Mixed Metal X-ray Anode Sintered Powder Mixture Diffractometry
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Solution Overview
Problem
Current X-ray diffractometry methods require time-consuming conversions and readjustments when switching between different X-ray anode materials to utilize multiple characteristic energy lines, leading to inefficiencies and limitations in sample analysis.
Innovation Solution
Employing an energy-dispersive semiconductor detector in conjunction with a mixed metal X-ray anode, allowing for simultaneous recording of diffracted X-rays with different characteristic energy lines during an angle scan, eliminating the need for anode material changes and readjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple pure metal anodes are used for different characteristic energy lines, then measurement precision is improved, but device complexity and operational time increase due to requiring multiple X-ray tubes and conversions
Solution Approach 1:
The patent combines multiple pure metal anode materials (Cu, Co, Cr, Fe, Mo) into a single sintered powder mixture anode. This merging allows all characteristic energy lines to be generated simultaneously from one anode, eliminating the need for multiple separate X-ray tubes and reducing device complexity while maintaining measurement precision through energy-dispersive detection
Solution Approach 2:
The sintered powder mixture anode serves multiple functions simultaneously: it generates all necessary characteristic energy lines (Cu-Kα, Co-Kα, Cr-Kα, Fe-Kα, Mo-Kα) from a single component, making the X-ray tube universal for analyzing diverse samples including steels, organic substances, minerals, and alloys without requiring tube changes
2Adaptability or versatility
If X-ray tube conversion is performed to change anode material, then adaptability to different samples is improved, but productivity deteriorates due to time-consuming conversions and readjustments
Solution Approach 1:
By merging multiple anode materials into one sintered powder mixture, the system gains the adaptability of multiple tubes while eliminating the need for conversion operations, thus maintaining productivity
Solution Approach 2:
The sintered powder mixture anode is prepared in advance with all necessary metal powders (Cu, Co, Cr, Fe, Mo) already combined in specific ratios, so that all characteristic energy lines are immediately available without requiring preliminary conversion or readjustment operations when changing samples
3Manufacturing precision
If pure element metals are used for anodes, then manufacturing precision is improved by avoiding impurity reflections, but adaptability worsens due to inability to analyze samples requiring different energy lines
Solution Approach 1:
The patent uses a composite sintered powder mixture anode composed of multiple pure metal powders (Cu, Co, Cr, Fe, Mo) bound together. This composite structure maintains the purity benefits of individual metals (avoiding cross-contamination reflections) while providing the adaptability of multiple energy lines, as each metal component contributes its characteristic radiation without interfering with others
4Ease of manufacture
If alloy anodes are used, then ease of manufacture is improved, but measurement precision deteriorates due to energy discrimination limitations with scintillation counters
Solution Approach 1:
The patent replaces the traditional scintillation counter detection system with an energy-dispersive semiconductor detector. This substitution enables precise energy discrimination of the characteristic lines from the sintered powder mixture anode, maintaining measurement precision while allowing the use of the manufacturable sintered powder composite anode structure
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
Enables simultaneous measurements with multiple energies, significantly reducing operational time, expanding applicability, and simplifying operations while providing cost savings by eliminating the need for multiple X-ray tubes.
Implementation Method 1
discrete X-ray energies (mostly K-alpha radiation of the anode material) are currently used to generate interferences (reflections) on three-dimensional periodic structures on an atomic scale (crystals) according to Bragg's law
Implementation Method 2
generate interferences (reflections) on three-dimensional periodic structures on an atomic scale (crystals) according to Bragg's law. The angular position of the reflections and their intensity contain important information about the atomic and microstructure of the substances to be examined
Implementation Method 3
an energy-dispersive semiconductor detector is used to record count events from the X-rays coming from the sample
Data Source
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AI summary
The method involves changing energy-dispersive semiconductor detector for retaining of counting events from an x-ray source (3). An x-ray (6) is controlled by a sample (2) with different characteristic power lines. The x-ray is provided with mixing assembly of an x-ray anode (4). An independent claim is also included for a device for executing analysis method, where a mixing assembly of the x-ray anode has copper, cobalt, chromium, iron and molybdenum.