Sintered X-ray Shielding Material for Complex Shapes

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Solution Overview

Problem

Existing X-ray shielding materials, such as those described in Patent Document 1, are difficult to manufacture in complex shapes due to poor processability and require significant time and effort to stack layers, making them inefficient for use in X-ray inspection apparatuses.

Innovation Solution

The development of an X-ray shielding material composed of a sintered body containing a metal binder with a small atomic number and metal powder with an atomic number equal to or larger than the binder, allowing for easy manufacturing and improved processability to accommodate complex shapes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a layered structure of shielding materials is used, then radiation shielding performance is improved, but manufacturing complexity and time increase

Engineering Contradiction:
Improveradiation shielding performanceVSAvoidmanufacturing complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines multiple shielding material layers into a single integrated sintered body. Instead of stacking separate metal plates and layered materials as in the prior art, the invention creates one homogeneous sintered component that achieves the same radiation shielding effect, thereby eliminating manufacturing complexity while maintaining shielding performance.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent uses composite materials by combining metal powder (having high atomic number for radiation shielding) with binder material in a sintered body. This composite structure provides both radiation shielding performance and improved processability, allowing the material to be formed into complex shapes in a single manufacturing step rather than requiring multiple layered components.

Inventive Principle:
Principle #40Composite materials

2Reliability

If metal plates with large atomic number are used, then shielding performance is improved, but weight increases

Engineering Contradiction:
Improveshielding performanceVSAvoidweight
Core Design Contradiction:
ReliabilityVSWeight of stationary object

Solution Approach 1:

The patent changes the physical and chemical parameters of the shielding material by using metal powder instead of solid metal plates, and by controlling the sintering process. This allows optimization of density and atomic number distribution within the sintered body, achieving effective shielding while reducing overall weight compared to solid metal plates.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent applies local quality by distributing metal powder particles with high atomic number throughout the sintered body matrix. Rather than using uniform thick metal plates, the high-Z metal particles are dispersed locally throughout the structure, providing shielding performance where needed while maintaining lower overall weight through the porous sintered structure.

Inventive Principle:
Principle #3Local quality

3Reliability

If traditional layered shielding materials are used, then radiation shielding is achieved, but processability and adaptability to complex shapes deteriorate

Engineering Contradiction:
Improveradiation shieldingVSAvoidprocessability
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent changes the manufacturing parameters from mechanical assembly of layered plates to a sintering process. By controlling sintering temperature, pressure, and time parameters, the material can be directly formed into complex three-dimensional shapes with integrated shielding functionality, greatly improving processability and adaptability to complex geometries.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent replaces the mechanical stacking and fastening system of layered shielding materials with a thermal-sintering process. Instead of mechanically assembling multiple components, the metal powder and binder are compacted and sintered into a unified structure, eliminating the need for mechanical assembly and enabling complex shapes that would be difficult to fabricate using traditional mechanical methods.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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 configuration results in a lightweight X-ray shielding material that maintains effective shielding performance while being easier to manufacture and more adaptable to complex shapes compared to traditional materials.

Implementation Method 1

a sintered body containing a metal binder and a metal powder of metal having an atomic number that is equal to or larger than an atomic number of the metal binder

Methodology Applied
Scientific EffectPhotoelectric absorption: Photoelectric Effect

Implementation Method 2

shields X-rays

Methodology Applied
Scientific EffectCompton scattering: Compton Scattering

Data Source

PatentUS20250079030A1X-ray shielding material, x-ray inspection apparatus including same, and method of manufacturing x-ray shielding material
Publication Date: 2025.03.06 ANRITSU CORP
  • US20250079030A1 patent drawing
  • US20250079030A1 patent drawing
  • US20250079030A1 patent drawing

AI summary

Provided are an X-ray shielding material that is lightweight, easy to be manufactured, and excellent in processability to be able to respond to a complicated shape, an X-ray inspection apparatus including the X-ray shielding material, and a method of manufacturing an X-ray shielding material. The X-ray shielding material is used for an X-ray inspection apparatus and shields X-rays. The X-ray shielding material is configured by a sintered body containing a metal binder and a metal powder of metal having an atomic number that is equal to or larger than an atomic number of the metal binder.