Liu Junyong

TL;DR: In this paper, a preparation method of a tungsten-copper functional gradient material is presented, which comprises the following steps of: (1) adding a tengsten precursor and a copper precursor into water to prepare a plurality of parts of sol systems with different tungstein-coppers weight ratios; adding a surfactant into the sol systems and drying a pluralityof parts of the sol system to obtain a plurality for the corresponding tengsthencopper compound precursor powder; (2) calcining a plurality part of the tungsthen-co

TL;DR: In this article, a method for the preparation of a crucible with a tungsten coating is presented, which consists of the following steps: (1) a needed pure Tungsten, pure molybdenum or moly bdenum alloy crucible base material is obtained through a specific processing technology according to a needed size; (2) a certain degree of surface roughening treatment is performed for the obtained CVD-tungsten base material; and then, the surface is cleaned to remove an oxide layer; and (3) tung

TL;DR: In this article, a tungsten-coated copper alloy part and a preparation method for nuclear energy protection is presented, which can avoid the phenomena of part deformation, coating falling off, and cracking on the condition that the size and thickness of all layers are matched with one another.

TL;DR: In this article, a manufacturing method of an arc tube for a ceramic metal halide lamp is described, where a green body in a semi arc tube shape is produced through an injection molding process; then, a pair of tube bodies in semi-arc tube shape are disposed in an other set of die to realize accurate positioning; a second injection is carried out by injecting a mixture of ceramic powder and a binder into the die, wherein a temperature of the mixture is 100-200 DEG C, and an injection pressure is 0.1-100MPa.