| 11. | In 1932 sinter metal production was started with sintering bearings.
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| 12. | Pressureless sintering is another method for processing and densifying UHTCs.
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| 13. | Spark plasma sintering is another method for the processing of UHTC materials.
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| 14. | Liquid-state sintering is required for making cemented carbide or tungsten carbide.
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| 15. | Materials for which liquid phase sintering is common are SiC, and more.
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| 16. | The process of liquid phase sintering has three stages:
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| 17. | This densification uses lower temperatures and shorter amount of time than typical sintering.
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| 18. | Sintering occurs by diffusion of atoms through the microstructure.
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| 19. | However, these factors are also the circumstances under which sintering is occurring.
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| 20. | Specific materials may also increase the rate of sintering.
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