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Tungsten Oxide Surface Coating Makes Steel Stronger And More Durable I

Details: Category: Tungsten's News; Published on Friday, 20 November 2015 15:17; Written by xinyi; Hits: 571

A newly made surface coating for steel can make it stronger and more resistant to rust and corrosion, according to its developers.

Scientists from Harvard's John A. Paulson School of Engineering and Applied Sciences (SEAS) were able to create a surface coating for steel that not only repels corrosion but also makes the metal stronger.

"Our (coating material) is...more durable than any anti-fouling material that has been developed before," said Joanna Aizenberg, a core member of the Wyss Institute for Biologically Inspired Engineering at Harvard University.

Aizenberg and her team developed a new surface coating made from rough, nanoporous tungsten oxide. It was found to be the most durable, anti-corrosive and anti-fouling coating material to date, tried and tested to resist rust and repel any kind of liquid even after the coated metal has sustained considerable structural damage.

The team tested the coating's durability by scratching with stainless steel tweezers, diamond-tipped scribers, screwdrivers and beating it hard, heavy beads.

Anti-wetting properties were tested by soaking the metals on various liquids like oil, water, blood and corrosive chemicals.

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New Report Sheds Light on the Sodium Tungstate Sales Global Market

Details: Category: Tungsten's News; Published on Friday, 20 November 2015 15:09; Written by xinyi; Hits: 517

The report focuses on global major leading companies providing information such as company profiles, sales, sales revenue, market share and contact information. Then the Sodium Tungstate OEM market and Sodium Tungstate production market status is discussed.

The report provides a basic overview of the Sodium Tungstate industry including definitions, classifications, applications and industry chain structure.

Development policies and plans are discussed as well as manufacturing processes and cost structures are also analyzed. This report also states import/export consumption, supply and demand figures, cost, price, revenue and gross margins.

The report then analyzes the global Sodium Tungstate market size (volume and value), and the sales segment market is also discussed by product type, application and region.

The major Sodium Tungstate market (including USA, Europe, China, Japan,.) is analyzed, data including: market size, import and export, sale segment market by product type and application. Then we forecast the 2016-2021 market size of Sodium Tungstate.

Finally the marketing, feasibility of new investment projects are assessed and overall research conclusions offered.

With 183 tables and figures the report provides key statistics on the state of the industry and is a valuable source of guidance and direction for companies and individuals interested in the market.

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New Detectors Allow Search for Lightweight Dark Matter Particles

Details: Category: Tungsten's News; Published on Tuesday, 17 November 2015 17:58; Written by xinyi; Hits: 659

The central part of all CRESST detectors is a crystal of calcium tungstate. When a particle hits one of the three crystal atoms (calcium, tungsten, and oxygen), the detectors simultaneously measure energy and light signals from the collision that deliver information about the nature of the impinging particle.

In order to catch even the smallest possible temperature and light signals, the detector modules are cooled to near absolute zero (-273.15 degrees C). To eliminate disturbing background events, the CRESST scientists employ - for one thing - materials with little natural radioactivity. In addition, the experiment stands in the world's largest underground laboratory, in the Italian mountain Gran Sasso, and thus is largely shielded from cosmic rays.

The Earth, planets, stars, and galaxies form only the visible portion of the matter in the universe. Greater by far is the share accounted for by invisible "dark matter". Scientists have searched for the particles of dark matter in numerous experiments - so far, in vain. With the CRESST experiment, now the search radius can be considerably expanded: The CRESST detectors are being overhauled and are then able to detect particles whose mass lies below the current measurement range. As a consequence, the chance of tracking dark matter down goes up.

Theoretical models and astrophysical observations leave hardly any doubt that dark matter exists: Its share is five times more than all visible material. "So far a likely candidate for the dark matter particle was thought to be a heavy particle, the so-called WIMP," explains Dr. Federica Petricca, a researcher at the Max Planck Institute for Physics and spokesperson of the CRESST experiment (Cryogenic Rare Event Search with Superconducting Thermometers). "Most current experiments therefore probe a measurement range between 10 and 1000 GeV/c^2."

The current lower limit of 10 GeV/c^2 (GeV: gigaelectronvolt; c: speed of light) roughly corresponds to the mass of a carbon atom. However, recently various new theoretical models have been developed with the potential of solving long-standing problems, like the difference between the simulated and the observed dark matter profile in galaxies. Several of theses models hint towards dark matter candidates below the mass of the traditional WIMP.

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Commodity Index of Ammonium Paratungstate is 33.62 on November 12

Details: Category: Tungsten's News; Published on Wednesday, 18 November 2015 17:34; Written by xinyi; Hits: 873

Commodity Index of Ammonium Paratungstate is 33.62 on November 12, unchanged from yesterday, which make a historical new low record in cycle, compared with the highest point of 100.00 points on September 1, 2011 decreased by 66.38%.

Date	08-19	08-28	09-06	09-15	09-24	10-03	10-12	10-21	10-30	11-08	11-17
Commodity Index	44.89	43.83	43.40	43.06	42.64	42.30	41.45	38.38	37.73	37.02	33.62

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Wolf Minerals' Boss Confident of Tungsten Price Rebound

Details: Category: Tungsten's News; Published on Tuesday, 17 November 2015 17:40; Written by xinyi; Hits: 720

Wolf Minerals’ boss expects more casualties among rival tungsten producers unless the price of the heavy metal improves substantially, he told investors today.

A number of private tungsten mines in China have shut, while another big tungsten mine in Canada, Cantung, run by North American Tungsten, was closed last month.

China remains the main source of tungsten production globally but state-owned enterprises are cutting back.

The tungsten price needs to recover to at least US$30,000 per tonne from around US$17,000 currently for these producers to remain profitable warned Russell Clark, though he’s not concerned.

Wolf only opened the Drakelands mine, a £140 mln tungsten mine on the fringes of Dartmoor, Devon, in September, but he remains confident on the project’s future.

“Everyone is hurting at these prices,” he said, “but we remain comfortable that they are not sustainable.”

“The silver lining,” he said, “is that while the price is what it is, you won’t see any more mines or projects coming online.”

Clark reckons the price will rebound, as demand remains strong and supply is slowing down, but he’s not resting on his laurels.

He said Wolf will continue to cut costs where possible once the ramp-up phase of the mine has been completed and until the market come out of “the doldrums”.

When the company first commissioned the project the tungsten price was around US$35,000, per tonne.

Shares were 3.5% higher to almost 13p.

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