Abstract: The present fluid container includes a first metallic member, a second metallic member, an adherence par, a first interface, and a second interface. Each of the first and second metallic members contains chromium. The adherence part is made of an oxide containing chromium as a primary component. The adherence part adheres the first metallic member and the second metallic member to each other. The first interface is provided as an interface between the first metallic member and the adherence part. The second interface is provided as an interface between the second metallic member and the adherence part. The first interface includes a first wavy portion. The first wavy portion repeatedly winds in a thickness direction. The first wavy portion extends along an outer peripheral edge of the first metallic member.

Abstract: A chromium alloy container has an internal space. The chromium alloy container includes a first alloy member constituted by an alloy containing chromium, a second alloy member constituted by an alloy containing chromium, and an interposing portion interposed between the first alloy member and the second alloy member. The interposing portion includes an oxide adhesion layer constituted by an oxide containing chromium as a main component, and a metal connection portion embedded in the oxide adhesion layer and connecting the first alloy member and the second alloy member to each other.

Abstract: A chromium alloy container includes a first alloy member constituted by an alloy containing chromium, a second alloy member constituted by an alloy containing chromium, and an adhering portion adhering the first alloy member and the second alloy member to each other. The adhering portion is constituted by an oxide containing chromium as a main component.

Abstract: A chromium alloy container has an internal space. The chromium alloy container includes a first alloy member constituted by an alloy containing chromium, a second alloy member constituted by an alloy containing chromium, and an adhering portion adhering the first alloy member and the second alloy member to each other. The adhering portion is constituted by an oxide containing chromium as a main component. The adhering portion has a void therein.

Abstract: The present fluid container includes a first metallic member, a second metallic member, and an adherence part. Each of the first and second metallic members contains chromium. The adherence part is made of an oxide containing chromium as a primary component. The adherence part adheres the first metallic member and the second metallic member to each other. The adherence part includes a base portion and a protruding portion. The protruding portion protrudes from the base portion in a thickness direction.

Abstract: A chromium alloy container has an internal space. The chromium alloy container includes a first alloy member constituted by an alloy containing chromium, a second alloy member constituted by an alloy containing chromium, and an adhering portion adhering the first alloy member and the second alloy member to each other. The adhering portion is constituted by an oxide containing chromium as a main component, and metal particles at least partially embedded in the oxide.

Abstract: A chromium alloy container has an internal space. The reducing gas container includes a first metal member, a second metal member, and a sealing portion sealing a gap between the first metal member and the second metal member. The sealing portion includes a first bonding portion integrated with the first and second metal members, and a second bonding portion sandwiched between the first and second metal members and disposed on an internal space side of the first bonding portion. The first bonding portion is constituted by a metal material. The second bonding portion is constituted by a crystalline metal oxide.

Abstract: A fluid container includes a first metallic member, a second metallic member, an adherence part, a first interface, and a second interface. The first metallic member contains chromium. The second metallic member contains chromium. The adherence part is made of an oxide containing chromium as a primary component. The adherence part adheres the first and second metallic members to each other. The first interface is provided as an interface between the first metallic member and the adherence part. The second interface is provided as an interface between the second metallic member and the adherence part. The first interface includes a first slant portion. The first slant portion slants with respect to an in-plane direction of the first metallic member.

Abstract: A method for manufacturing a ceramic member includes a mark process for forming a mark indicating information about a ceramic green body on the ceramic green body by using a mark material capable of being erased by a predetermined heat treatment; and a heat treatment process for erasing the mark by applying the ceramic green body to the predetermined heat treatment.

Abstract: An electrochemical cell includes a hydrogen electrode layer, an oxygen electrode layer, and an electrolyte layer disposed between the hydrogen electrode layer and the oxygen electrode layer. The hydrogen electrode layer is constituted by a perovskite type oxide, gadolinium-doped ceria and nickel. The perovskite type oxide includes gadolinium, chromium, and manganese.

Abstract: An electrochemical cell includes: a metal substrate having a principal surface and a plurality of connecting holes formed in the principal surface; and a cell body disposed on the principal surface. The cell body has: a gas diffusion layer disposed on the principal surface, the gas diffusion layer being electrically conductive; a first electrode layer disposed on the gas diffusion layer; a second electrode layer; and an electrolyte layer disposed between the first electrode layer and the second electrode layer. The metal substrate has: a gas-permeable region in which the plurality of connecting holes are formed; and a non-gas-permeable region surrounding the gas-permeable region in a plan view. The gas diffusion layer has: a first region formed on the gas-permeable region; and a second region formed on the non-gas-permeable region. The second region has a crack-preventing space in a cross section along a thickness direction.

Abstract: An electrochemical cell includes a metal substrate having a principal surface and a plurality of connecting holes formed in the principal surface, and a cell body disposed on the principal surface. The cell body has a gas diffusion layer disposed on the principal surface, the gas diffusion layer being electrically conductive, and a first electrode layer disposed on the gas diffusion layer; a second electrode layer. The gas diffusion layer includes a first portion sandwiched between the principal surface and the first electrode layer. The first portion has a gas flow path having a length equal to 20% or more of a total thickness of the first portion in a thickness direction thereof in a cross-section of the first portion along the thickness direction.

Abstract: An electrochemical cell includes: a metal substrate having a principal surface and a plurality of connecting holes formed in the principal surface; and a cell body disposed on the principal surface. The cell body has: a gas diffusion layer disposed on the principal surface, the gas diffusion layer being electrically conductive; a first electrode layer disposed on the gas diffusion layer; a second electrode layer; and an electrolyte layer disposed between the first electrode layer and the second electrode layer. In a plan view of the principal surface, at least a portion of an outer edge of the gas diffusion layer has a wave shape in which a peak portion and a valley portion are alternately continuous with each other.

Abstract: An electrochemical cell includes: a metal substrate having a principal surface and a plurality of connecting holes formed in the principal surface; and a cell body disposed on the principal surface. The cell body has: a gas diffusion layer disposed on the principal surface, the gas diffusion layer being electrically conductive; a first electrode layer disposed on the gas diffusion layer; a second electrode layer; and an electrolyte layer disposed between the first electrode layer and the second electrode layer. The first electrode layer has: a neighboring pore located near the gas diffusion layer; and a fine particle independently present within the neighboring pore.

Abstract: An electrochemical cell includes a metal substrate and a cell body. The metal substrate has: a gas-permeable region in which a plurality of connecting holes are formed; and a non-gas-permeable region surrounding the gas-permeable region in a plan view. The cell body is disposed on the metal substrate. The cell body has: a first electrode layer containing Ni; a second electrode layer; and an electrolyte layer disposed between the first electrode layer and the second electrode layer. The first electrode layer has a first region formed on the gas-permeable region, and a second region formed on the non-gas-permeable region. A mean particle diameter of Ni contained in the second region is smaller than a mean particle diameter of Ni contained in the first region.

Abstract: An electrochemical cell includes a metallic plate, a cell body, and a first reinforcing portion. The metallic plate includes a first principal surface, a second principal surface, and a through hole. The cell body includes a first electrode layer, a second electrode layer, and an electrolyte layer. The electrolyte layer is disposed between the first electrode layer and the second electrode layer. The cell body is disposed on the first principal surface of the metallic plate. The first reinforcing portion is provided on an inner wall surface of the through hole along a circumferential direction of the through hole. The first reinforcing portion is configured to reinforce the inner wall surface of the through hole.

Abstract: An alloy member includes a base member that includes a recess in a surface of the base member and is constituted by an alloy material containing chromium, an anchor portion is disposed in the recess and contains an oxide containing manganese and a covering layer is connected to the anchor portion and contains a low-equilibrium oxygen pressure element whose equilibrium oxygen pressure is lower than that of chromium.

Abstract: A manifold includes a first manifold main body and a second manifold main body. The first manifold main body includes a first gas chamber configured to communicate with a first gas channel. The second manifold main body includes a second gas chamber configured to communicate with a second gas channel. The second manifold main body is disposed in the first manifold main body.

Abstract: An alloy member includes a base member that includes a recess in a surface of the base member and is constituted by an alloy material containing chromium, an anchor portion is disposed in the recess and contains an oxide containing manganese and a covering layer is connected to the anchor portion and contains a low-equilibrium oxygen pressure element whose equilibrium oxygen pressure is lower than that of chromium.

Abstract: An alloy member includes a base member that includes a recess in a surface of the base member and is constituted by an alloy material containing chromium, an anchor portion is disposed in the recess and contains an oxide containing manganese and a covering layer is connected to the anchor portion and contains a low-equilibrium oxygen pressure element whose equilibrium oxygen pressure is lower than that of chromium.