Titanium hydride compound foam powder and quantitative combination process thereof

Abstract

The invention relates to a titanium hydride compound foam powder and a quantitative combination process thereof. The hydrogen content of titanium hydride in the foam powder is 2-3.5% of undercapacity.The preparation method comprises the following steps: placing titanium powder in a high-vacuum indirect boat-pushing type tube furnace, heating to a defined temperature, filling undercapacity hydrogen quantitatively to ensure that titanium is directly reacted with hydrogen to form saturated and unsaturated titanium hydride compounds with different hydrogen contents. The foam powder with unsaturated titanium hydride compounds can well solve the problems that the decomposition degassing rate is too fast, the volatilizing loss is too large, the production process is extremely unstable, the yieldis low and the like in the production of aluminum foam with small bubble size and high porosity.

Description

technical field

[0001] The invention belongs to the technical field of material processing, in particular to a method for controlling the ratio of titanium and hydrogen content during the reaction of titanium and hydrogen to form a titanium hydrogen compound at a certain temperature, more specifically, placing titanium powder in a high vacuum indirect push boat In the tubular furnace, hydrogen is supplied quantitatively when heated to a certain temperature, and titanium and hydrogen are directly reacted to form unsaturated titanium hydrogen compounds with different hydrogen contents. Background technique

[0002] With the rise of foam metal research, titanium hydride (TiH2) has begun to attract people's attention as an efficient foaming agent, especially in the process of preparing foamed aluminum, the foaming effect of titanium hydride (TiH2) has not yet been recognized by other methods. The foaming agent is replaced, and its air release performance has a great influence on...