Tungsten copper is a material with high electricity conductivity, when using for resistance welding, the material is bonded with copper hand.

As the fossil fuels brings about global warming and climate change, find a substitute source of clean energy such as wind energy, hydrogen energy, and solar energy has become critical. Photoelectrochemical (PEC) water-splitting technology is one of the most considerable technologies to synthesis H₂ gas as a clean energy. Titanium dioxide (TiO₂) has caught a lot attention as an effectual photoelectrode in PEC water-splitting for H₂ production owing to its unique and promising functional properties, such as high photocatalytic activity, long term photo-stability, superior oxidation ability, inertness to chemical environment, as well as low cost.

In recent years, ultrafine tungsten powders have gained attention owing to their excellent characteristics. They have been added to hard metals and alloys with superior hardness and wear resistance.

Tungsten oxide (WO3) is believed to be a remarkable and feasible photoactive material due to its stable physico-chemical characteristics under different reaction conditions. Furthermore, WO3 has a band gap energy around 2.6 eV. Nether less, bulk WO3 semiconductor, surface accumulation of photo generated charge carriers led to increase their recombination rate and eventually limiting the photocatalytic efficiency.