| 摘要 |
An otherwise conventional solid Jernstedt salt composition for activating metal surfaces to improve the quality of subsequently deposited phosphate conversion coatings on the activated metal surface and which rapidly dissolves, utilizing in the composition a mixture of sodium and potassium salts, preferably condensed phosphate salts, in such amounts that the ratio of potassium to titanium is within the range from 8.0:1.0 to 40:1.0 and the ratio of potassium to sodium is within the range from 0.9:1.0 to about 2.5:1.0. |
