Abstract:
An x-ray tube has a cathode and an anode produced from a first material. In order to prevent unwanted accretions from forming due to the evaporation of the anode material, a layer produced from a second material is provided on the anode at the side thereof facing the cathode. The layer exhibits a lower vapor pressure than the first material at a temperature of 800° C.
Abstract:
A miniature x-ray tube has an anode assembly capable of transmitting x-rays through the anode and over a wide angular range. The anode is in the shape of a cone or truncated cone with an axis on the x-ray tube frame axis, formed of low-Z material with high thermal conductivity for heat dissipation. A target material on the anode body is in a thin layer, which may be approximately 0.5 to 5 microns thick. In one embodiment a tube evacuation exhaust port at the tail end of the anode assembly forms a cavity for a getter, with a pinched-off tubulation at the end of the cavity.
Abstract:
An x-ray anode for use in an x-ray tube is provided. The x-ray anode includes a substrate material, a target material, and one or more graded coefficient of thermal expansion material layers. The target material is coupled to the one or more graded coefficient of thermal expansion material layers and the graded coefficient of thermal expansion material layers are coupled to the substrate material. A method of making the x-ray anode is also provided.
Abstract:
Fibrous monolith composites suitable for use in high temperature environments and/or harsh chemical environments are provided, along with methods of preparation thereof. The fibrous monolith composites exhibit such beneficial properties as enhanced strength, corrosion resistance, thermal shock resistance and thermal cycling tolerance.
Abstract:
An x-ray generator capable of generating multiple selected spectra of x-rays to penetrate an object being studied is described. An x-ray detector designed so as to detect and/or image different x-ray spectra selectively is also described. Undesired spectral components can be rejected, and desired spectral components accepted for detection and/or imaging.
Abstract:
An x-ray target assembly including a housing having a recess, a cooling fluid contained within the recess and an x-ray target attached to the housing, wherein the x-ray target does not directly contact the cooling fluid.
Abstract:
In a material bond for a composite product composed of a fiber-reinforced material and a further material, such as an anode for an x-ray tube, wherein the fibers of the fiber-reinforced material exhibit a preferred orientation, and wherein the magnitude of the coefficient of thermal expansion of the fiber-reinforced material is direction dependent and depends on the preferred orientation of the fibers, the preferred orientation of the fibers is aligned, at least in a boundary region between the fiber-reinforced material and the further material, such that the coefficient of thermal expansion of the fiber-reinforced material and the coefficient thermal expansion of the further material are approximately equal along this boundary region, in which the bond is formed.
Abstract:
A multilayer target 5 is composed of a first layer 5a, a second layer 5b and a third layer 5c which are made of different materials. When an electron beam 13 is incident upon the multilayer target 5, the electron beam 13 arrives at the third layer 5c, and X-rays Xa, Xb and Xc, the radiation qualities of which are respectively suitable for the characteristics of the first layer 5a, the second layer 5b and the third layer 5c, are generated.
Abstract:
A high-quality and high-reliability rotary anode target for X-ray tubes, of which the mechanical strength at high temperatures is increased and which is applicable not only to low-speed rotation (at least 3,000 rpm) but also even to high-speed rotation at high temperatures, and also a method for producing it. The rotary anode has a two-layered structure to be formed by laminating an Mo alloy substrate that comprises from 0.2% by weight to 1.5% by weight of TiC with the balance of substantially Mo, and an X-ray generating layer of a W—Re alloy that overlies the substrate.
Abstract:
Fibrous monolith composites suitable for use in high temperature environments and/or harsh chemical environments are provided, along with methods of preparation thereof. The fibrous monolith composites exhibit such beneficial properties as enhanced strength, corrosion resistance, thermal shock resistance and thermal cycling tolerance.