公开(公告)号：US11352681B2

公开(公告)日：2022-06-07

申请号：US16503117

申请日：2019-07-03

Applicant: Purdue Research Foundation

Inventor： Kenneth H. Sandhage ,  Mario Raul Caccia

IPC: C22C1/10 ,  C04B35/653

Abstract: Methods for producing components for use in high temperature systems that include reacting a fluid reactant and a porous preform that has a pore volume and contains a solid oxide reactant that defines a solid volume of the porous preform. The method includes infiltrating the fluid reactant into the porous preform to react with the solid oxide reactant to produce a oxide/metal composite component, during which a displacing metal replaces a displaceable species of the solid oxide reactant to produce at least one solid oxide reaction product that has a reaction product volume that at least partially fills the pore volume. The oxide/metal composite component includes at least one oxide phase and at least one metal phase. The component is exposed to temperatures greater than 500° C. and the at least one oxide phase and the at least one metal phase exhibit thermal expansion values within 50% of one another.

公开(公告)号：US12139794B2

公开(公告)日：2024-11-12

申请号：US16342597

申请日：2017-10-11

Applicant: Purdue Research Foundation

Inventor： Kenneth H. Sandhage

IPC: C23C18/16 ,  C23C18/18 ,  C23C18/31 ,  C23C18/32 ,  C23C18/38 ,  C23C18/48 ,  C23C30/00

Abstract: Methods of enhancing the corrosion resistance of an oxidizable material exposed to a supercritical fluid is disclosed One method includes placing a surface layer on an oxidizable material, and choosing a buffered supercritical fluid containing a reducing agent with the composition of the buffered supercritical fluid containing the reducing agent chosen to avoid the corrosion of the surface layer or reduce the rate of corrosion of the surface layer and avoid the corrosion of the oxidizable material or reduce the rate of corrosion of the oxidizable material at a temperature above the supercritical temperature and supercritical pressure of the supercritical fluid.

公开(公告)号：US20200255342A1

公开(公告)日：2020-08-13

申请号：US16783793

申请日：2020-02-06

Applicant: Purdue Research Foundation

Inventor： Kenneth H. Sandhage

IPC: C04B35/505 ,  C04B35/45 ,  C04B35/628 ,  C04B41/00 ,  C04B41/50 ,  C04B41/87 ,  B64C30/00 ,  B64G99/00

Abstract: Methods for producing oxide/metal composite components for use in high temperature systems, and components produced thereby. The methods use a fluid reactant and a porous preform that contains a solid oxide reactant. The fluid reactant contains yttrium as a displacing metal and the solid oxide reactant of the preform contains niobium oxide, of which niobium cations are displaceable species. The preform is infiltrated with the fluid reactant to react its yttrium with the niobium oxide of the solid oxide reactant and produce an yttria/niobium composite component, during which yttrium at least partially replaces the niobium cations of the solid oxide reactant to produce yttria and niobium metal, which together define a reaction product. The pore volume of the preform is at least partially filled by the reaction product, whose volume is greater than the volume lost by the solid oxide reactant as a result of reacting yttrium and niobium oxide.

公开(公告)号：US20200010958A1

公开(公告)日：2020-01-09

申请号：US16494922

申请日：2018-03-16

Applicant: Purdue Research Foundation

Inventor： Kenneth H. Sandhage

IPC: C23C22/70 ,  C23C22/83 ,  C23F15/00 ,  C22C29/12

Abstract: A method for enhancing corrosion resistance of a solid material exposed to a liquid. The method includes providing a solid material which can form a solid product layer when exposed to the corrosive liquid, and maintaining the concentration of the solid product material in the liquid either at saturation or elevated level. A materials system containing a solid material capable of forming a solid product layer when exposed to air or a liquid environment containing dissolved oxygen at levels sufficient for oxidation of at least one constituent of the solid material, wherein the solid product layer is in contact with a liquid containing an elevated or saturated concentration of the dissolved solid product layer. A corrosion-resistant device containing a solid material with a solid-product layer exposed to a molten salt solution, wherein the concentration of the solid-product dissolved in the molten salt solution is at saturation or elevated level.

公开(公告)号：US20200010928A1

公开(公告)日：2020-01-09

申请号：US16503117

申请日：2019-07-03

Applicant: Purdue Research Foundation

Inventor： Kenneth H. Sandhage ,  Mario Raul Caccia

IPC: C22C1/10 ,  C04B35/653

Abstract: Methods for producing components for use in high temperature systems that include reacting a fluid reactant and a porous preform that has a pore volume and contains a solid oxide reactant that defines a solid volume of the porous preform. The method includes infiltrating the fluid reactant into the porous preform to react with the solid oxide reactant to produce a oxide/metal composite component, during which a displacing metal replaces a displaceable species of the solid oxide reactant to produce at least one solid oxide reaction product that has a reaction product volume that at least partially fills the pore volume. The oxide/metal composite component includes at least one oxide phase and at least one metal phase. The component is exposed to temperatures greater than 500° C. and the at least one oxide phase and the at least one metal phase exhibit thermal expansion values within 50% of one another.

公开(公告)号：US20220411336A1

公开(公告)日：2022-12-29

申请号：US17892091

申请日：2022-08-21

Applicant: Purdue Research Foundation

Inventor： Kenneth H. Sandhage

IPC: C04B35/505 ,  C04B35/45 ,  C04B35/628 ,  C04B41/00 ,  C04B41/50 ,  B64C30/00 ,  C04B41/87 ,  B64G99/00

Abstract: Methods for producing oxide/metal composite components for use in high temperature systems, and components produced thereby. The methods use a fluid reactant and a porous preform that contains a solid oxide reactant. The fluid reactant contains yttrium as a displacing metal and the solid oxide reactant of the preform contains niobium oxide, of which niobium cations are displaceable species. The preform is infiltrated with the fluid reactant to react its yttrium with the niobium oxide of the solid oxide reactant and produce an yttria/niobium composite component, during which yttrium at least partially replaces the niobium cations of the solid oxide reactant to produce yttria and niobium metal, which together define a reaction product. The pore volume of the preform is at least partially filled by the reaction product, whose volume is greater than the volume lost by the solid oxide reactant as a result of reacting yttrium and niobium oxide.

公开(公告)号：US11434173B2

公开(公告)日：2022-09-06

申请号：US16783793

申请日：2020-02-06

Applicant: Purdue Research Foundation

Inventor： Kenneth H. Sandhage

IPC: C04B35/505 ,  C04B35/45 ,  C04B35/628 ,  C04B41/00 ,  C04B41/50 ,  B64C30/00 ,  B64G99/00 ,  C04B41/87

Abstract: Methods for producing oxide/metal composite components for use in high temperature systems, and components produced thereby. The methods use a fluid reactant and a porous preform that contains a solid oxide reactant. The fluid reactant contains yttrium as a displacing metal and the solid oxide reactant of the preform contains niobium oxide, of which niobium cations are displaceable species. The preform is infiltrated with the fluid reactant to react its yttrium with the niobium oxide of the solid oxide reactant and produce an yttria/niobium composite component, during which yttrium at least partially replaces the niobium cations of the solid oxide reactant to produce yttria and niobium metal, which together define a reaction product. The pore volume of the preform is at least partially filled by the reaction product, whose volume is greater than the volume lost by the solid oxide reactant as a result of reacting yttrium and niobium oxide.

公开(公告)号：US20190256979A1

公开(公告)日：2019-08-22

申请号：US16342597

申请日：2017-10-11

Applicant: Purdue Research Foundation

Inventor： Kenneth H. Sandhage

IPC: C23C18/16 ,  C23C18/31

Abstract: Methods of enhancing the corrosion resistance of an oxidizable material exposed to a supercritical fluid is disclosed One method includes placing a surface layer on an oxidizable material, and choosing a buffered supercritical fluid containing a reducing agent with the composition of the buffered supercritical fluid containing the reducing agent chosen to avoid the corrosion of the surface layer or reduce the rate of corrosion of the surface layer and avoid the corrosion of the oxidizable material or reduce the rate of corrosion of the oxidizable material at a temperature above the supercritical temperature and supercritical pressure of the supercritical fluid.