3results about How to "Free from oxidation" patented technology

The invention provides a method for crushing zero-valent iron. The method comprises the following steps: adding FeS, FeS2, zero-valent iron powder and absolute ethyl alcohol into a container, and uniformly stirring to form slurry to be ground; the wet ball mill is filled with grinding beads, the slurry to be ground is added into the wet ball mill to be ground, slurry is obtained, and the grinding time is 10-640 min; taking out the slurry from the wet ball mill, putting the slurry into magnetic separation equipment for separation, collecting ground zero-valent iron particles, and washing with absolute ethyl alcohol; and the washed zero-valent iron particles are placed in a vacuum drying box and dried at the temperature lower than 40 DEG C.

Semiconductor processing methods and semiconductor structures have molybdenum-containing features. Methods include etching a substrate to form one or more shallow trench isolations and a plurality of vertically extending channels. Methods include forming one or more molybdenum-containing layers within one or more of the shallow trench isolations. Methods include contacting exposed surfaces of the one or more molybdenum-containing layers with a nitrogen-containing precursor, where such contacting nitridizes the exposed surfaces of the one or more molybdenum-containing layers, forming a protective layer over the one or more molybdenum-containing layers.

The invention discloses a petroleum accessory platform base manufacturing method, and relates to the technical field of petroleum accessories. The manufacturing method of the petroleum accessory platform base comprises the eight steps that nickel Ni, manganese Mn and chromium Cr are added into molten steel for machining the petroleum accessory platform base, the corrosion resistance and the abrasion resistance of steel can be improved by adding nickel into the molten steel, the stability of an austenite structure is improved, the strength, the hardness and the toughness of the steel are improved by adding manganese into the molten steel, and the corrosion resistance and the abrasion resistance of the steel can be improved by adding chromium Cr into the molten steel. Meanwhile, manganese can serve as a desulfurizing agent to help remove sulfur in the molten steel, so that the quality of the steel is improved, chromium is added into the molten steel to form a stable oxidation film, the corrosion resistance of the steel is improved, meanwhile, chromium can improve the wear resistance and the high temperature resistance of the steel, nickel and chromium form a nickel-chromium alloy phase, and the corrosion resistance and the high temperature resistance of the steel are further improved; the functions of high temperature resistance, wear resistance and corrosion resistance of the oil accessory platform base are improved, and the device is convenient to popularize and use.