and improved corrosion resistance.
In another patent, published by Shuichi Miyazaki, Heeyoung Kim and Yosuke Sato, Japanese scientists, in 2012, describes an alloy of zirconium, which has super elastic properties that can be used in biological and medical fields. Zirconium alloyed with titanium, niobium or tin, or aluminium, or both. The alloy is similar to the elasticity of human bones,
In accordance with the values specified by young’s modulus, this makes it an ideal material for use inside the human body, including artificial bones, joints and teeth as well as orthodontic wires, stents, bone plates and other medical implants.
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