SINTERED COMPOSITION AND MIXTURE

摘要

PURPOSE: To obtain the subject compound having high emissivity of far infrared rays and contributing to the growth and activation of animals and vegetables by mixing two kinds of sintered materials each having respective specific Fe/Ti weight ratio and essentially free from Mn. CONSTITUTION: The 1st sintered composition is essentially free from Mn and has an Fe/Ti weight ratio of 6-17 and an Si/Fe weight ratio of 8-14. The 2nd sintered composition is essentially free from Mn and has an Fe/Ti weight ratio of 0.6-1.7 and an Si/Fe weight ratio of 15-21. The emissivity of far infrared rays of 4-5μm wavelength is >=78% for the 1st sintered composition and >=80% for the 2nd sintered composition and that of the rays of 5-16μm wavelength is >=90% for both the 1st and the 2nd compositions. The mixing ratio of the 1st and the 2nd sintered compositions is 25:75 to 75:25 and the obtained mixture has an emissivity of >=80% for far infrared rays of 4-5μm wavelength and >=90% for far infrared rays of 5-16μm wavelength. The sintered mixture has especially high emissivity for far infrared rays of 4-8μm wavelength (effective for the growth and activation of animals and vegetables).