Molybdenum tungsten alloy

Alloys containing molybdenum and tungsten, including molybdenum based molybdenum tungsten alloys and tungsten based tungsten molybdenum molybdenum alloy series. This alloy can be formed in any proportion and is a complete solid solution alloy at all temperatures.

Niobium tungsten alloy

A niobium alloy formed by adding a certain amount of tungsten and other elements based on niobium. Tungsten and niobium form an infinite solid solution. Tungsten is an effective strengthening element for niobium, but with the increase of tungsten addition, the plastic brittle transition temperature of the alloy will increase, and the grains will also grow significantly. Therefore, in order to obtain high-strength niobium tungsten alloys, it is necessary to control the amount of tungsten added appropriately, and at the same time, it is necessary to add an appropriate amount of elements such as zirconium and hafnium that refine grain size and reduce the plastic brittle transition temperature. In 1961, the United States successfully developed Nb-10W-2.5Zr alloy for the skin of space shuttles, which later developed into Nb-10W-1Zr-0.1C alloy. In the early 1970s, China also successfully developed NbWl0Zr2.5 and NbWl0Zr1C0.1 alloys.

light alloys

Aluminum lithium alloy has the characteristics of high specific strength (fracture strength/density), high specific stiffness, and low relative density. If used as a modern aircraft skin material, a large passenger aircraft can reduce weight by 50 kg. Taking Boeing 747 as an example, for every 1 kg reduction, a profit of $2000 per year can be made. Titanium alloy is lighter, corrosion-resistant, non-magnetic, and has higher strength than steel, making it an ideal material for aviation and naval vessels.

Hydrogen storage alloy

Due to the limited reserves of oil and coal, and the environmental pollution caused by their use, especially the global oil crisis in the 1970s, hydrogen energy as a new clean fuel has become a research hotspot. The storage and transportation of hydrogen is an important link in the process of hydrogen energy utilization. In 1969, Philips Corporation of the Netherlands developed LaNi5 hydrogen storage alloy, which has the property of reversible absorption and release of a large amount of hydrogen. The density of hydrogen in its alloy hydride LaNi5H6 is equivalent to that of liquid hydrogen, about 1000 times the density of hydrogen.