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ZIRCONIUM COMPOSITIONS OF PRETREATMENT INCLUDING RARE-EARTH METAL, APPROPRIATE PROCEDURES OF METAL 发明授权

2023-01-21 3950 421K 0

专利信息

申请日期 2025-07-10 申请号 RU2014107943
公开(公告)号 RU2578287C2 公开(公告)日 2016-03-27
公开国别 RU 申请人省市代码 全国
申请人 PPG INDASTRIZ OGAJO INK
简介 FIELD : metallurgy. SUBSTANCE : claimed composition contains the rare-earth metal, zirconium compounds, electropositive metal and not over 1 ppm of unbound fluoride in terms of elementary fluoride that ensures the rare-earth metal solubility in the composition. Note here that said composition features pH of 2.9-4.4 while, in contact with the metal substrate, reacts with the substrate surface to change chemically the metal substrate surface and to be bonded with said surface so that protective ply is formed. EFFECT : formation of protective ply on metal substrate before coat application. 16 cl, 3 tbl, 2 ex


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