X-ray Tube Target Bonding via MoNbTi Diffusion Layer
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Solution Overview
Problem
Current X-ray tube targets face challenges in achieving high-temperature bonding strength while minimizing production costs and environmental impact, as existing methods involve expensive and toxic materials like vanadium or complex sputtering processes.
Innovation Solution
A carbon-based X-ray tube target is bonded with a molybdenum (Mo) base material using a joint layer comprising an MoNbTi diffusion phase, an NbTi alloy phase, and a ZrNb alloy phase, with specific thickness ranges and a bonding process at controlled temperatures and pressures, eliminating the need for vanadium and simplifying production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If vanadium or sputtering processes are used for bonding, then bonding strength is improved, but production cost increases and environmental impact worsens
Solution Approach 1:
The patent replaces expensive vanadium-based bonding materials with a cost-effective MoNbTi diffusion phase joint layer. This joint layer is formed through a simplified diffusion process rather than complex sputtering, reducing both material and manufacturing costs while maintaining adequate bonding strength for the application
Solution Approach 2:
The patent changes the bonding mechanism from physical sputtering deposition to thermal diffusion bonding. By controlling temperature and time parameters during the diffusion process, a MoNbTi joint layer is formed that provides sufficient bonding strength without requiring expensive vanadium materials or complex sputtering equipment
2Strength
If vanadium or sputtering processes are used for bonding, then bonding strength is improved, but environmental harm increases
Solution Approach 1:
The patent eliminates vanadium, a toxic material, from the bonding process by using a MoNbTi diffusion phase joint layer. This substitution removes the environmental harm associated with vanadium handling and disposal while maintaining the necessary bonding performance through a cleaner diffusion-based manufacturing process
3Manufacturing precision
If complex sputtering processes are used, then bonding quality is improved, but manufacturing complexity increases
Solution Approach 1:
The patent replaces the complex sputtering process (a physical vapor deposition technique requiring sophisticated equipment and control systems) with a simpler thermal diffusion process. This substitution maintains bonding quality by forming a controlled MoNbTi joint layer through diffusion, eliminating the need for complex sputtering apparatus and process control
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach provides an X-ray tube target with superior high-temperature bonding strength, reduced production costs, and environmental benefits, suitable for high-output X-ray tubes and inspection devices, while maintaining mechanical integrity under high-speed rotation.
Implementation Method 1
The joint layer comprises an MoNbTi diffusion phase
Implementation Method 2
The joint layer comprises an MoNbTi diffusion phase, an NbTi alloy phase, and a ZrNb alloy phase
Data Source
Figure 1~3
Figure 4~6
AI summary
Disclosed is a target (1) for X-ray tubes, wherein a carbon base (4) is joined to an Mo base or an Mo alloy base (2) through a joining layer (3). The joining layer (3) has an MoNbTi diffused phase (6), an NbTi alloy phase (7), an Nb-rich phase (8) and a ZrNb alloy phase (9). As a result, the target for X-ray tubes has improved joining strength at high temperatures.