Preparation method of yttrium sol

Abstract

The invention relates to a preparation method of yttrium sol. The invention adopts the technical scheme that the yttrium sol comprises the following components in parts by weight: 15 parts of yttria, 23-30 parts of citric acid, 20-29 parts of ammonia water and 31-34 parts of water, and the yttrium sol is prepared by heating, reaction, decompression and concentration under certain conditions. The preparation method has the beneficial effects that the colloid is stable and transparent, and the yttrium sol can be stored for 12 months without gelatinization and layering under normal temperature; the prepared slurry is good in shear resistance, and can be stirred continuously without solidification and deterioration under the condition of normal water replenishing; the refrigeration is not needed, the energy is saved, and the efficiency is high; and no toxicity and harm are generated, no volatile gas overflows, and the environment is protected.

Description

1. Technical field: [0001] The invention relates to the technical field of titanium alloy investment casting adhesives, in particular to a method for preparing a titanium alloy investment casting shell material adhesive—yttrium sol. 2. Background technology: [0002] Titanium alloy is a high-strength metal material used in aviation and aerospace fields. Due to the extremely high hardness of this type of alloy material, conventional machining processes are difficult to do, and it is generally produced by non-cutting investment casting process. [0003] Titanium is extremely active and easily reacts with other elements at high temperature. The chemical inertness of yttrium in the lanthanides makes it an ideal material for investment casting of titanium alloys. Only the United States has the technology to produce yttrium sol in the world, and Chinese companies cannot obtain this product. In the early days, we used yttrium nitrate to produce yttrium sol. There are also reports ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a titanium alloy with stable process, energy saving, environmental protection and easy control for the defects of existing zirconium amine acetate and zirconium carbonate amine such as poor stability, high energy consumption, high cost, complicated process and difficult product quality control. Investment Casting Adhesives