THERMAL SPRAY SLURRY

• Main Authors: SUGIMURA Kazuya, MASUDA Takaya
• Format: Patent
• Language: English; French; Japanese
• Published: 26.09.2019
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

Provided is a thermal spray slurry in which coagulation of thermal spray particles does not easily occur. This thermal spray slurry contains: thermal spray particles formed of ceramic; a dispersion medium in which the thermal spray particles are dispersed; and a dispersant that improves the dispersion stability of the thermal spray particles with respect to the dispersion medium. In addition, the dispersant contains: a first dispersant which is at least one among an organic acid having a molecular weight of at least 1000 or a salt thereof; and a second dispersant which is an organic acid having a molecular weight of 40 to 400. L'invention concerne une suspension épaisse de projection thermique dans laquelle la coagulation des particules de projection thermique ne se produit pas facilement. Cette suspension épaisse de projection contient : des particules de projection thermique formées de céramique ; un milieu de dispersion dans lequel les particules de projection thermique sont dispersées ; et un dispersant qui améliore la stabilité de dispersion des particules de projection thermique par rapport au milieu de dispersion. De plus, le dispersant contient : un premier dispersant qui est au moins un acide organique ayant un poids moléculaire d'au moins 1000 ou un sel de celui-ci ; et un second dispersant qui est un acide organique ayant un poids moléculaire de 40 à 400. 溶射粒子の凝集が生じにくい溶射用スラリーを提供する。溶射用スラリーは、セラミックからなる溶射粒子と、溶射粒子が分散した分散媒と、分散媒に対する溶射粒子の分散安定性を向上させる分散剤と、を含有する。そして、分散剤は、分子量が１０００以上の有機酸及びその塩の少なくとも一方である第１の分散剤と、分子量が４０以上４００以下の有機酸である第２の分散剤とを含有する。