43results about How to "Achieve cost control" patented technology

The invention discloses a rare earth permanent magnet produced by applying abundant rare earth cerium (Ce) and a preparation method of the rare earth permanent magnet produced by applying abundant rare earth Ce. Based on a double-alloy process, main phase alloy formula uses Ce to partly replace neodymium (Nd), an optimized composition design enables a main alloy to form Ce2Fe14B phase and Nd2Fe14B phase to a greatest extent, and therefore high intrinsic magnetic property is guaranteed. A brand new crystal boundary phase is prepared by a crystal boundary reconstitution technology, and high integral magnetic property and corrosion resistant property are guaranteed, and meanwhile a nanometer powder crystal modification method is supplemented, a micro organization structure of a magnet is optimized, crystal boundary distribution is improved, and the magnetic property and the corrosion resistant property are further improved. By applying abundant rare earth cerium, cost is effectively reduced, and meanwhile balance between production and marketing is promoted. Praseodymium (Pr), Nd, and the like are chosen to form a hard magnetic shell layer of a main phase boundary in a composition design of crystal phase auxiliary alloy at the same time, compared high price heavy rare earth elements of dysprosium (Dy) and terbium (Tb) with the elements, and cost control can be further achieved.

The invention discloses a rare earth hydride addition based high-performance La / Ce / Y-rich rare earth permanent magnet and a preparation method thereof. A mutli-alloy technique is adopted, the primary alloy is rich in La / Ce / Y, and the secondary alloy is rare earth hydride. During sintering and heat treatment, a hard magnetic shell layer surrounding principal phase boundaries is formed, and the comprehensive magnetic performance of the rare earth permanent magnet can be improved. The invention provides a method for efficiently utilizing abundant rare earth La / Ce / Y, the magnet cost is greatly reduced, and the comprehensive magnetic performance of the rare earth permanent magnet can be ensured.

The invention provides a vorinostat derivative based on palladium on carbon, as well as a preparation method and application thereof. According to the vorinostat derivative, vorinostat is used as a parent compound, and the water solubility of vorinostat is improved by binding a water-soluble group, so that the use inconvenience and side effect in the administrating process of vorinostat raw drug can be effectively improved. Furthermore, the preparation method is simple and convenient in process, has simple operation steps, and is applicable to large-scale production.

The invention discloses a double-main-phase Nd2Fe14B-Ce2Fe14B composite permanent magnet. Mass fractions of Nd2Fe14B and Ce2Fe14B are 80%-90% and 10%-20% respectively. A preparation method includes: (1) weighing substances according to requirements, and smelting in a vacuum arc smelting furnace to obtain two alloys uniform in component; (2) putting the alloys into vacuum glass tubes respectively, putting into an annealing furnace, keeping the temperature at 700-800 DEG C for 10-12 days, and quenching in ice water; (3) making strip-casting flakes; (4) subjecting the strip-casting flakes to a hydrogen explosion process to obtain powder; (5) mixing the powder with a magnetic powder protection agent to obtain powder; (6) pressing; (7) sintering; (8) annealing. The preparation method is simple, the magnet is high in coercivity, and balance use of rare earth resources can be promoted.