| 摘要 |
PROBLEM TO BE SOLVED: To obtain a thermal sprayed body low in porosity, high in compressive strength and hot shear strength and excellent in thermal shock resistance by using a powdery mixture of a chamotte and a cordierite as a fire resistant oxide powder of a repairing material consisting of the fire resistant oxide powder and an easily oxidative metal powder. SOLUTION: The excellent thermal sprayed body is obtained from a thermal spraying repairing material by using the powdery mixture of the chamotte and the cordierite as the fire resistant oxide powder since the m.p. of the the cordierite is 1460 deg.C being relatively lower than the m.p. of SiO2 , Al2 O3 or MgO, and the powder is easily vitrified. The blending ratio of each component in the powdery mixture of the chamotte and the cordierite is 10-90 wt.% chamotte and 10-30 wt.% cordierite. The chamotte to be used contains 30-60 wt.% Al2 O3 preferably. |
