Producing titanium alloy materials through reduction of titanium tetrachloride
AssigneeGeneral Electric Company
InventorsEvan H. Copland, Albert Santo Stella, Eric Allen Ott, Andrew Philip Woodfield, Leon Hugh Prentice
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Abstract
Process for producing a titanium alloy material, such as a titanium aluminum alloy, are provided. The process includes reduction of TiCl4, which includes a titanium ion (Ti4+), through intermediate ionic states of an AlCl3-based salt solution that includes Ti3+ and an AlCl3-based salt solution that includes Ti2+, which may then undergo a disproportionation reaction to form the titanium aluminum alloy.
Claims32
A process for producing a titanium alloy material, comprising:
- adding TiCl4 to an input mixture at a first reaction temperature such that at least a portion of the Ti4+ in the TiCl4 is reduced to a first intermediate reaction mixture, wherein the input mixture comprises aluminum, optionally AlCl3, and, optionally, one or more alloying element chloride, and wherein the first intermediate reaction mixture comprises an AlCl3-based salt solution that includes Ti3+;
- thereafter, drying the first intermediate reaction mixture at a drying temperature of about 160° C. to about 175° C.;
- thereafter, heating to a second reaction temperature such that at least a portion of the Ti3+ of the first intermediate reaction mixture is reduced to a second intermediate reaction mixture, wherein the second intermediate reaction mixture is an AlCl3-based salt solution that includes Ti2+, wherein adding TiCl4 to the input mixture at the first reaction temperature and heating to the second reaction temperature are performed sequentially in a reaction process;
- and
- further heating the second intermediate reaction mixture to a third reaction temperature such that the Ti2+ forms the titanium alloy material via a disproportionation reaction.
A process for producing a titanium alloy material, comprising:
- adding TiCl4 to an input mixture at a first reaction temperature such that at least a portion of the Ti4+ in the TiCl4 is reduced to a first intermediate reaction mixture, wherein the input mixture comprises aluminum, optionally AlCl3, and, optionally, one or more alloying element chloride, and wherein the first intermediate reaction mixture comprises an AlCl3-based salt solution that includes Ti3+;
- heating to a second reaction temperature such that at least a portion of the Ti3+ of the first intermediate reaction mixture is reduced to a second intermediate reaction mixture, wherein the second intermediate reaction mixture is an AlCl3-based salt solution that includes Ti2+, wherein adding TiCl4 to the input mixture at the first reaction temperature and heating to the second reaction temperature are performed sequentially in a reaction process;
- and
- further heating the second intermediate reaction mixture to a third reaction temperature such that the Ti2+ forms the titanium alloy material via a disproportionation reaction, wherein the third reaction temperature is about 250° C. to about 650° C.
A process for producing a titanium-containing material, comprising:
- mixing Al particles, AlCl3 particles, and, optionally, particles of at least one other alloy chloride to form an input mixture;
- adding TiCl4 to the input mixture;
- reducing Ti4+ in the TiCl4 in the presence of the input mixture at a first reaction temperature to form a first intermediate reaction mixture comprising Ti3+, wherein the first reaction temperature is lower than about 150° C.;
- thereafter, drying the first intermediate reaction mixture at a drying temperature of about 160° C. to about 175° C.;
- and
- thereafter, reducing the first intermediate reaction mixture comprising Ti3+ in the presence of the input mixture at a second reaction temperature to form a second intermediate reaction mixture comprising Ti2+, wherein the second reaction temperature is about 160° C. to about 250° C.
The process of 29, further comprising:
- thereafter, reacting the second reaction intermediate comprising Ti2+ via a disproportionation reaction in the presence of the input mixture to form the titanium alloy material.
A process for producing a titanium alloy material, comprising:
- adding TiCl4 to an input mixture at a first reaction temperature such that at least a portion of the Ti4+ in the TiCl4 is reduced to a first intermediate reaction mixture, wherein the input mixture comprises aluminum, optionally AlCl3, and, optionally, one or more alloying element chloride, and wherein the first intermediate reaction mixture comprises an AlCl3-based salt solution that includes Ti3+;
- and
- heating to a second reaction temperature such that at least a portion of the Ti3+ of the first intermediate reaction mixture is reduced to a second intermediate reaction mixture, wherein the second intermediate reaction mixture is an AlCl3-based salt solution that includes Ti2+, wherein adding TiCl4 to the input mixture at the first reaction temperature and heating to the second reaction temperature are performed sequentially in a reaction process;
- and
- thereafter, reacting the second reaction intermediate comprising Ti2+ via a disproportionation reaction at a third reaction temperature in the presence of the input mixture to form the titanium alloy material, wherein the third reaction temperature is about 250° C. to about 650° C.
Dependencies are inferred from the claim text.