8 results about "Neodymium" patented technology

The invention provides a 1.2 micron wavelength all-solid-state Raman laser, and belongs to the technical field of solid-state laser. The 1.2 micron wavelength all-solid-state Raman laser comprises a pumping source, a coupling lens group and a resonant cavity. A laser crystal, a Q-switched device and a Raman crystal are arranged in the resonant cavity. Constant temperature of the crystals and the device is maintained by a temperature control system. 1.1 micron fundamental frequency light is generated by Nd:YAG ceramic, and 1252nm Raman light is outputted by the Raman crystal SrWO4. Raman shift is performed on 1.1 microns fundamental frequency wave of neodymium-doped crystals for the first time as we know. When the pumping power is 21.3W and the pulse repetition frequency is 5KHz, the maximum output power of the obtained 1252nm Raman light is 1.02W and an optical conversion efficiency is 4.79%. Dielectric films capable of outputting the required wavelength are coated on an input lens M1, an output lens M2 and the end surface of the laser crystal and the Raman crystal. The laser can be used as a pumping source of a Raman amplifier of 1.26-1.36 micron communication window band and is an important application in laser display. Besides, the laser can also be applied to the biological, medical and astronomical fields.

A high-strength high-conductivity rare earth copper-magnesium alloy contact wire comprises, by weight percentage, 0.1-0.8% of magnesium, 0.1-0.4% of nickel, 0.1-0.4% of zinc, 0.1-0.4% of silver, 0.05-0.15% of a rare earth element and the balance copper and inevitable impurity elements, wherein the rear element is one or two of cerium and neodymium. When the rare earth element is added in the form that the cerium and neodymium are mixed, the weight ratio of the cerium and neodymium is 1:1-1:2. The high-strength high-conductivity rare earth copper-magnesium alloy contact wire overcomes the technical defect that the requirements on electrical conductivity and the tensile strength of a copper-magnesium alloy cannot be met at the same time in the prior art and can meet the performance requirement of the copper alloy for the railway contact wire.

The invention discloses a postoperative incision patch, the bottom layer thereof is adhesive cloth (1), a water absorption pad (2) is arranged on the surface of the adhesive cloth (1), one surface of the water absorption pad (2) is connected with the adhesive cloth (1), a permanent magnetic disk (3) is arranged on the other surface, the permanent magnetic disk (3) is the rare earth magnetic disk, trace elements for promoting the wound healing are arranged on the surface of the rare earth magnetic disk, the trace elements comprise iron element, boron element and neodymium element, wherein, the neodymium element accounts for 33 to 35 percent, the boron element accounts for 1 to 1.5 percent and the iron element accounts for 64 to 65 percent; a spunlaced nonwoven fabric layer (5) is covered on the permanent magnetic disk (3), a surface layer (6) is covered on the spunlaced nonwoven fabric layer (5), an anti-adhesion film (4) is covered on the surface layer (6), and the both sides of the spunlaced nonwoven fabric layer (5), the both sides of the surface layer (6) and the both sides of the anti-adhesion film (4) are connected with the adhesive cloth (1). The postoperative incision patch can not only promote the wound healing, but can also have the effects of alleviating pain and reducing the scar formation.

The invention relates to a textile fiber product containing rare earth elements. The textile fiber product contains a textile fiber product body and rare earth elements. The rare earth elements are artificial promethium and neodymium-cerium alloy, the rare earth elements and the textile fiber product are combined by electrostatic adsorption, electrostatic adsorption has small damage to the textile fiber product, adding of the rare earth elements does not change the color and softness, the ferromagnetism of the rays and alloy in the rare earth elements also plays a certain role in health in addition to industrial and living fields. The textile fiber product provided by the invention utilizes the ferromagnetism, heat sources, light and other characteristics generated by rays and alloy in active elements of rare earth, realizes the functions of rare earth in the textile fiber product, and achieves the purposes of life cultivation and health preservation.

The invention relates to the technical field of nanocrystalline neodymium-iron-boron permanent magnet block preparation, and discloses a preparation method of a nanocrystalline neodymium-iron-boron permanent magnet block which concenrs amorphous neodymium-iron-boron powder. The method comprises the following steps: S1, putting the amorphous neodymium-iron-boron powder into a smelting furnace for capacity; after smelting, the amorphous neodymium iron boron solution in the smelting furnace is poured into a heat preservation furnace in a tilting mode. According to the preparation method of the nanocrystalline neodymium-iron-boron permanent magnet block, amorphous neodymium iron boron powder without any additive is added; then, the nanocrystalline neodymium iron boron powder is placed in a magnetic field for vertical orientation; hundreds of kilograms of amorphous neodymium-iron-boron powder is smelted at a time through the smelting furnace, the smelting batch is reduced, the time cost generated by multiple times of smelting is reduced, and the consistency of the amorphous neodymium-iron-boron powder is improved; finally large-batch, low-cost and high-efficiency production of nanocrystalline neodymium-iron-boron permanent magnet blocks with good uniformity can be achieved.