Tungsten ice jigs are a hot trend on hard-water. Lure selections from manufacturers are growing, and more anglers are seeing the unique advantages tungsten provides on ice.

Small jigs that “fish heavy” are a main ingredient for many crappie ice fishing tactics. Since tungsten is much denser and approximately 30-percent heavier than lead, it gives new options for jig-size and weight combinations. This has benefits when downsizing, for instance. Tungsten also sinks faster than a similarly sized lead jig, which is an asset in deep water.

Ice-fishing guru and full-time guide, Brian “Bro” Brosdahl of Max, Minn., is well versed in the virtues of tungsten jigs for crappie. Here are 4 reasons tungsten jigs are standard in his ice fishing box:

Punch slush
Fast drop
Aggressive jigging
Great for downsizing

Punch slush
“Tungsten punches through a slushy hole nicely without needing to go to a gaudy-sized lead jig,” Brosdahl said. “This reason alone is why I use tungsten so often.”

To appreciate this statement, we must take a page from Brosdahl’s stealth fishing handbook. To Bro, slush is your friend. While most anglers scoop it out, he kicks extra slush into a freshly drilled hole. The reason: a slushy hole reduces light penetration for a more natural setting below. In contrast, a clean, slush-free hole allows a spotlight-like beam to shine in water, which can spook clear-water crappie.

The challenge is getting a small bait through the thick, icy soup. For tiny lead jigs, Brosdahl often uses a method he calls jousting. With the jig at the rod tip, he thrusts the rod into the slush to get the tiny jig below the debris before opening the bail and letting the bait sink. He’s never broke a rod, but he’s seen others snap sticks trying the method.

With tungsten, jousting is rarely needed. Average-sized tungsten jigs easily punch through slush. When the slush is extra thick, or when using a tiny tungsten jig, Bro makes a pilot hole in the slush with his Humminbird transducer.

Brosdahl admits he sometimes needs to reach in and pull a big crappie through the slush to land it. But, it’s a small hurdle and a better option than not hooking them at all.




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Tungsten trioxide at 70℃. Calcined in air at APT obtained. Blue tungsten oxide was obtained in 404 APT seven reduction with nitrogen. Purple tungsten oxide at 470℃ under a hydrogen mixed with nitrogen gas (at 81℃ saturated with water vapor) reduction obtained, another WO2. Two samples will be a stoichiometric amount of the three The mixture of tungsten and tungsten oxide at 980℃ calcination under an atmosphere of pure hydrogen synthesis, both purple tungsten oxide by x-ray diffraction and identified as pure WO_2.2. Brown tungsten oxide (WOZ) is tungsten trioxide in the manufacture of WO_2.2 reduction under reducing conditions after a long period.

1.Paratungstate reduction was due to tungsten metal powder particles may have a shape of APT, it should pay attention to the morphology of APT. We APT having nearly cubic or monoclinic equiaxed grain structure, the crystal has some cracks.

2. The blue tungsten oxide decomposition at 404℃ and hydrogen atmosphere APT blue tungsten oxide obtained in morphology. The overall shape and APT same, but the blue tungsten oxide particles have more cracks than APT, some particles are also broken for a few. APT tungsten trioxide we used to get, and its appearance is very similar with APT.

3.Purple oxide, tungsten oxide, tungsten purple WO₂ morphology. Compared with the blue tungsten oxide, its appearance has changed significantly. Each piece by a large number of small columnar arrangement messy crystals. However, the entire collection of WO_2.72 small columnar grain morphology still has the APT.

4. Brown tungsten oxide morphology pure tungsten dioxide. This is the APT tungsten dioxide as raw material to go through the blue tungsten oxide and tungsten oxide phase purple system. Most WO_2.72 columnar crystals into a sleek flat particles.

In the oxidation of hydrogen reduction process of tungsten, tungsten oxide may arise have their specific morphology, but it still has the secondary particles tend to leave iron tungstate appearance. During the restore process, the changing size of the particles. Size tungsten powder in a considerable extent, depends on the reduction of the size of tungsten oxide intermediates. From blue or purple oxide, tungsten oxide, tungsten to tungsten oxide reduction this stage, tungsten powder particle size has a decisive impact.

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Tungsten as a strategic non-ferrous metals, because nature has a high melting point, high elastic modulus, high hardness, good thermal conductivity and excellent fracture toughness, they are applied to cemented carbide, high-density tungsten alloy, tungsten wire, tungsten and many other fields. With the development of modern industrial technology, the traditional tungsten powders made of tungsten products has been difficult to meet industry needs. And a large part of the quality factor depends on the performance of tungsten products tungsten powder raw material, and therefore its need to prepare good performance tungsten products, must be prepared by the excellent quality of tungsten powder.

You can make use of X-ray diffraction, scanning electron microscopy and surface area analyzer to study the process of W powder phase structure, evolution and mechanism of powder morphology and particle size reduction of WO3. WO3 during the restore sequence into WO2.9, WO2.72, WO2, eventually reduced to W. W in WO3 powders hydrogen reduction process, smoothing rule WO3 has hexahedral rough topography becomes a hexahedral, and with the reduction process, the larger secondary particles into smaller particles. In the hydrogen reduction of WO3 and WO2.72 WO2.90 process, the powder specific surface area is increasing, decreasing powder size, but reduced to the WO2.72 and WO2 WO2 reduced to W in the process, the powder specific surface decreases, increasing the particle size of the powder.

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Tungsten oxide is a surface resistance of controlled sensitive material, sensitive electronic mechanism of gas that caused the material after adsorption gas tungsten oxide crystal surface depletion layer changes, causing the change in resistance. Oxygen in the air adsorbed on the surface after the n-type oxide, tungsten, tungsten oxide by capturing the electronic guide to be formed in the oxygen-containing adsorption of negatively charged ions in the tungsten oxide surface. When the tungsten oxide NO2 contact with an oxidizing gas, NO2 gas molecules may be captured by the tungsten oxide conduction band electrons directly adsorbed on the tungsten oxide surface.

Solvothermal method utilizing a one-dimensional tungsten oxide nanowires, by incorporating an appropriate amount of single-walled carbon nanotubes (SWNT),tungsten oxide nano-composite structure -SWNT temperature sensitive components and to evaluate its sensitivity to temperature of the NO2 gas performance. By X-ray and scanning electron microscopy to characterize the microstructure of the material. Synthesis of tungsten oxide nanowire has a monoclinic structure of W₁₈O₄₉, SWNT composite material is embedded in the middle of the tungsten oxide nanowires. Gas sensing performance tests show that tungsten oxide nanowire composite structure -SWNT gas sensing components NO2 gas at room temperature showed a high sensitivity and fast response characteristics, lower incorporation of SWNT get good gas sensing performance favorable.

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