Method for producing iron base sintered alloys containing copper
Abstract
Abstract THIS INVENTION RELATES TO SINTERED METAL ALLOYS SUCH AS IRON BASE ALLOYS CONTAINING COPPER HAVING SIGNIFICANTLY IMPROVED TOUGHNESS CHARACTERISTICS, AND A METHOD FOR MAKING SUCH ALLOYS. A NOVEL STRUCTURE IS PRODUCED CHARACTERIZED BY A NON-HOMOGENEOUS CONCENTRATION OF COPPER SOLID SOLUTION WITHIN THE INDIVIDUAL BASE METAL PARTICLES COMPRISING SAID SINTERED STRUCTURE. SUCH A STRUCTURE IS OBTAINED BY CONTROLLING THE TIME-TEMPERATURE PARAMETERS DURING THE SINTERING AND DIFFUSING STEPS THEREOF. FOR EXAMPLE, SINTERING IS PERFORMED AT A TEMPERATURE LESS THAN THE MELTING POINT OF COPPER; THE DIFFUSION AT A TEMPERATURE RANGING FROM THE MELTING POINT OF COPPER TO LESS THAN THE MELTING POINT OF THE IRON BASE MATERIAL.
Inventors
- 👤 Takashi Kimura
- 👤 Azusa Majima
- 👤 Hiroshi Hamamoto
- 👤 Yoji Awano
Bibliographic Details
Claims Analysis
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